Product Description
Tremco® 2550 is a semi-flexible asphaltic protection board designed to safeguard waterproofing membranes during and after construction. Its core, made from a blend of asphalt, plasticizer, and inert fillers, is reinforced with two layers of asphalt-saturated fiberglass, molded under heat and pressure into durable sheets.
Key Benefits
- Durable Construction: Withstands the shock and impact of rugged backfilling operations and on-site foot traffic.
- Moisture Resistance: Low water absorption rate ensures long-term performance in damp environments.
- Versatile Application: Suitable for use on foundation walls, roof terraces, planters, and tunnels.
Best For
- Protective course for waterproofing membranes
- Foundation walls
- Roof terraces
- Planters
- Tunnels
Product Properties
| Property | Specification |
|---|---|
| Thickness | 1/8″ (3.2 mm) |
| Dimensions | 3′ x 5′ (0.91 m x 1.52 m) or 4′ x 5′ (1.22 m x 1.52 m) |
| Puncture Resistance | 200 psi |
| Water Absorption | 0.26% weight increase (after 8 hours at 60°C) |
| Water Permeability | No leakage, swelling, or deterioration (after 1 month) |
| Weight | 0.92 lb/ft² (4.49 kg/m²) |
| Density | 88 lb/ft³ (1,409 kg/m³) |
| Bitumen Content | 44.5% by weight |
| Inert Residual | 55% by weight |
| Bitumen Softening Point | 108°C |
| Alkali Resistance | No disintegration |
| Binder Tensile Strength (Width x Length) | 24 lb x 33 lb |
| Anti-Stick Material | Polyethylene film |




