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GAF MajorSeal Liquid Flashing 4-Pouch Pack, Matrix 202 Membrane System
Regular price $88.40Orders start at $399 — combine any items to reach the minimum. Learn more
GAF MajorSeal Liquid Flashing 4-Pouch Pack, Matrix 202 Membrane System
GAF MajorSeal Liquid Flashing is a liquid-applied flashing for GAF Matrix commercial roofing systems, sold here as a 4-pouch pack. Use it to flash details, penetrations, and terminations where sheet flashing is impractical. Complies with CARB, SCAQMD, and OTC VOC requirements and is tested per ASTM D 2369 and EPA Method 24.
Key Features:
- Liquid-applied flashing: Liquid flashing for detailing GAF commercial roofing systems where sheet flashing is impractical.
- 4-pouch pack: One order unit contains 4 pouches of material.
- Low VOC: Meets CARB, SCAQMD, and OTC VOC requirements.
- Tested to standards: Tested per ASTM D 2369 and EPA Method 24.
- Matrix system: Part of the GAF Matrix commercial accessories lineup.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | GAF |
| Manufacturer model | 4251 |
| Sell unit | 1 pack of 4 pouches |
| Product line | MajorSeal Liquid Flashing (GAF Matrix) |
| Pack quantity | 4 pouches per pack |
| Approvals | CARB; SCAQMD; ASTM D 2369; EPA Method 24; OTC |
| Intended use | Liquid flashing details in commercial roofing applications |
| Weight | 10 lb per pack (item weight) |
Coverage & How Much You Need:
Coverage depends on the detail geometry and applied film thickness specified by GAF for MajorSeal; size the job from the GAF MajorSeal product data sheet, not from a fixed per-pouch rate.
Fit and Compatibility:
Intended for use within GAF commercial roofing systems; confirm substrate and membrane compatibility with the GAF Matrix/MajorSeal specifications. Primer and reinforcing fabric may be specified by the GAF detail and are sold separately.
Frequently Asked Questions (FAQ):
Q: How many pouches come in a pack?
A: 4 pouches per pack; 4 pouches are also per carton, so one pack equals one carton.
Q: What is MajorSeal used for?
A: Liquid-applied flashing for roofing details, penetrations, and terminations in GAF commercial roofing systems.
Q: Is it low VOC?
A: Yes, it is listed as compliant with CARB, SCAQMD, and OTC VOC requirements.
Q: How much area does one pack cover?
A: Coverage depends on the specified thickness and detail; consult the GAF MajorSeal product data sheet for coverage rates.
Q: Does it need reinforcement?
A: Follow the specific GAF detail for the assembly; some details call for reinforcing fabric or primer, sold separately.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Liquid flashing saves time on complex penetrations, scuppers, and irregular details where cutting and welding sheet flashing is slow; however, quality depends on strict surface prep and the film thickness GAF specifies. Apply within the pot life and environmental window given on the GAF data sheet. Use within a GAF commercial system specification if a guarantee is involved.
Follow the GAF safety data sheet for ventilation, skin protection, and solvent-handling precautions when applying liquid flashing.
Order the GAF MajorSeal Liquid Flashing 4-pouch pack for your commercial roofing details.
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