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Category : Commercial Roofing

Ten Most Common Causes of Commercial Roof Failure

Ten Most Common Causes of Commercial Roof Failure

 

Commercial roofing is designed to be tough, but there are measures you can take to extend its lifespan. Preventative maintenance will extend the service life of your roof and protect your investment. Knowing what can cause roof failure is the best way to be proactive in roofing care. Having to replace a roof prematurely is expensive and can be prevented.

Ten Most Common Causes of Commercial Roof Failure

The roof will wear out over the years for several reasons. The environment, foliage, and climate are big factors affecting your roof. Below are the most common factors that cause your commercial roof to wear. Assessment of these factors can help you better prepare and protect your roof for the long term.

1) Exposure

Consider what weather the roof will be exposed to and if there are any pollutants. Are there any chemicals used in the area that may degrade or affect the roof? Were any chemicals used directly on the roof?

2) Structural movement

Roofs are known to expand and contract as the weather changes. This is especially common in areas that experience both hot and cold seasons. Check for defects such as blistering and cracking to identify if this has become a problem.

3) Biological growth

Does your roof have any growth such as algae or vegetation that can wear on the roof?

4) Not fixing problems promptly

When you notice problems in the roofing, do you fix them right away? Leaving them can allow the situation to get worse and more expensive to repair. It is not just the exterior roofing, you have to check the insulation for damage too. Debris collecting can also clog drains and allow for pooling water.

5) Forgetting about maintenance

The number one reason a roof needs to be replaced prematurely is a lack of regular maintenance.

6) Change in the use of the building

Is the building now used for something different? Changes in use can result in changes in condensation on the roof which impacts its longevity.  These 6 factors will wear down a roof over time, and before you know it the roof is in critical condition. In addition to these, there are 4 other culprits that can cause immediate more problems that are just as bad. What causes immediate roofing problems?

7) Extreme weather

Lightning, hail, high winds, earthquakes, snow, and heavy rain.

8) Equipment additions

Adding equipment such as HVAC units, vents, or skylights can cause problems if not installed properly.

9) Trade damage

Problems with the roofing such as punctures, tears, and holes

The Biggest Offenders

Out of all these threats to your commercial roof, the two biggest offenders are damage caused by people on the roof and obstructed drainage. Unfortunately, by trying to make improvements to a roof can lead to unintended damage. Dropping a screwdriver can leave punctures in the membrane. Improper installation of a structure on the roof’s surface can leave a building vulnerable. Both of these threats to your roof are totally avoidable. If you have recognized any of these issues that can cause deterioration or premature commercial roof failure, do not wait. You don’t want it to be too late. These factors can deteriorate your roof before you know it. Start working to prevent long term damage now. Regularly inspect your roofing, uphold a maintenance schedule, and address issues when you find them. Reach out to us if you have any concerns or questions for maintaining the longevity of your roof and investment.

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Choosing the Right Commercial Roofing System

Choosing the Right Commercial Roofing System

 

When it comes to commercial roofing, there are a lot of questions about how to get it just right.

  • What material is puncture and shrink resistant?
  • What is the right thickness?
  • Do you need strong seams to keep the weather out?
  • Black or White roof system?
  • Is single-ply roofing effective?

Choosing the Right Commercial Roofing System

Let’s take a closer look at each of these so you will know how to get the right commercial roofing for your building.

Material that is puncture and shrink-resistant

Damage to your roof will allow for a lot of heat loss during colder months. The more water gets into your roof system, the more it will damage insulation and roof protection. Depending on the type of insulation you install, this can happen quickly or slowly. For example, fiberboard insulation soaks up water easily making it more prone to damage. Polyisocyanurate insulation resists water much better, so it will take longer for roof leaks to damage the insulation. You want to have a weathertight system that does not leak during wet weather. TPO and EPDM are both reliable and puncture-resistant. These materials will withstand debris damage during bad weather and both are easy to repair.

Thickness matters

The thicker the material, the better it will be at keeping in the heat. It will also help the HVAC keep the building cool during the hotter summer. EPDM and PVC have thickness up to .90 where TPO reaches .80. It may not be a significant difference, but over the lifetime of the roof, this can add up. Most PVC roof systems are known to crack and shrink under cold weather conditions so it will not be the best choice for areas prone to extreme cold.

Strong seams will keep the weather out

A roofing system is only as secure as the seams that hold it together. A good, sturdy weld on a TPO or PVC roof system will last and won’t cause any problems by splitting under pressure. On EPDM roofing, seam tape is most typically used. This is much better and more reliable than adhesives that have been used in the past. Properly welded TO or EPDM systems will be the best and most secure roofing systems.

