Polyfoam System Closer
Product Description
For the closing of masonry wall cavities
Description Polyfoam
System Closer comprises Polyfoam high performance, 100% ozone friendly, extruded polystyrene, rigid board insulation semi-enclosed in a rigid PVC casing. Polyfoam System Closer is available in sizes to suit specific cavity widths from 50mm to 100mm.
Application
Polyfoam System Closer is used between the inner and outer leafs of masonry cavity walls at openings, it:
- provides a thermal and waterproofing break between the inner and outer leafs that complies with the England and Wales Building Regulations
- can be either built into a new construction or retro-fitted as an upgrading measure
- is a bespoke cavity size, supplied to fit the intended cavity
- can be used in any masonry wall cavity application
- can be jointed simply to reduce waste
Polyfoam System Closer is recommended for the following wall constructions:
- Partial Fill Cavity Walls in refurbishment and new build
- Full fill cavity walls in refurbishment and new build
Performance
Moisture resistance
Polyfoam System Closer provides a damp proof barrier between the outer and inner leafs. The casing and the Polyfoam core are both highly moisture resistant. The casing has a flexible strip attached to fit into the rear of door and window frames to act as an extra damp proof seal.
Thermal insulation
Polyfoam System Closer utilises a high performance insulant, with aged quoted thermal performance values which is virtually unaffected by moisture on site. It easily complies with the thermal requirements for cavity closers in the England and Wales Building Regulations for preventing thermal bridging at openings.
Fire Performance
Polyfoam System Closer contains a flame retardant to inhibit localised ignition. When contained within a cavity wall behind a plaster or similar finish it will not prejudice the fire resistance of the wall.
Handling and storage
Polyfoam System Closer is supplied in polythene packs, labelled with identifying product and manufacturing data. The lengths are easy to handle and non-irritant, no special protective clothing is required to install them. Polyfoam products should not be left exposed to prolonged sunlight as this will result in surface degradation. Where outside storage for extended periods is required cover with opaque/light coloured sheeting. Ensure they are not stored close to open flame or other ignition source, also avoiding volatile compounds and chemicals such as solvents.
Polyfoam System-Closer has a Moisture Absorption by Volume of 0.20% and Continuous Service Temperature Limits of -50°C to +75°C.
Polyfoam System Closer:Nominal Density 30kg/m3, Minimum Compressive Strength 200kPa
Product Literature