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Cavity Wall Insulation

Cavity Wall Insulation
Cavity Wall Insulation
Cavity Wall Insulation
Cavity Wall Insulation
Cavity Wall Insulation
Bestseller
Cavity Wall Insulation
Cavity Wall Insulation
Cavity Wall Insulation
Cavity Wall Insulation
Cavity Wall Insulation
Cavity Wall Insulation
£4.22
  • Stock: In Stock
  • Model: WCWIV
  • MPN: WCWIV

Available Options

The thermo-efficient qualities of Custompac polystyrene bead make it a versatile wall cavity insulation material. 

For the safety of our customers, our standard bead polystyrene cavity wall insulation is manufactured with a Flame Retardant additive and tested to BS 5852: 1982 Part 2.

All prices include free P&P to Mainland UK (excluding highlands & islands). 

Quantities Available (Cubic feet/Litres): 

1CF/28Ltrs, 2CF/57Ltr, 3CF/85Ltr, 4CF/113Ltr, 5CF/142Ltr, 6CF/170Ltr, 7CF/198Ltr, 8CF/227ltr, 9CF/255tr, 10CF/283Ltr 

Approx bead size (inches/mm): 0.2"/5mm
 
IMPORTANT DELIVERY INFORMATION FOR 3CF AND ABOVE:
 
Please contact us if you live in the following areas as an additional surcharge is required for delivery to the following postcodes:
 
Scottish Highlands - AB36-38, AB55-56, FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40, PH19-26, PH30-41, PH49-50
 
Scottish Islands - 2-5 day delivery
Scottish Islands - HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3

80CF - Shipped to mainland UK only - excluding Highlands and Islands


 

EPS Insulation Fire Testing

In April 2018, tests to the EN 13823 and EN 11925-2 standards were carried out by material testing experts Exova Warringtonfire, to determine the classification of our Expanded Polystyrene Insulation (FRA).

(This covers both our sheet insulation and loose-fill cavity wall insulation.)


Samples of different depths of expanded polystyrene containing flame retardant additive were tested, achieving the following result: Euroclass C-s1-d0* (on depths of 20mm-200mm)

Fire Testing in action, in Exova's laboratory:


Click HERE and HERE to view the Fire Test Reports in full.


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Polystyrene Insulation Guidance

Care must be taken when installing PVC cables, to ensure that they do not come into contact with polystyrene insulation.

A chemical reaction takes place between the PVC sheath and the polystyrene, resulting in a migration of polymers with the cable, known as 'marring'.

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