Black or White Roof System

There are often many questions surrounding the benefits of a white TPO or PVC roof system versus the benefits of a black EPDM roof system. It is thought that a white roof system is more effective during the warmer months when the building is being cooled. Black roof systems are better during the colder months when the building needs to stay warm inside. Also, by having proper insulation, the color of the roof system doesn’t matter. The same insulation that keeps heating and cooling inside your building also keeps heating and cooling outside your building. Investing in additional insulation is the best way to approach energy savings rather than focusing on the color of the roofing.

Single-Ply Roofing Systems

Single-ply roofing systems are the most common but not your only option. They are affordably priced and highly durable. They are typically made from TPO, PVC or EPDM. These products are much cleaner to apply than raw asphalt-based products. TPO in particular is rated as one of the best for holding up against water pooling. While TPO and PVC are primarily available in white which is great for reflecting the sun’s light and heat, you can get other colors too.

Final thoughts

No single system fits every building. Reach out to use to provide an inspection and evaluation so as to best determine the system that will work for you. Each facility will need its own roofing system, and we will help you get what works best for you and your investment.

 

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What You Should Know About PVC Roofing?

What-You-Should-Know-About-PVC-Roofing.

PVC stands for polyvinyl chloride. This is a type of plastic formed through a gaseous reaction of ethylene with oxygen and hydrochloric acid. This plasticized attributes help strengthen it as a roofing material and can help make the roof more durable and lower maintenance than similar materials. Typically, PVC is used for flat commercial roofing.

What You Should Know About PVC Roofing?

PVC for Flat Roofing

PVC comes in a membrane form and is rolled out onto the roof, then adhered to using nails or adhesive. The addition of the plastics to the membrane makes it resistant to punctures and rips and it is also chemical resistant and fairly low maintenance. PVC is also typically heat welded at the seams because seams are the weakest part of a flat roof. Welding helps to seal these areas and keep them watertight. A good PVC roof is lightweight, durable, and will last up to 20 years when properly maintained.

The biggest drawback to using PVC roofing on a flat roof is the fact that it cannot interact with asphalt materials in any way. Some flat roofs have hot asphalt applied on top of the membrane but this cannot be done with PVC roofing. Additionally, PVC roofing comes in different thicknesses. With PVC, thicker is better and often makes the roof more resistant to cracking or splitting. It is important to note that PVC does not perform well in cold conditions. Most PVC membranes can shatter in cold weather, so you will want to use a reinforced PVC membrane. This will help prevent the entire roof from shattering. Shattering can still occur, even when using reinforced PVC. But, it typically will not spread across the roof. You do not get this problem with cold weather in TPO and EPDM membranes.

PVC Repair and Maintenance

PVC formulations differ across manufacturers. This means that some PVC membranes are not compatible with other PVC membranes. You will not be able to weld them together. In some cases, if a manufacturer goes out of business or makes significant formula changes, the membrane you install today may become useless later on. PVC is also not compatible with a lot of peel and stick or self-adhered patching products. A white EPDM or TPO self-adhered patch will typically not adhere properly to a PVC membrane and is not ideal for repairs. The only way to patch a PVC roof is to weld it with compatible PVC. It is also worth considering that PVC shrinks over time, especially when thinking long term. The membrane pulls away from the surrounding walls and outlets on the roof. When welds spilt, you will end up with leaks into the building which can add up to very costly repairs down the road.

Final thoughts

Not much is known about PVC and it is not widely promoted in the roofing industry. So it is not among the popular choices for roofing. However, it has many benefits such as being lightweight, chemically impervious, and resistant to tears and punctures. As the benefits and uses of PVC become more known, you will likely start seeing more of it out there as a roofing membrane option.

 

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How to Choose the Right Roofer?

How to Choose the Right Roofer

 

Building and roofing maintenance is an important job for building managers. There is much to know when it comes to roofing to ensure it is maintained properly. Having the right roofer on hand to take care of the roof is essential. Having a reliable roofer can help you focus on the main tasks at hand and ensure the roof is well taken care of.

How to Choose the Right Roofer

There are a few important things to keep in mind. When it comes to finding the best roofer to take care of your projects.

