Garland's Modified Bitumen Membranes Provide Unmatched Roofing Protection

Garland manufactures some of the strongest, toughest modified bitumen membranes available in the roofing industry. By developing unique combinations of polymers, such as SBS, SIS, and SEBS, we have continuously extended the service life of our modified bitumen systems. The use of superior polymers along with high-strength reinforcements ensures customers receive the maximum life-cycle return on their capital roofing investment.

StressPly® Evolution

Product Description

StressPly Evolution is an elastomeric modified bitumen waterproofing membrane manufactured in a superior calendaring process by saturating and coating a polyester carrier with a waterproofing compound made from special grade of modified bitumen with SBS elastomers and fillers. The SBS modifiers boost the thermal, mechanical and aging characteristics of the membrane compound; the non-woven spun-bond polyester carrier reinforcement provides the membrane with its excellent tensile strength, tear/puncture resistance and elongation properties. StressPly Evolution upper surface is finished with mineral slate, while the lower face is laminated with polyethylene film.

Product Advantages

  • Contains pre and post-consumer recycled content
  • Styrene-Butadiene-Styrene (SBS) rubber
  • Superior tensile and tear strength
  • Security in multi-ply construction
  • Excellent Chemical and Bacteria Resistance
  • Factory-applied mineral surfacing


Grey Mineral

Technical Data

Technical DataStressPly Evolution
Tensile Strength1040 / 480 N/50mm
Length6 m
Width1 m
Nominal Thickness4 mm
Low Temp. Flexibility-12?C

Approvals and Certifications


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