



GAF Tri-Ply #75 Base Sheet Roll Roofing, 3.3-ft x 97.5-ft, 300-sq ft Coverage
GAF Tri-Ply #75 Base Sheet Roll
A premium base sheet for low-slope roofing systems, built on a strong glass mat coated on both sides to resist asphalt bleed-through. Designed for cold-applied, hot-asphalt, or mechanically attached installations, it offers high tensile strength for crack and split resistance.
Key Features:
- Versatile Application: Install with cold asphalt adhesive, hot asphalt, or mechanical fasteners in all climates
- Durable Glass Mat: Closed-sheet design helps prevent asphalt bleed-through and promotes long-term performance
- High Strength: Excellent tensile strength for superior nail-holding and resistance to splitting/cracking
- Flexible Use: Functions as a base or interply membrane in BUR systems
- Tested & Approved: Meets ASTM D4601 Type II; FM Approved; Miami-Dade and UL classified for Class A assemblies
Specifications Table:
| Specification | Details |
|---|---|
| Series Name | Tri-Ply #75 Base Sheet |
| Type | Roll roofing |
| Color/Finish Family | Black |
| Manufacturer Color/Finish | Black |
| Coverage Area | 300 sq ft |
| Length | 97.5 ft |
| Width | 3.3 ft |
| Underlayment Required | Yes |
| Water Resistant | Yes |
| Waterproof | No |
| Warranty | 10-year limited |
| Meets Standards | ASTM D4601 Type II |
| Approvals | FM Approved; Miami-Dade County Product Control Approved; UL classified to ANSI/UL 790 (Class A assemblies) |
Frequently Asked Questions (FAQ):
Q: What size area does one roll cover?
A: Each roll covers approximately 300 sq ft (3.3 ft W x 97.5 ft L).
Q: Is this waterproof by itself?
A: It is water resistant but not waterproof on its own; use as part of a complete low-slope roofing system.
Q: How can it be installed?
A: It can be cold-applied with asphalt adhesive, hot-asphalt applied, or mechanically attached.
Q: Can it be used as an interply layer?
A: Yes, it can serve as either a base sheet or an interply membrane.
Q: Does it carry a warranty?
A: Yes, it has a 10-year limited warranty; see manufacturer for details.
Structured strength for streamlined rooftops
This base sheet lays a refined foundation, giving low-slope roofs a clean, confident start. The robust glass mat core is the quiet hero—sleek, strong, and impeccably composed. Pair it with complementary ply and cap sheets to create a cohesive, high-performance silhouette. It’s an essential layer for a polished, enduring roofscape.
Build a stronger low-slope roof—add the Tri-Ply #75 Base Sheet to your project today.
Original: $65.64
-70%$65.64
$19.69Product Information
Product Information
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Description
GAF Tri-Ply #75 Base Sheet Roll
A premium base sheet for low-slope roofing systems, built on a strong glass mat coated on both sides to resist asphalt bleed-through. Designed for cold-applied, hot-asphalt, or mechanically attached installations, it offers high tensile strength for crack and split resistance.
Key Features:
- Versatile Application: Install with cold asphalt adhesive, hot asphalt, or mechanical fasteners in all climates
- Durable Glass Mat: Closed-sheet design helps prevent asphalt bleed-through and promotes long-term performance
- High Strength: Excellent tensile strength for superior nail-holding and resistance to splitting/cracking
- Flexible Use: Functions as a base or interply membrane in BUR systems
- Tested & Approved: Meets ASTM D4601 Type II; FM Approved; Miami-Dade and UL classified for Class A assemblies
Specifications Table:
| Specification | Details |
|---|---|
| Series Name | Tri-Ply #75 Base Sheet |
| Type | Roll roofing |
| Color/Finish Family | Black |
| Manufacturer Color/Finish | Black |
| Coverage Area | 300 sq ft |
| Length | 97.5 ft |
| Width | 3.3 ft |
| Underlayment Required | Yes |
| Water Resistant | Yes |
| Waterproof | No |
| Warranty | 10-year limited |
| Meets Standards | ASTM D4601 Type II |
| Approvals | FM Approved; Miami-Dade County Product Control Approved; UL classified to ANSI/UL 790 (Class A assemblies) |
Frequently Asked Questions (FAQ):
Q: What size area does one roll cover?
A: Each roll covers approximately 300 sq ft (3.3 ft W x 97.5 ft L).
Q: Is this waterproof by itself?
A: It is water resistant but not waterproof on its own; use as part of a complete low-slope roofing system.
Q: How can it be installed?
A: It can be cold-applied with asphalt adhesive, hot-asphalt applied, or mechanically attached.
Q: Can it be used as an interply layer?
A: Yes, it can serve as either a base sheet or an interply membrane.
Q: Does it carry a warranty?
A: Yes, it has a 10-year limited warranty; see manufacturer for details.
Structured strength for streamlined rooftops
This base sheet lays a refined foundation, giving low-slope roofs a clean, confident start. The robust glass mat core is the quiet hero—sleek, strong, and impeccably composed. Pair it with complementary ply and cap sheets to create a cohesive, high-performance silhouette. It’s an essential layer for a polished, enduring roofscape.
Build a stronger low-slope roof—add the Tri-Ply #75 Base Sheet to your project today.






















