25mm Black Tissue Faced 2 Sides Insulation Slab Rockwool RWA45 is an A1 class, non-combustible fire resistant resin bonded stone wool insulation slab, used for structural elements such as concrete car park soffits.

Rockwool RWA45 Insulation Slab 25x600x1200mm with black tissue on 2 sides can provide from 30 minutes up to 240 minutes fire protection to the underside of concrete soffits.

Black Tissue Faced Both Sides RWA45 is a standard density (45kg per cubic meter) semi-rigid insulation slab with a certified thermal conductivity (lambda value) of 0.035W/mK.

Rockwool RWA45 Black Tissue Faced Two Sides is a robust long-lasting insulation made from renewable resources which will maintain high performance over the lifetime of the building.

RWA45 Double Sided Black Tissue Slab works in two ways to reduce noise, either by absorption of sound at the surface or inhibiting its transmission.

The absorption coefficient achieved will vary according to thickness and density of the slab and application.

The black tissue facings on both sides helps to avoid the slab edges from showing as shadows through the perforated inner sheet and assists in preventing fibre migration.

These fire, thermal and acoustic RWA45 black tissue faced 2 sides insulation slabs are free of CFCs and HCFCs and will not encourage the growth of fungi, mould or bacteria.

Rockwool works in two distinct ways to reduce noise, either by impeding the transmission of sound through an element of the structure or by absorption of sound at the surface.

The structure of the fibres in RWA45 insulation slabs make them ideal for use as a sound absorber with water repellent qualities of the insulation preventing moisture build up, damp and rot.

Specification:

Thickness: 25mm

Width: 600mm

Length: 1200mm

Pack Quantity: 16

Slab Coverage: 0.72m2

Pack Coverage: 11.52m2

Finish: Black Tissue Faced 2 Sides

Density: 45kg/m3 

R-Value: 0.70m2K/W

Thermal Conductivity: 0.035W/mK

Vapour Resistivity: Negligable, Water Repellent

Building Regulations: Class ‘O’ 

Fire performance: Euroclass A1 (non-combustible)

Black Tissue Faced 2 Sides Rockwool RWA45 Fixing and Application Guide:

 · When fixing a tile or modular system, it is advisable to start with a focus reference slab in the centre of the soffit with subsequent slabs being fixed working towards each edge.

 · The use of string lines or laser alignment equipment will assist in ensuring alignment and squareness of the installation.

 · If installed into concrete or steel composite deck, a pilot hold should first be drilled prior to the fixing being screwed into place.

 · Soffit Slabs should be fixed directly to the concrete soffit using Ejot DDS fixings with the Ejot DDT70 washer or similar.

 · Care should be taken not to over-tighten fixings to prevent damage to the slab surface.

 · For further information on fixing type and suitability for the substrate, please refer to the fixing manufacturer.

 · It is recommended that all board joints should be staggered and tightly butt jointed.

 · Soffit insulation products should not be used for supporting light fittings or services.

 · Such installations should be supported from the concrete soffit.

 · Where penetrations occur, the boards should be cut locally to ensure a tight fit around the penetration.

 · Slabs can be cut slightly oversized to ensure a tight fit under slight compression around the penetration.

 · Any small gaps that result from cutting can be infilled using the Acoustic Intumescent Sealant.

Black Tissue Faced (x2) Two Sides RWA45 Health and Safety:

 · The safety of Rockwool stone wool is confirmed by current UK and Republic of Ireland health & safety regulations.

 · Rockwool fibres are not classified as a possible human carcinogen.

 · The mechanical effect of fibres in contact with skin may cause temporary itching.

 · Cover exposed skin during handling and installation.

 · When working in an unventilated area, wear a disposable face mask.

 · Clean working area using vacuum equipment.

 · Waste should be disposed of according to local regulations.

 · Rinse in cold water before washing.

 · Ventilate the working area if possible.

 · Wear goggles when working overhead.

*Further information may be found in our Downloads section.

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