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Question DetailsAsked on 7/4/2016

How do you repair a leaky aluminum patio roof

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2 Answers


Several ways - from most effective and permanent to least sightly and effective, roughly -

1) replace damaged panel(s)

2) take apart leaking seams, replace failed gasket or seam sealer, and reinstall

3) remove screws, if that is what is leaking, and reinstall with gasketed screws, or cheaper but less effective, inject sealer/caulk into screw hole and reinstall it - with oversized screw if no longer a tight fit.

4) for physical damage, if you can find matching roof material, small holes can also be repaired (with some visual detraction) by using seam sealer and aluminum overlay piece and pop-rivet or sheet metal screw a patch overt the hole or tear.

5) crudest, sometimes effective if leaking area is well cleaned with wire brush first, is to use caulk-gun or smear-on aluminum rool sealer. The most effective ones are generally metalized elastomeric silicone or RTV silicone sealant like Permatex 80050 but it is really pricey - about $10 for 2-4 oz tubes, $25-45 for a 10 oz tube. Probably next best are the metallized elastomerics and similar products like Geocel, with the "miracle roof sealers" which are commonly just a silver-colored acrylic latex caulk coming in last along with tapes. [Note - I am talking here about repair tapes like metallic duct tape - not the seam sealer "tape" that is pinched or compressed in the seam during installation and are part of the original materials - more properly called a seam sealer strip product. Those are fine for their use, which is as per in 2) above].

The crux of course is to find the source of the leak (usually physical damage from tree branch or hail or such), leaking screw holes, or leaking seam seals) WITHOUT damaging the roof walking/crawling around on it.

Repairmen Search the List categories if not up to DIY'ing the job - Roofers who do that type of roofing, some Awning companies, and of course if you have a good Handyman who knows metal roofing simpler repairs many can handle - but some end up smearing stuff all over the roof so you cannot find the leak anymore, but without fixing it. Commonly leaking aluminum roofs is a case of "just a dab will do it".

Answered 3 years ago by LCD


Did you ever hear the saying, "It's ALWAYS pilot error" after a plane crash? After 30 years of dealing with aluminum patio covers I can tell you it is ALMOST ALWAYS the flashing. Fixed 2 this week - one was flashing, one was the Peel and Seal tape used where the gutter attaches to the end of insulated patio cover panels.

Odds are always high that the water is getting in at the flashing because the flashing doesn't go far enough up under the shingles. The water can travel inside the hanging rail and then follow a seam down to a convenient escape point, maybe 10-20 feet from where the water got in, before it shows up as a leak.

In Northeast Texas, we can do most repairs for you.


Answered 2 months ago by Guest_9165073

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