North West Timber Treatments Ltd.

50mm Isowool Cavity Wall Slab

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Product code IISOCS50PK
  • Was £35.00
  • Now £27.45
  • Now £32.94
£7.55 discount
Valid until 01/06/2022

Isowool CWS is designed to be installed during construction in the cavity between two masonry leaves in external walls.

The slabs can be used either to fully fill the cavity, or alternatively as a partial cavity fill when held against the outer face of the inner leaf in conjunction with a minimum 25mm residual cavity.

Isowool CWS is a non-combustible, silicone-impregnated glass mineral wool slab. Supplied in 1200 x 455mm slabs.

If you require further information on our Isowool Cavity Wall Slab give sales a call on 01942 720777 or email us on

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