Monarplan PVC Reinforced Strip for Single Ply Roofing Systems

Monarplan Reinforced Strip

Monarplan Reinforced Strip is a polyester reinforced flexible polyvinyl chloride (PVC) based membrane used to achieve a watertight detail where end laps of the Monarplan GF fleeceback membrane are butt jointed. It is also used in conjunction with coated metal drips and upstands. 

Product Availability

Product Code Description Roll Size Roll Weight
3006448 Monarplan Reinforcing Strip, Colour: Light Grey 0.15m x 15mm 5kg
3100077 Monarplan Reinforcing Strip, Colour: Anthracite 0.15m x 15mm 5kg


Product Data and Performance

Product Data
Description: Monarplan FM cut into small rolls for use at end laps with Monarplan GF Fleeceback membrane
Application: Hot air welded to the Monarplan single ply roofing membrane
Thickness: 1.5mm
Roll Size: 150mm x 15m

Light-grey-RAL7001Light grey – RAL 7001 (standard)

Anthracite-RAL7015Anthracite – RAL 7015 (standard)



PVC roof membranes are not compatible with other plastic materials; such as expanded and extruded polystyrene, and are affected by direct contact with commonly used roofing materials such as bitumen, asphalt or tar, or products containing them.


At end laps, or where there is no fleece-free selvedge, the adjacent sheets of Monarplan GF fleeceback membrane should be butt jointed. The joint is then strapped with Monarplan Reinforced Strip, centred along the joint line and hot-air welded with a minimum 40mm continuous weld on both sides of the sheet. The integrity of the weld should be checked with a seam probe as work progresses. 

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