I am a carpenter with some roofing experience. I need to correct a slow leak on a flat roof that seems to be caused by the fact that there is standing water on the roof. Most of the roof is in great shape except for an area of about 3 square feet right by the outlet that dips significantly and had water about 1 1/2″ deep at the deepest point. Is there any material that I could apply to to existing roof surface to take out this dip? I realise that this is not the ideal solution but I am working for a friend and to reduce costs I am trying to avoid cutting away the roof coating and correcting the decking below, if and only if a cheaper solution doesn’t have the potential for greater problems down the road.
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Replies
A 1-1/2" sag in what - maybe 6-7' is not an insignificant minor problem in a flat roof. It makes it sound likemajor structural work and repair is needed below.
Usually something like this, when you add the weight of fill and patch above, it just causes it to sag further and make the problem worse.
to give any more advise than that, I would need to know what kind of roof material it is and how long it has been leaking.
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yes--there may be a product for this
go to a good roofing supply house--not a lumberyard.
they will have something----comes in a BIG caulk tube------"pourable sealant"
comes in caulktube-----put kind of pours out like thick paint------they make it runny-----so it is self leveling.
it's like a quart tube--kind of pricey--maybe $30 a tube---and it sounds like you will need 4 or 5 of them anyway. material is grey colored-----takes i think about a day or so to cure.
i forget the brand name but i have seen it at at least 2 local suppliers.
i have used it twice on roofs with good results---and once i used it to seal a HUGE ceramic flower pot my wife turned into a water feature in our garden with lilly pads, fish, fountain pumps etc.
it might not be the BEST solution---but it should work. stuff is made to seal around conduit and wire curb penatrations on rubber roofs.
stephen