BITEC's APS-4T is a torch applied modified bitumen waterproofing membrane composed of carefully selected asphalts (bitumen) having superior modifying characteristics, blended with high quality polypropylene resins. It is reinforced with Spunbond Polyester fabric.

Features:

• Impermeable to water
• Low temp flexibility
• Excellent workability
• UV Resistance
• Resistant to acids And most bases
• Puncture resistant
• Excellent adhesion
• Longevity

Spunbond Polyester support, used as a reinforcement in APS4T has isotropic mechanical properties giving the composite membrane similar mechanical characteristics in all angular directions in relation to the membrane surface.

• Flexibility
• Puncture resistance
• Elasticity
• Mechanical strength
• Fatigue resistance
• Tear strength
• Deterioration resistance
• Dimensional stability

It is incorporates a patented wet talc slurry application to prevent blocking of rolls and to provide a smooth, even torching surface. Polyethylene burn-off film is contained on the torchable face of the roll. This film and embossed pattern act as a sight indicator for the applicator in determining the proper flow needed to insure adequate bonding of plies and seams. After installation of the roofing membrane is complete, the surface may be coated with a BITEC APPROVED ROOF COATING to increase the overall reflectivity of the system and/or fire rating. BITEC recommends that a period of at least 45 days elapse before roof coatings are applied. This will effectively allow the membrane to "cure" and accept the roof coating.