Tremco® 2550

A semi-flexible asphaltic sheet protection board. It consists of a core made from a blend of asphalt, plasticizer, and inert fillers. This core is sandwiched between two skins of and asphalt-saturated fiberglass. This composition is then molded and formed under head and pressure into sheets.

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