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

Features:

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

Spunbond Polyester support, used as a reinforcement in APM4T has isotropic mechanical properties giving the composite membrane similar mechanical characteristics in all angular directions in relation to the membrane surface.

The Spunbond Polyester fabric imparts the following properties to the composite membrane:

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

This product incorporates a smooth and even application of polyethylene film to prevent blocking of rolls and to provide a smooth, acceptable torching surface. Polyethylene burn-off film is contained on the torchable face of the roll. The polyethylene burnoff film acts as a sight indicator for the applicator in determining the proper flow needed to insure adequate bonding of plies and seams.