Waterproof roofing underlayment for sloped wooden roof

A roof underlay is a layer under the exterior roof that has a primary function of working as the shield that protects the thermal insulation material and the building structure from the effects of the weather. The roof underlay acts as a condensation barrier, which leads condensate water away from the underlay, and thereby also from the insulation material.

JianDa brand waterproof and vapor permeable membrane is polymer modified asphalt based, with surface of high strength polypropylene fiber.Back side coated with self adhesive glue or antiskid sand. Made by special process. With excellent waterproof performance and breathable properties.

USAGE

It is used as the underlayment of cement tile, painted pottery watts ,asphalt shingle and wood structure roofing . Also suitable for all kinds of architectural roofing ,walls,underground waterproof and damp proof project.

Specifications:

1.Thickness: 0.8mm-2.0mm,or according to customer's requirements.

2.Surface: Non-woven fabrics / PP / PE film / Fine sand / Self-adhesive

Customerized production is available.

Description	Specification	Width	Length	Thickness
Roof underlay	500g/m2PP—PP	1000mm	30m	0.8mm
	600g/m2S—PP	1000mm	25m	1.0mm
	1500g/m2S—S	1000mm	20m	1.3mm
Roof underlay with adhesive band	500g/m2PP—PP	1000mm	30m	0.8mm
	600g/m2S—PP	1000mm	25m	1.0mm
	1500g/m2S—S	1000mm	20m	1.3mm

Pic-(Waterproof roofing underlayment for sloped wooden roof)

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