KIWA Steel Frame Direct Fix Stone Wool - Stone Wool Insulation

WBS aluminium brick slip base rail.

Guidance for specification option:

Securely fix Wetherby BSR starter track above DPC level at base of the system. Mechanically fix starter track at max. 300mm centres, 50mm from each end. WBS 3756 base rail connectors should be used to join the tracks, packing shims may be required to ensure the starter track is true to line and level. Any gaps behind the basetrack allowing free air movement behind the insulation should be sealed appropriately.

WBS aluminium base rail.

Guidance for specification option:

Securely fix Wetherby starter track with profile clip above DPC level at base of the system. Mechanically fix starter track at max. 300mm centres, 50mm from each end. WBS 3756 base rail connectors should be used to join the tracks, packing shims may be required to ensure the starter track is true to line and level. Any gaps behind the basetrack allowing free air movement behind the insulation should be sealed appropriately.

LS 5.5 (steel frame).

R-QCP (timber frame).

Boards are fixed in accordance with site conditions and manufacturer's instructions.

Stone wool insulation.

Guidance for specification option:

Thermal performance ranging from 0.036, thicknesses compatible with the system’s certification range between 50–250 mm.

Board size: 1200 x 600mm.

Minimum compressive strength: 10 kPa.

Thermal conductivity: 0.036 Wm²/K.

Performance in relation to fire:

• Class A1 (BS EN 13501-1:2002).
• Non-combustible.

Environmental:

• CFC-/ HCFC-free.
• Zero ozone depletion potential (ODP).
• Global warming potential (GWP): Less than five .

TKR screw range.

R-QCP screw range.

WBS stainless steel movement joints.

WBS PVC movement joints.

WBS stainless steel surface-mounted render stop beads.

WBS PVC surface-mounted render stop beads.

Manufacturer's standard.

Guidance for specification option:

Supplied in 50 m² rolls.

Heck silicone primer.

Guidance for specification option:

Apply Wetherby Primer with a brush or lamb’s wool roller as per manufacturer’s printed instructions. Allow primer to fully dry, minimum 12 hours.

Brick slip adhesive.

Guidance for specification option:

Trowel apply full spread of brick slip adhesive to the scrim adhesive. Use a 10 mm notched trowel to ensure minimum 5 mm thickness is achieved.

Heck silicone render finish.

Guidance for specification option:

Mix and apply Wetherby Silicone Textured Finish strictly in accordance with the manufacturer’s printed instructions. The top coat should be applied with a stainless steel trowel to the thickness of the grain and finished with a plastic float. Apply in a continuous application always working to a wet edge and in the same direction to ensure consistency of finish. Wherever possible, entire elevations should be completed in a single operation to avoid joint marks in the finish. This can often be achieved by working to natural breaks in the building or working to breaks in colour or texture.

Do not apply Wetherby Silicone Textured Finish with differing batch numbers on the same elevation. Care should be taken to avoid texture changes at different levels. Prior to setting, polish render with plastic float to give an even texture and remove all trowel marks.

WBS 7–25 mm brick slips.

Guidance for specification option:

WBS Brick Slips should be cleaned before application ensuring all slips are free of residue. Whilst the brick slip adhesive is wet the brick slips can be firmly pushed into the adhesive. Brick slips should be installed line and level and staggered leaving a consistent joint.

NB. Brick slips are manufactured using raw natural ceramics and will inevitably vary in nature. Natural variations in colour, texture and dimensions may be present. It is advisable to mix slips from at least 5 boxes to minimize grouping of colours. Any product deemed faulty or out of tolerance should not be applied and should be reported to Wetherby immediately. 

WBS pointing mortar.

Guidance for specification option:

Once brick slips have set, point up with WBS Pointing Mortar using a pointing gun. Shape mortar to desired joint type using a pointing trowel. Care should be taken not to apply WBS Pointing Mortar onto the brick slip face or pistols as this can be very difficult to remove. Once pointing mortar is dry, brush down the wall to remove all loose mortar etc.

Guidance for specification option:

Insert requirements:

• Render: Any NCS or RAL reference.
• Brick slips: See brick slip brochure for colours.

Aspira render protector.

Guidance for specification option:

Apply Wetherby Aspira render protector with a roller ensuring a full and even coverage, covering 100% of the substrate. The substrate must be fully dry and clean before application; ensuring morning dew is not present on the substrate. Cross hatch application is recommended to ensure all areas are fully treated. Do not dilute product and protect from rain for a minimum 12 hours after application to allow coating to fully dry. 

Not required.

WBS sealing tape.

Guidance for specification option:

Pre-compressed, expanding waterproof sealing tape.

WBS firtree fixings.

WBS jointing pieces.

WBS end caps.

WBS EVO-STIK silicone sealant.

WBS APU bead.

Submit samples of Wetherby Silicone Render / Brick Slips for approval. Keep approved samples on site for the duration of the contract for inspection and comparison purposes. The manufacturer offers a product sample service, providing a small sample of the finished build-up, colour and brick slip type before a final decision is made. Contact the manufacturer for further information.

Install system as per manufacturer’s instructions.

Inspection of completed installation.

Documentation for insulated render systems.

O&M manuals and data sheets relevant to the system installed.