Low Pitch Steel Roof Leak

The major issue is the low pitched valleys more that the roof itself.

Low pitch steel roof leak.

If a leak is difficult to find enlist a helper and go up on the roof with a garden hose. The piece that s going to allow us to join the panels on the lower slope and the panels on the higher slope is the pitch transition flashing or the pitch change trim. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs. As well seams are often elevated at least 2 off the surface of the roof and thus away from moisture.

This provides a weathertight seal between all the gaps. A low pitched corrugated roof with many valleys is a problem. Actually when a standing seam metal roof has a leak it is commonly at some type of flashing area. For example soak the downhill side of a chimney first then each side then the top on both sides.

On a low pitch roof an end lap can easily leak though as water will be driven back up the sheets in strong wind. Their fasteners are either concealed or screwed at the top of a ridge which makes them less likely to leak. Metal roofs can handle lower pitches anywhere from 12 on up. If these are damaged missing or applied incorrectly leaks could occur.

Failed sealant or butyl tape sealants and butyl tape are used to seal out water dirt and other debris that could compromise a metal roof. I would not contemplate trying to modify the existing roof. It s the same piece. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12.

Isolate areas when you run the hose. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. In my experience even low pitched kliplok roof with valleys are prone to leakage along the valleys. Start low soaking the area just above where the leak appears in the house.

If you look here at the lower slope roof you can see that we ve already put panel on it and installed z trim as we have been doing elsewhere on this project. Metal roofs also have seams but many manufacturers recommend connecting their panels with screws and sealant. Full length sheets should always be used where possible. Fairly steep pitch roof an end lap will not leak providing there is sufficient lap.