  • Company history: You want a company that has been in the industry and the local area for a while.Someone that has a solid reputation. A well-established organization will offer quality, reliability, and have the knowledge and tools to best serve you. A solid organization is also not likely to go out of business any time soon.
  • Specific expertise: Choose a roofer that has experience with your roofing style and design. Industrial roofing is different from residential roofing and there are a number of systems out there. To get the best service, you need a contractor that knows your roofing style and materials.
  • References: Always collect references first and thoroughly check them. You can get references from other people who have used a particular roofer or through website review platforms. Knowing what previous customers have to say is important. Ask people you know and trust if there is a roofer they would recommend.
  • Consider the costs: Price will always be a factor in your final decision. With roofing, pricing is important but is not the sole factor. Overly low prices may be appealing but could indicate low-quality work. You also don’t need to go for the highest prices either. Collect estimates and choose based on price, quality, experience, and reviews. You do get what you pay for, so a higher price can mean better quality. Remember that it is about quality just as much as it is about the price.
  • Think long term: You want a roofer that you can work with for years to come. This serves the quality of your roof better. Having the same contractor means you will get reliable service.
  • Trust your instincts: Do not choose a contractor on pricing and reviews alone. Always meet with them and ask your questions directly. Trust your instincts when you talk with contractors and do not ignore the red flags. You are looking to build a relationship so make sure it is based on qualities that will last and that you are comfortable with.

 

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Impact of the Coronavirus on the Roofing Industry

COVID-19 is a global threat. It is affecting health, living, and the economy. It is also affecting the roofing industry, so contractors need to be ready.

As with the medical field, prevention is the key. As the virus spreads, employers need to take preventative measures. The number of cases is rising which means you need to be prepared. Employers must have procedures in place for their workers to maintain health and well-being. The trouble is there is not much case law to go by for guidance, as dealing with pandemics is not a common issue.

OSHA has taken initiative to remind employers of their existing standards, focusing on OSHA’s Personal Protective Equipment standards. The Bloodborne Pathogens standard does not apply to coronavirus but it can serve as a helpful framework to put standards into place. There is also an OSHA webpage that provides employers with all current information on the virus. This is to help them establish guidelines and procedures for their workplace.

The Equal Employment Opportunity Commission’s advisory is also a great resource. This features a “Pandemic Preparedness” guide for employers. One key feature is that employers have a broader scope for questioning their employees on health issues. This is normally prohibited. They can request information about travel or when employees are showing flu-like symptoms. They can request for employees to have their temperature taken and can send them home at their discretion.

These measures can only be taken however when an employer feels the employee is a direct threat. There has to be a risk of substantial harm to the health of the individual or the other employees. Employers have to be careful not to violate employee rights and these guidelines are provided. Any information gained cannot be shared and adverse actions such as termination cannot be done.

The Impact on the Supply Chain

The impact of the virus in China is impacting the world in terms of production. Global markets and supply chains are feeling the strain. Mass quarantines, curfews, and travel restrictions are crippling Chinese shipping. This is affecting the roofing industry too. Specifically, the most drastic effects can be seen in the supply of solar roofing. Production has almost come to a stop as China is where 70% of these panels are produced.

Other materials are also seeing a decline in production. Aluminum, plastic, timber, and rubber have all declined. The lack of workforce has been the driving reason. Currently, manufacturing plants in China are believed to only be operating at 30%. This will continue to hit the roofing industry until the situation improves. U.S. roofing companies can expect to begin feeling higher costs and price fluctuations, material shortages, logistics breakdowns, order cancellations, and extended delays in product fulfillment and shipping.

Ultimately, project completion will slow which affects suppliers and project managers. Roofers are advised to begin preparing for these effects now by evaluating their own supply chains from end to end to pinpoint vulnerabilities. You need to identify potential alternative supply sources, preparing for costs to soar, and making sure you have adequate provisions to protect against increased costs, supply chain delays and interruptions.

Include Force Majeure Clauses

This needs to be in your contracts. This allocates the risk of performance if performance is delayed indefinitely or stopped as a result of circumstances outside of a party’s control. It also provides notice to the parties of the types of events that would cause a project to be suspended or that would excuse performance such as coronavirus and supply issues.

The party impacted by the force majeure is protected by temporarily suspending or terminating the contract due to unexpected and unavoidable events. The event must be beyond the control of the contracting parties, it cannot be anticipated, foreseeable, or expected, and the event must be unavoidable. At this time, the coronavirus pandemic and its global economic impact are covered under this.

The following elements should be addressed in a force majeure clause:

  • What events are considered force majeure?
  • Who is responsible for suspending performance?
  • Who is allowed to invoke the clause?
  • Which contractual obligations are covered by the clause?
  • How is the inability to perform determined?

