CAN I FIBERGLASS ONTO ASPHALT?

Posted by zccyfiberglass on June 23rd, 2016

There is no straight answer for this I’m afraid, it depends how brave you're and the way huge the asphalt roof is. sadly asphalt is hydrocarbon based mostly, and hydrocarbon is reactive to the majority things except bitumen, and bitumen hates fiberglass.

Asphalt roof – the great news is a few gray surfaced asphalt doesn’t appear to react, or reacts slowly permitting you to laminate thereto while not bleed through inhibiting the cure. I actually have seen it's in, and that i have seen it bubble once time sort of a shallow blister, and that i have detected that it should not cure departure you with a sticky mess.

You may have higher success if you are attempting to render the asphalt inert initial with G4 primer or by bonding a layer of FIBERGLASS CHOPPED STRAND MAT fiberglass matting to the asphalt initial with a skinny screed of plutonium adhesive or Fixall. I actually have solely done it myself once and it absolutely was in straight to the asphalt with G4, however the roof was solely 7m2. Since then I actually have continuously stripped the asphalt and overboarded, It ought to come back up simply as long because the previous asphalt craftsman used one soft fiber layer between the decking and asphalt. Your roof your selection.