Rockwool Cavity Wall Building Slabs
Standard Rockwool Product, generally readily available in most thickness’s at the lower densities such as 45kg/m² and 60kg/m². As the slab densities increase, and product popularity declines, short lead times will apply.
Cavity insulation is a rigid full-fill insulation solution for masonry cavity wall construction, suitable for use in new builds or extensions. Lightweight and easy to handle, the batts are simple to install and provide a close fit against brick and blockwork, adapting to imperfections in the cavity wall.
The high performance Partial Fill Cavity Slab is a semi-rigid partial fill insulation solution for masonry and framed cavity wall construction. It is designed to withstand typical conditions on-site and absorb any irregularities on the inner leaf. Consists of a robust outer surface engineered to a resilient inner face. The slabs knit together when tightly butt jointed, eliminating heat loss caused by gaps.
Rockwool high performance Partial Fill Cavity Slab consists of layers of bonded, water repellent rock wool formed into resilient slabs using a resin binder; the slabs are heat cured and cut to standard sizes of 455mm x 120mm.
Rockwool manufacture the following thickness's (millimetres) ... 30, 40, 50, 60, 70, 80, 90, & 100.
All slabs have a belt mark covering one face. The slabs are normally positioned with this face outermost.
Insulation retaining fixings approved for use with this system are as follows ...
- Vista VE 2/VE-4 tie with V-23 retaining clip
- Lexsuco clip with retaining washer
- Ancon Staifix RT2 with AC Universal Clip
- Catnic BB-3 Tie and IRC 85 ClipAncon ST1 Type 1 Tie with Heavy Duty Clip
- Hemax 90S Heavy Duty Tie and Heavy DutyRetaining Clip
- Hemax 82 Tie with Universal Retaining Clip.
Unfortunately, we do not supply the retaining clips mentioned above.
BBA certified for all exposure zones
Outstanding thermal and fire insulation
Does not require TCBs
Prevents water transmission from the outer to inner leaf
Non-combustible (Euroclass A1)
Superior fit against blockwork
No sagging or slumping
Rockwool continues to work throughout the lifetime of the building. As well as reducing the heat needed to keep buildings warm in winter, stone wool insulation also maintains a cool interior temperature in summer. It’s energy efficient as well as being environmentally friendly all year round
All Rockwool RW slab products, either un-faced or with an aluminium foil or glass fleece on one or both surfaces, achieve an A1 classification in accordance
with BS EN 13501-1 and therefore comply with the requirements of non-combustible materials/products, as defined in all UK and Ireland Building Regulations.
Rockwool RW Slabs are highly water repellent and non-hygroscopic
For general building applications (Lambda 90:90)
at temperature 10 degrees C:
Rockwool RWA45 slab = 0.035 W/mK | Rockwool RW3 slab = 0.034 W/mK | Rockwool RW5 slab = 0.034 W/mK
Handling and Storage
Rockwool RW slabs are light and easy to cut to any shape with a sharp knife. They are shrink wrapped in polyethylene and supplied on pallets which are shrouded with a waterproof hood suitable for outside storage.
All standard un-faced slabs are manufactured 1200 x 600mm. All foil faced and tissue faced slabs are manufactured 1000 x 600mm. The standard thickness range of Rockwool RW slabs are shown in the table below.
* Denotes thickness also available as ‘standard’ with white or black tissue facing (not foil facing). All foil faced and tissue faced slabs (other than shown above) are non -standard and will be subject to minimum order quantities.