Originally Posted by samy crawler
The garage at the house I rent has a flat roof and it started leaking the other day. Go up on the roof and one of the tar seams is split at the middle for about 24" and is the obvious problem. Water is pooling in this area when it rains.
The flat roof is constructed of about 36" wide sections of what looks like shingle material, that run the length of the building, with tar seams at the overlaps.
Landlord is super old lady that wants me to fix it. I know jack shit about roofs.
Is the wet patch stuff in a can from home cheepo good stuff? https://www.homedepot.com/p/Henry-0-...R142/100041225
or should I go elsewhere?
Will just scraping off the old tar that will come off and put a new coat down on the problem area be good enough? my youtube research tells me I should put some of that fiber mesh in between 2 layers of the wet patch. Is that really necessary for a flat roof?
Thanks for any input.
That wet patch is really for temporary purpose. 1 layer of mesh is 2 course and 2 layers is 3 course. We usually throw that stuff down for any new equipment on a roof until we can roof it in, or when we want to "tie" off a section of roof and keep it water tight till we "tie" back in with the rest of the roof, and last but not least for leak season and need a stop till we can tear that section out and fix.
That cap sheet or torch down material whatever it may be that is up there is adhered the entire back surface of that sheet...not just at the seams. What you see at the seems is it pushing out when applied and the cap broomed down.
So you can get a utility knife cut out that section, use a spud bar/big blade scraper and pull that sheet off...scrape any of the asphalt off. There is peel n stick cap sheet you can throw down, or you can get a torch and put some asphalt down and cap, or use a cold process.
Using the mesh and mastic at the seam might save ya a little time but if it's pooling up that's more the issue. You'll end up patching all over that roof at some point.
You can roof right over that as well but again I'd be more concerned on what and why it's pooling up.
If she will foot the bill a whole tear off and new roof would be best or like mentioned go metal roof over existing cap sheet roof.