Perhaps the most common reason is water damage to the substrate or insulated board stock.
Ponding water on rolled roofing porch.
Roofslope is a simple to install cost effective solution to correct ponding water areas.
Starkweather roofing uses roofslope frequently as an alternative to installing crickets adding drains or widening scuppers.
If water remains on the roof system after 48 hours consider it an issue that could lead to larger problems requiring costly repairs.
Dry the puddled water with old rags or towels and allow the roof exterior to completely air dry.
The basic theory is that you will build up layers of rolled asphalt roofing to fill in the depression.
Crushed insulation causing low spots.
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.
3 use the utility knife to cut a 12 inch diameter circular patch out of the rolled asphalt roofing.
To resolve ponding before it damages the roof determine the cause of the ponding and select the appropriate solution.
Water ponding on the roof will eventually saturate the wood promoting fungal decay and intrusion by insects and leading to leaks.
One way is to use layers of rolled asphalt roofing.
The extra layer of plywood is omitted and a granulated asphalt material goes down directly on top.
Ponding or standing water can occur from insufficient drainage or a number of other reasons.
Persistent leaks can cause these materials to eventually break down or settle creating a place where water can accumulate into stagnate pools.
Use rags or towels to remove any moisture.