100mm Unilin SR/CW, comprising a rigid phenolic insulation core between low emissivity foil facings used for traditional cavity masonry walls, achieves excellent U-Values whilst maintaining a residual cavity.

SR/CW partial fill cavity wall insulation is the solution of choice to achieve the lower U-Values asked for under the building regulations whilst maintaining a residual cavity as a protection from wind driven rain.

Unilin Safe-R SR/CW is manufactured to EN 13166 by Unilin Insulation with certified lambda (thermal conductivity) of 0.020 W/mK and Euroclass D-s1 d0 fire classification.

Partial fill masonry walls are the predominant construction method for traditional buildings, SR/CW phenolic insulation offers a solution when lower U-Values are demanded.

The high performance to thickness ratio of SR/CW allows for excellent U-Values to be achieved within traditional constructions without dramatically increasing the overall width of the wall.

Using SR/CW allows the residual cavity to be maintained, providing an effective method of preventing moisture ingress.

SR/CW is durable, rot proof and sufficiently stable to remain effective as cavity insulation for the life of the building.

Unilin Safe-R SR/CW is a cheaper alternative to Kingspan Kooltherm K108 Cavity Board.

The recommended residual cavity width required is 50mm in accordance with BBA agrément certification.

Specification:

Thickness: 100mm

Width: 450mm

Length: 1200mm

Size: 100mm x 450mm x 1200mm

Pack Quantity: 4 sheets

Pack Coverage: 2.16m2

Board Coverage: 0.54m2

Profile: Square Edge

R-Value: 5.00 m2K/W

Density (Foam Core): 32kg/m3 

Thermal Conductivity: 0.020 W/mK

Compressive Strength: >100 (kPa)

Reaction to Fire: Euroclass D, s1-d0

Unilin SR/CW Partial Fill Cavity Features:

 · Clear cavity maintained.

 · Protection from wind driven rain.

 · Reduced insulation thickness.

 · Used for traditional masonry walls.

 · Reduced thermal bridging.

 · Provides the most efficient U-Values.

 · Effective method of preventing moisture ingress.

 · Lightweight and easy to install.

 · Meets U-values asked for in the Building Regulations.

 · Premium phenolic rigid foam insulation.

 · Suitable for new build and refurbishment projects.

 · Suitable for domestic and non-domestic buildings.

 · Certified lambda (thermal conductivity) of 0.020 W/mK.

 · Declared Euroclass D-s1 d0 fire classification.

 · Manufactured to EN 13166 by Unilin Insulation.

 · BBA Certified (certification no. 23/6884).

 · Durable, rot proof and stable.

Unilin SR/CW Partial Fill Cavity Board Installation Guidelines:

 · Blocks should be laid in accordance with relevant standards and ensure that mortar is robust enough to avoid slumping at joints and allow for the correct positioning of wall ties.

 · It is recommended that no more than four courses of block are laid on the preceding skin before installation of the insulation.

 · This allows for wall ties to be inserted accurately and without bending and thus distorting the physical characteristics of the wall ties.

 · Ensure the wall is level and free of any protrusions before installing the insulation with all edges tightly interlocked.

 · Mortar should be struck from the inner cavity face of the block to ensure mortar squeeze is minimized on the cavity side.

 · The two courses of blockwork can then be built, ensuring the mortar is struck back from the cavity face to prevent mortar squeeze.

 · Insert wall ties maximum 600mm centres one block course below DPC.

 · Wall ties should incorporate retaining clips and be BBA Certificate Agrément approved.

 · Secure cavity boards tight against inner leaf with retaining clip on wall ties.

 · Joints should be tightly butted.

 · Ensure a minimum 150mm overlap with the floor insulation.

 · The receiving block should be plumb to provide a flat surface to accept the insulation.

 · As with setting out, installation should commence from adjacent corners.

 · Stagger the board joints to create an offset brick bonded pattern.

 · Maintain a 50mm residual cavity to suit all exposure zones.

 · In isolated circumstances where the cavity is obstructed, a minimum 25mm residual cavity should always be maintained and extra consideration should be given to fixings and weatherproofing.

 · Any reduction in cavity width should be agreed with Building Control.

 · Place wall ties at maximum 900mm x 450mm centres, securing with a minimum of 3 wall ties per board.

 · Ensure block joints are fully bonded with unbroken mortar.

 · Fix wall ties 225mm vertically and 150mm horizontally from the face of unbonded jambs.

 · Ensure wall ties and cavities are kept clean of mortar.

 · Wall ties should be sloped downwards towards the outer leaf.

 · A cavity board should be used to keep the cavity clean.

 · Newly erected masonry should be protected to prevent the mortar being washed out of the joints by rain.

 · Walls should be prevented from becoming saturated by covering the top of the wall with waterproof sheets; this is particularly important to minimise the incidence of efflorescence and lime bloom.

 · When any working platform is not in use, the inner board should be turned away from the wall to prevent the splashing of the wall face.

 · ACDs must be followed to ensure that installation is in accordance with current Building Regulations and accounted for in the energy calculation.

*Further information may be found in our Downloads section.

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Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

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