Lap caulk sealant used to seal the edges of a patch.
How to fix bubbles in rubber roof.
It s critical to thoroughly clean the area you re patching so the adhesive will bond with the roof.
It may be a good idea to mark the circumference of the bubble lightly with a pencil or marker and watch it closely over time to see if it gets any larger.
It may be possible to inject adhesive into the bubble with a syringe and re cement it in place by rolling it out with a hand roller.
After you ve cleaned it apply the primer let it dry and then use the adhesive sealant to attach the patch to the roof.
Causes prevention and repair as weather changes from season to season it s important to keep up with your maintenance plan to keep your roof in working order.
These bubbles of trapped air moisture can be caused by a variety of issues which are all avoidable if the roof design is correct and the membrane is correctly installed.
I suggest that you call the manufacturer of the membrane and talk to them about it if you can do so.
Usually bubbles are not associated with leaks.
Lift up one edge of a slit with a large screwdriver and apply roofing mastic under the ridge or bulge.
In some cases a contributing factor can be high pressure in the roof system.
Weight the patch until it s dry.
Use a roller to smooth the surface and remove any new air bubbles.
The adhesive is solvent based and must be allowed to gas off and become touch dry prior to bonding the membrane into position.
If this is the problem the solution is to install pressure relief vents.
Whilst bubbles or blisters on a one piece epdm roof can be unsightly they will not cause the rubber membrane to fail.
Epdm primer or glue this is used to adhere patches and flashing to rubber membrane.
A few bubbles near the edges or where there is caulking is pretty normal but it should take years for any of them to get larger if at all and the footprints would be completely unacceptable to me.
Look closely to make sure that there is only one.
With weather changes roof blisters may pop up on your commercial flat roof.
The most common cause of bubbles is the application of rubber to the deck or insulation board too soon before the adhesive is dry enough.
Contact bonding adhesive is used for bonding the rubber membrane on upstands and around the perimeter of the roof deck.
