A concern with all roofing is leaks, and this includes metal roofing too. Even with proper installation, there is still a risk for leaking. Metal is prone to expansion during temperature swings. There are also flashings and other fixtures that move in different directions and mechanical seams can get out of alignment, causing seams to be inefficient. All of these complications can create avenues for water to get into the roof.
Lasting Solutions for Metal Roof Leaks
Should this happen, there are remedies to help the situation. Sealants and tape are both designed to repair leaks in metal roofing. Sealants are better for areas or gaps where fasteners have loosened. These often back out of formation with the expansion and contraction of metal. It is also common to find missing or loose heads. Simply remove the screws, insert a new washer and fastener and cover with a sealant.
Sealants and Tapes
The best sealant for metal roofing is a high-solids polyether or silicone sealant. They are pigmented to match the coloring of popular roof colors. These materials both adhere well to metal and are ultraviolet stable with great weathering properties. Silicone is a better choice for higher temperatures. Roofing tapes are equally effective. Leaks can form on lower slope metal roofing along the seams. Watertight roof tape is a great solution for these gaps. Using a tape of thickness 30-mil is easy to install and effective. Hold one edge of the roll while another worker walks along the seam with the roll. Adhere to the tape, pulling the backing off as you go. Tape with a polyester scrim will be best in terms of flexibility as you will likely need to make turns as you apply it to the roof. Any area that is to be taped needs to be properly prepared for the best application. Brush away and remove all dirt and oil residue. Use rubbing alcohol to clean the area thoroughly. Once the tape is in position, it needs to be set with a roller as pressure will activate the adhesive. The final step is to outlook around the edges for loose spots and voids. You also need to apply a coating after the tape is in place.
Gutters and Water
Roof tape is also good for repairing gutters, especially in joints and corners. The first step is to clean the gutter thoroughly and then applying the tape is the same as with the roof. Flexible roofing tape is best for seams but you want to get a thicker tape for gutters. This eliminates the need to apply a coating after tape application.
Every roof has a risk of leaking over time. With metal roofing, there are easy and effective solutions to help stop leaks from damaging your roof. With regular inspection and maintenance, you can identify potential problem areas before leaks can cause serious damage. With sealants and tapes, you can make sure your roof lasts.