What happens if the event continues for an extended time period?

If your company already has this clause in place, it would still be wise to review those provisions to make sure they are clear. Make sure terms such as “widespread epidemic,” “pandemic,” and/or “public health emergency” are added. Since courts will interpret the clause based on the wording, these key phrases need to be included.

Price Acceleration Provisions

Contractors need to consider adding terms to their contracts to protect themselves from labor and material price increase. A price acceleration provision allows the roofing contractor to adjust the contract price to reflect the revised actual cost of the labor and materials. The price acceleration clause is usually limited to increases in materials over the course of a single project.

The contractor also needs to provide the prime contractor or owner with evidence supporting the claim for additional compensation. Price acceleration clauses also sometimes contain a termination for convenience provision. This will enable the contractor to escape a contract if the cost of materials has increased too much.

A roofing contractor may find it difficult to include a price acceleration clause in its contract with a prime contractor because both the owner and the prime contractor are looking for fixed prices initially. In this situation, the roofing contractor should consider buying and storing materials prior to construction to avoid any potential increases later on.

Requesting a deposit to purchase the requested materials is also a good idea. The subcontractor should consider requesting that the prime contractor also add a similar provision in its contract. This way the prime contractor can seek additional funds from the owner for any labor or price acceleration that occurs throughout the project.

Conscientious Bidding

Roofing contractors should also be cautious when providing firm bids for projects. Especially, if they will not begin construction for a few months. In these cases, the contractor faces additional exposure for any increases in the costs of labor and materials caused by the coronavirus pandemic. Estimating these jobs thoughtfully, and conservatively can potentially make or break a roofing contractor. Especially since the extent of the repercussions of the coronavirus on the market is not yet known.

Since there is no current vaccine for the coronavirus and the number of infected individuals continues to rise, there is no way to know when the economy will normalize. Roofing contractors need to take steps to mitigate their risks and protect themselves. As the virus remains at large, there will be impacts to the U.S. construction industry, after the shock wave from China’s supply lines spreads.

 

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Increasing the Lifespan of Your Commercial Roof

Increasing-the-Lifespan-of-Your-Commercial-Roof

Any commercial roof is susceptible to damage from the elements and natural wear and tear. With the right amount of care and attention, you can get a long lifespan out of your commercial roof. Every roof is different so depending on the materials used, the installation quality, and maintenance you will get different lifespans. To get the most out of your commercial roof follow the tips below.

Increasing the Lifespan of Your Commercial Roof

1. Material

Often budget is the only thing considered when it comes to choosing material, but this is a mistake. Remember that cheap materials will not last as long. You want to select a material that works best for your budget as well as climate, lifespan, location, and purpose. Built-up roofing is ideal for flat roofing but is not great in areas with heavy rainfall, showing that you need to consider all factors before choosing.

2. Ventilation

Having optimal airflow will help your commercial roofing remain cool during the summer and warmer in the winter. Having good ventilation can prevent moisture from collecting and seeping into the roof structure. Any moisture that gets into a roof causes mold and damage that can be expensive to repair. Mold can get into the interior of the building or the structure, causing even further damage.

3. Design

You want a roof design that compliments the type of business you have and one that can face any challenges of your location. You need to size structural members properly, consider possible penetration details, and select the right roof type. Design impacts the overall lifespan of a roof and is as important as the foundation when it comes to the structural integrity of the building.

4. Maintenance

How well you take care of your roof has a huge impact on how long it will last. Even if you have the most durable materials and the best installation, poor upkeep can destroy any roof. You should be inspecting and repairing any damage to your commercial roofing regularly, at least once a year. Small leaks can develop into serious damage so it is important to stay on top of inspections, maintenance, and repairs.

5. Lifespan

The more durable the roof is, the longer it will last. Metal roofing usually lasts the longest which is close to 50 years. Spray-foam roofing can last just as long as providing upkeep is regularly maintained. Built-up roofing lasts close to 25 years, while rubber roofing and EPDM will last between 10 and 40 years depending on upkeep. You need to remember that warranties only guarantee up to 25 years at max.

6. Warranty

Warranties are designed to cover material defects and workmanship. Make sure you always read the fine print when it comes to warranty information in order to fully protect your investment.

 

 

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The Enemies Of Commercial Roofing

Commercial-Roofing-Enemies

Just like residential roofing, commercial roofing can be easily damaged by the numerous elements that it is exposed to. The weather can weaken your roof which puts your building at risk. It is important to maintain your commercial roofing in order to prevent expensive damage and problems. Regular inspections and routine maintenance can help you spot damage before it is too late. It also helps to know what can potentially cause damage to your roof so you can be prepared.

