Roof coating blisters in areas of adequate drainage are usually coming from below.
How to repair foam roof blisters.
Foam roofs get bubbles and blisters sometimes and need to be repaired.
Should it be determined that blister removal is necessary the following steps should be followed.
Foam roofs take a beating from our phoenix sun.
To promote thorough adhesion of a patch it is essential to begin by preparing the surface.
Foam blisters fix it or leave it.
If the membrane surface has been flood coated and aggregate embedded carefully spud.
Most foam roof repair kits come with the necessary tools and materials.
What to watch for roof coating blisters in ponding water areas are due to moisture permeation from above.
Repair in there is heavy traffic.
Moisture trapped in spray down foam due to deterioration or loss of protective coating.
In this first picture it identifys a golf ball size blister.
With proper care and repair your foam roof can virtually last forever.
Inspect the damaged area for any moisture and continue cutting away damaged foam until only strong and dry foam remains.
If you have a large area that needs patching you may want to see if the foam can be purchased separately.
The polyurethane will need to cure before you seal the repair.
Type c typically left in place.
Make sure you cure the cause type b blisters.
Cut the blister out using a razor knife bread knifes work the best.
This is a quick video showing you how do repair the foam bubbles and blisters on your flat roof.
If there is traffic on the roof fix it.
Take a look at the kit to see how many square feet it will cover in a repair.
Step 2 get onto the roof.
No traffic you may want to leave it.
Type d typically left in place.
Use your polyurethane caulk to fill in the opening where the blister was removed.
Use a putty knife to pry up the blister.
Proper installation install the insulation board snugly to substrate clean the work area of dust and other contaminants allow proper ventilation for the new roof system.