Seal A Flat Roof Seam Leak

Leaks in wooden roofs are commonly caused by a gap between the panels which move during expansion and contraction.

Seal a flat roof seam leak.

Use the trowel and place some of the roofing cement over the area and spread it out six inches beyond the spot to repair. Next it s time to. Isolate areas when you run the hose. Use those measurements on the rooftop to create a starting point for your search.

If you want extra protection it is also possible to apply a piece of this liquid rubber seam tape and then put another type of coating on top to ensure it stays on. Applying two coats of elastomeric coating protects the roof from water and also insulates the material preventing loss of heat from inside the building. Identify the location of the leak. It is imperative to fill the exposed membrane.

Most flat roofs are very slightly sloped to facilitate runoff so explore from the point of the water s entrance up the. For example soak the downhill side of a chimney first then each side then the top on both sides. Start low soaking the area just above where the leak appears in the house. Water cannot slide off flat roofs like sloped roofs but a simple solution exists to resolve this problem.

From inside measure the distance from where the leak is visible to the two nearest walls. Be sure to check any areas where the roof comes to a juncture or where there are any added items such as exhaust pipes. If a leak is difficult to find enlist a helper and go up on the roof with a garden hose. This can be done by pouring a small amount of water over the area you suspect the hole in your roof is located and checking for the leak underneath.

Clean and dry the area you wish to apply flex seal. Step 2 fill a caulking gun with a watertight polyurethane or oil based sealant and hold it at an angle to insert the product directly into the gap. This is a great product for preventing leaks on a variety of different surfaces and it s suitable for flat roofs trailers mobile homes gutters foundations ponds basements and rv roofs. Waterproofing protects flat roofs when runoff cannot occur.

If you have found issues with the flat roof then you need to repair them prior to applying flat roof sealant over the entire roof. Do a small area at a time to really pinpoint the cause of the leak.