GAF PMMA Catalyst Powder is to be mixed with GAF PMMA Resin – Summer or Winter Grade. GAF PMMA Flashing Resin – Summer & Winter Grade are designed to reinforce areas of BUR and SBS substrates that are heavily alligatored or contain numerous cracks, seams, joints, or splits.

• GAF PMMA Catalyst Powder is to be mixed with GAF PMMA Resin – Summer or Winter Grade. GAF PMMA Flashing Resin
• 10 (0.1 kg) bags per box (1.0 kg total)
• Premeasured packets for easier mixing