The Enemies Of Commercial Roofing

Neglect and weather can damage your roof over time, significantly reducing its lifespan. You cannot control the weather but you can ensure you prepare your roof and regularly inspect it for damage. Understanding what can potentially damage your roof can help you be prepared and take necessary precautions to prevent these elements from destroying your roof and your investment.

  • Heat: Prolonged exposure to extreme heat and sun can cause more damage to your roof than any other factor. The heat causes expansion and contraction which stresses the seams and fasteners in your roofing. This weakens the structure of the and causes damage. If your roof has asphalt to help with waterproofing, the heat can dry this out, reducing its protection and increasing your risk for water damage.
  • Wind: High winds and storms can damage the roof. Not only can heavy winds throw objects like trees or heavy debris against the roof causing denting, cracks, and tears, but winds can rip roofing materials away. This leaves your roofing membrane exposed which is an increased risk of more serious damage.
  • Rain: Rain can cost you a lot of money, if you have not installed waterproofing and if you are not regularly performing inspections. Pooled water ages your roof quickly and causes deterioration. Water can seep through any deteriorated seams causing structural damage and internal leaks. Debris is common with rain which can collect in the drains and gutters causing clogs, Any clogs prevent water from flowing away from the roof and rainwater can pool on the surface.

Conclusion

You need to know these top commercial roofing enemies. You also need to know that they can easily be dealt with. Depending on the climate in your area, prepare your roof ahead of time. Invest in waterproofing for wet areas and sun protection where it is very sunny. With prevention and routine maintenance, you can keep your roof safe and prolong its life and value.

 

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Fire Resistant Roofing

Fire-Resistant-Roofing

 

In light of the recent devastation caused by wildfires over the last few years, the roofing industry has placed great importance on fire-resistant roofing. You should consider fire resistance when considering re-roofing options no matter where you live. Wind can sweep embers from neighborhood to neighborhood in seconds. Entire neighborhoods have been destroyed when the predominant roofing material was wood shakes, which is nothing more than a tinderbox on the roof. With the danger of wind-blown embers, fire-resistant roofing options are readily available today and you have a number of options to consider.

Fire Resistant Roofing

Metal Tiles are made of a material that does not ignite. They are made with fire-resistant barriers with a Class A protection. Most metal roofs are made of steel, copper, zinc, and alloys that are best for the dry environments and those prone to wildfires. Metal tiles are also non-corrosive and can even be designed to look like cedar shake or other more-attractive materials if you have the budget to do so. Slate is indestructible but expensive. Selective contractors have the skills to install it so you need to hire a qualified engineer or contractor to look at the load-bearing of your roofing structure before it can be installed. Slate requires braces or beams to be installed on your roof to hold the additional weight of the material on top of your building.

Concrete and Clay are common on both commercial and residential properties. Residential homes typically use clay over concrete tiles because the material is heavy, durable, and fireproof. The style can be designed to fit any architecture (Spanish, Southwest, or Mission) depending on your preference. The resistance to fire of roofing materials is based on a series of tests that are defined by a fire rating. We can help you find the right fire-resistant roofing option to match your style and budget. Roof fire ratings refer to how your roof performs in a fire on the exterior of your property. The rating is determined by a set of fire tests in a simulated fire. The three rating categories you need to know are listed below.

Class A Roofing Materials

Class A roofing can withstand severe exposure to fire and has the highest rating. It is recommended in areas where wildfires are common and include the following materials.

  • Concrete or clay roof tiles
  • Fiberglass asphalt composition
  • Shingles
  • Metal roofs

Class B Roofing Materials

Class B refers to any type of roof that can withstand moderate exposure to fire. Some areas ban the use of Class B roofing materials and blow, for safety reasons so be sure to check this with local authorities before making a roofing decision.

Class C Roofing Materials

Class C roofing materials are only able to survive light fire damage and include:

  • Wood shakes and shingles
  • Plywood
  • Particleboard

The difference between Class A and B roofing is how well they perform in the fire-resistance testing. One test measures how much a fire spreads on the tested material within 10 minutes. Class A roofs spread the fire 2 feet less than Class B roofs do as they are typically non-combustible. Class B are combustible materials that have been treated with chemicals to make them more fire retardant but these chemicals pose a risk.

