Free Click & Collect In 1 Hour From New Southgate Store | Free Delivery Over £500 inc VAT
Free Click & Collect In 1 Hour From New Southgate Store

100mm Rockwool Thermal Insulation Cavity Batt 1200mm x 455mm (3.28m²)


100mm Rockwool Thermal Insulation Cavity Batt 1200mm x 455mm (3.28m²)

In stock
Click & Collect
£38.09 Inc VAT
£11.62 Per M²

Cavity insulation is essential to provide weather-tight protection against inclement weather. The potential for damage caused by moisture can compromise insulation performance, so the ROCKWOOL Full Fill Cavity Batts provide a great, water resistant solution for new build or extension projects.

66 In Stock
New Southgate
48 in stock
Park Royal
0 in stock
Staples Corner
86 in stock
West Hampstead
4 in stock

Product Information

Rockwool Thermal Cavity full fill insulation is reliable, non-combustible and contains water repellent additives that prevent water from passing through to the inner leaf of new build external masonry cavity walls. The lightweight batts are produced from highly sustainable volcanic rock, helping to keep the planet healthy, occupants warm and energy bills low.

Key Features

  • BBA certified for all exposure zones
  • Acts as a cavity barrier
  • Water repellent
  • Outstanding thermal and fire insulation
  • Superior fit against block work

Rockwool Cavity has been examined by the British Board of Agreement (BBA) and granted Certificate 94/3079 for use in all exposure zones for buildings that are up to 12m in height, as well as for buildings that are over 12m, and up to 25m, in height in zones where the exposure factor does not exceed 120. To comply with the requirements of the BBA Certificate, and ensure trouble free performance, masonry walls must be built in accordance with BS EN 1996-1-2-3 and workmanship on site must comply with BS 8000: Part 3: 1989. Rockwool Cavity conforms to BS EN 13162:2008 Specification for factory-made mineral wool products.
Approved Doc 'B' (E+W) Technical Booklet E (NI). Building Standards Section 2 (Scotland). Resistance to fire spread between and within cavities. Rockwool Thermal Cavity is non-combustible and therefore suitable for use in buildings of every purpose group. It also acts as an effective cavity barrier when tightly fitted between masonry leaves where an insulated wall connects with an un-insulated wall cavity. Fire classification Rockwool Cavity achieves a reaction to fire classification of A1 as defined in EN 13501-1.
Approved Doc 'C' (E+W) Technical Booklet C (NI) . Building Standards Section 3 (Scotland). Rockwool Cavity does not absorb water by capillary action and may therefore be used in situations where they bridge the damp proof course. (See Section 8.1 of the BBA certificate). The orientation of the water repellent fibres prevent water crossing the wall construction provided that the batts are correctly installed and sound building techniques are applied to the cavity wall construction (see installation notes). Any water penetrating the outer leaf will drain down the surface of the batts.
Rockwool Cavity has a thermal conductivity (K value) of 0.037W/mK. Approved Document L (2010 edition) U-value. Requirements

Product Specifications

Technical Specification
Brand: Rockwool
MPN: TDCAV100/450
Pack Size: 6
Size: 455mm x 1200mm x 100m

  • Lead time of 2-3 Working Days
  • This product is dispatched from Builder Depot and is available for in-store purchase.
  • This product will usually be delivered via third party courier.
  • Orders received by 11:00am are processed the same working day.
  • Your delivery charge will be displayed in the trolley page and checkout prior to purchase.
  • Once the order has been dispatched you will be sent relevant tracking information.
  • This item is eligible for returns as per our Returns Policy.
  • The products ordered are for kerbside delivery only, for more information please see our Delivery page.