Reinforced Polythene Building Membranes
Heavy duty reinforced polythene DPM

Grade 880 is suitable for use as a damp-proof membrane in floor constructions. It can be installed over or under concrete ground floor slabs with or without insulation. It can also be used for remedial work and with timber or concrete suspended floors.

Construction

Grade 880 is a multilayer composite membrane with polythene for toughness and water resistance and a woven polypropylene reinforcement for high tear resistance. Grade 880 is a flexible sheet material with a smooth surface and a regular grid-pattern surface texture. It is transparent, blue tinted for easy on-site identification.

Technical Data

Basis Weight (g/m2)		291 g
Tensile Strength	-MD	7.3 kN/m
	-CD	7.3 kN/m
Nail Tear Resistance	-MD	112 N
	-CD	126 N
Vapour Resistance		420 MNs/g

Fixing/Sitework

Store rolls on sides under cover until needed. Cover entire site with membrane, overlapping joints 100mm and sealing with a suitable butyl double-sided adhesive tape. Seal around all services through the membrane with a suitable tape, or use "top hat" seals. Carry edges of membrane under DPC of external walls. Repair or replace any damaged areas before covering with concrete.

Availability

Standard Roll Size	2000mm x 50m
Roll Weight	29kg

All information given in good faith and is believed to be accurate. Technical data is based on laboratory testing and represents average values. Specific lots may vary above or below these values.