Conclusion

The resistance to fire of roofing materials is rated based on a series of tests that are defined by a fire rating. If you are concerned about choosing fire-resistant materials, knowing the roof fire ratings can make all the difference. Call us today and we can discuss all the options with you so that you know exactly what materials fall under which class. We will help you find the right fire-resistant roofing to keep your building safe at a price you can afford.

 

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Is there a Connection Between Ponding Water and HVAC Units?

Is-there-a-Connection-Between-Ponding-Water-and-HVAC-Units

Having more than one HVAC unit on your roof increases your risk of ponding water. Flat commercial roofing is known for having ponding issues, especially when multiple HVAC units are positioned on the roof. Many people do not realize that the HVAC units themselves could be contributing to the ponding problem along with a lack of drainage on the flat roof. Roof top units like HVAC units, skylights, and cooling towers can cause ponding if they are not protected by crickets. Crickets are triangle-shaped structures that are designed to divert water away and without them, water can accumulate. HVAC units also regularly produce condensation which additionally should drain away but cannot if there is no cricket, this does not happen.

Is there a Connection Between Ponding Water and HVAC Units?

The weight of the HVAC unit also contributes to the problem of deck deflection. The presence of any low spots around the unit as a result of poor or aging insulation can damage the roof membrane. The structure of HVAC units can also pose as obstacles that trap debris and accumulated debris interferes with water flow into the gutters causes ponding. Rooftop HVAC units are ideal because it keeps these bulky items out of sight but with the risk of ponding water being high, there are things you should know to effectively prevent this from happening. You first need to make sure that no interior damage or structural damage has occurred before repairing any low spots. Then, make sure all gutters and downspouts are cleared of debris so water can flow without interference.

Keeping Your Roof Dry

Once the flow of water has been corrected and there is a minimal risk for ponding, you need to look for ways to prevent future ponding. The best way to avoid low spots is to fix smaller problems before they turn into larger ones. When there is any rain, be sure to schedule inspections right away to check for ponding. The sooner you find and address issues, the fewer problems you will have in the long run.

Conclusion

Having your HVAC units on the roof keeps the noisy and unsightly equipment out of the way, but they can contribute to low spots and accumulating water. Ponding water causes serious damage to the interior and exterior of your roof and building but can be prevented with proper maintenance and regular inspections. If you have a rooftop HVAC unit, be sure to inspect the surface regularly and take care of all repairs right away. Preventative care is the best way to keep your roof dry and free of ponding-related damage.

 

 

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Why Commercial Roofs Should have a Slope

commercial-sloped-roofFlat roofing is thought to be completely flat, but a slope is beneficial to these roofing systems, even if it is only small. Roofing needs slopes to prevent the accumulation of water on the surface. Ponding, or the accumulation of water, can happen anytime there is rain and without a slope to lead water away, you end up with pools. It has become more accurate to refer to commercial roofing as ‘low-sloping’, rather than flat. The pitch of a roof determines the materials you use as well as what is best in terms of building design. The ability to effectively shed water and prevent ponding is important to the longevity of any roofing system. The slope of a roof determines how well a roof will perform over time and how long it will last because preventing ponding protects the roof for longer.

The Problem with Low Spots

A low spot can cause problems and can threaten the integrity of the roof and building if ignored. There are several factors that contribute to the development of a low spot.

  • Settling of the building
  • Expansion and contraction of the roofing materials
  • Expansion and contraction of the ground beneath the building
  • Compressed or failing roofing insulation
  • Inadequate drainage that allows water to accumulate

Ponding or the collection of water happens in low spots, and the water can sit for days and even weeks. This invites mildew and mold to grow and can damage the roofing membrane the longer the water sits. Water can also penetrate through cracks causing damage to the internal structure of the roof and building. Low spots and ponding cause sagging, leaks, and serious internal and external damage.

Why do Commercial Buildings have Flat Roofs?

If low spots and ponding are common on flat roofing, then many people wonder why it is used. Flat roofing is useful despite this and they have economic value. They easily accommodate HVAC units and other bulky equipment that can take up valuable real estate and these systems are more economical to build because they reduce the overall volume of the building and save on energy costs. It is important to regularly check and maintain flat roofing to avoid low spots and ponding. With regular inspections, you can identify these problems before serious or permanent damage is caused. You also need to maintain the components such as the scuppers, gutters, downspouts, and internal drains to ensure water flow away from the roof is unhindered.

Conclusion

Adding a slope to a flat roof is an effective way to ensure proper drainage and prevent the development of low spots and ponding. Contact us today to discuss the options available for adding a slope, or repairing any low spots.

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