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ROCKWOOL® Full Fill Cavity Batts

Verified by manufacturer 1 month ago

50 mm

ROCKWOOL Ltd Variant:

Full-fill stone wool insulation for masonry cavity walls.

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Application

Full fill insulation for masonry cavity walls.

Description

ROCKWOOL® Full Fill Cavity Batts are a stone wool insulation solution for masonry cavity walls, suitable for use in new builds and extensions. Lightweight and easy to handle, the batts are simple to install and provide a close fit against brick and blockwork. ROCKWOOL Full Fill Cavity Batts are non-combustible and contain water repellent additives which prevent moisture transmission between the outer and inner leaf.

 The NHBC accepts the use of ROCKWOOL Cavity Batts, other than in very severe exposure locations with fairfaced masonry, provided it is installed, used and maintained in accordance with the BBA Certificate, in relation to NHBC Standards, Chapter 6.1, External masonry walls. Building standards have also recognised that where party cavity-walls between connected buildings are untreated, considerable heat can escape through them. Using ROCKWOOL Cavity Batt to fully fill the party wall will reduce the u-value to 0.00 W/m2K.


Features and benefits:

  • Euroclass A1 non-combustible.
  • Water repellent - prevents water transmission from outer to inner leaf.
  • Acts as a cavity barrier - no additional TCBs required.
  • Close fit against blockwork.
  • Dimensionally stable and robust - preventing slumping and sagging.
  • CE marked to BS EN 13162:2012+A1:2015 • BBA certified (BBA certificate number 94/3079).


Water resistance and moisture:

The product will resist the transfer of water across the cavity. The orientation of the water repellent fibres prevent water crossing the wall construction, provided 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.


Condensation:

Will contribute to limiting the risk of condensation.


Durability:

ROCKWOOL stone wool is highly resilient, durable and dimensionally stable, maintaining its thickness and shape over time. Moreover due to its fibre structure and overall flexibility, stone wool can easily fit into available spaces, helping in avoiding unplanned air gaps, cracks or other installation errors in the final construction, ensuring stable performance over time.


U-Values:

  • Approved Document L (2013 edition England and 2014 Wales) – U-value requirements for walls:
  • New build dwellings: England 0.25-0.18 W/m²K / Wales 0.21-0.18 W/m²K.
  • New build non-domestic: England 0.26-0.22 W/m²K / Wales 0.26-0.22 W/m²K.
  • Extensions to dwelling: England 0.28 W/m²K / Wales 0.21 W/m²K.
  • Extensions to non-domestic: England 0.28 W/m²K / Wales 0.26 W/m²K.

General information

Material

Mineral wool

Shape

Rectangle

Length

1200 mm

Width

455 mm

Height

50 mm

75 mm

80 mm

100 mm

150 mm

Uniclass

Pr_25_57_06_50 Mineral fibre slab insulationPrimary

CAWS

F30/10 Full fill cavity insulation

F30/150 Full fill cavity insulation

Specification data - Mineral fibre slab insulation

General requirements

Insulation products generally.

Standard

To BS EN 13162; BS 6676-1; ISO 14001.

Guidance for specification option:

 Manufactured to BS EN 13162 and conforming with BS 6676-1.

Thermal conductivity (maximum)

0.037 W/m·K.

Thickness (minimum)

50 mm.

Manufacturer guidance

Thickness range*: 50mm – 250mm (Non-standard thicknesses subject to MoQ).

Edges

Square.

Fire performance

To BS EN 13501-1, Euroclass A1.

Guidance for specification option:

Non-combustible.

U-value

0.00 W/m²K.

Guidance for specification option:

Using ROCKWOOL Cavity Batt to fully fill the party wall will reduce the U-value to 0.00 W/m²K.

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Recyclability

Can be recycled

Manufacturer guidance

ROCKWOOL is recyclable. For waste ROCKWOOL® material that may be generated during installation or at end of life, the manufacturer is happy to discuss the individual requirements of contractors and users considering returning these materials to their factory for recycling.

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