Wetherby Modular System 3 - Brick Slip Mesh

Verified by manufacturer 9 months ago

Thermal Performance.

The systems can improve the thermal performance of external walls and can contribute to satisfying the requirements of the National Building Regulations.

Strength and Stability.

The systems has adequate strength and is designed to adequately resist impact damage and wind loads encountered in the UK. When the system incorporates a stone slip finish, the system can only be applied at ground and first floor level (maximum 6 m in height). 

System Tested to BS EN 13501-1.

Achieve a value of A1 reaction to fire classification. Metal cavity rails must be used above 18 m and Timber battens are acceptable for anything less than this.

Risk of Condensation.

The system can contribute to a limiting risk of interstitial and surface condensation.

Durability.

When installed and maintained in accordance with the Certificate holders recommendations and this Certificate, the system will remain effective for at least 30 years.

Further Information.

For further information on the above points visit the system KIWA BDA Certificate.

15mm RagRail Cavity Spacer Rails.

• RagRails are to be fixed down one side of the rail and through the centre of the rail hitting the studs at 300 mm centres.
• The above would all be subject to Job Specific Detailing, including Pull Out Tests and Wind Load Calculations.

25mm RagRail Cavity Spacer Rails.

• RagRails are to be fixed down one side of the rail and through the centre of the rail hitting the studs at 300 mm centres.
• The above would all be subject to Job Specific Detailing, including Pull Out Tests and Wind Load Calculations.

25mm Timber Battens.

• Timber Battens are to be fixed at every 150 mm centres.
• The above would all be subject to Job Specific Detailing, including Pull Out Tests and Wind Load Calculations.

LS 5.5 (steel frame).

R-QCP (timber frame).

Framed substrate sheathed using Wetherby approved sheathing board.

The framed substrate must be sheathed using a Wetherby approved sheathing board ensuring that they achieve minimum pull out requirements to be suitable for the systems application.

Fix boards in accordance with site conditions and manufacturer instructions.

Stone Wool Insulation.

TKR Screw Range.

R-QCP Screw Range.

Not required.

Tenmat Intumescent Strip.

• Intumescent strips must be screw fixed in place at 250 mm maximum centres, using a non-combustible screw with a head of no more than 11.5 mm diameter.
• They should be mechanically fixed at agreed locations to form horizontal and if specified vertical fire breaks in the cavity.

Tenmat NVFB Fire Barrier.

Tenmat NVFB Non-Ventilated Fire Barrier – Vertical cavity closer and cavity closer around openings (where required).

TKE Range – Steel Frame .

Typically used to fix fire barrier and intumescent strips to their agreed locations (Rail/ Sheathing Board/ Steel Frame).

R-UCF Screw Range screw range.

Typically used to fix fire barriers to their agreed locations (Timber Batten / Sheathing Board/ Timber Frame).

JT3-FR6 Stainless Steel Screw.

Typically used to fix NVFB fire barriers to their agreed locations (Sheathing Board/ Framed Substrate).

Not required.

Deflector beads.

WBS Stainless Steel Movement Joints.

WBS PVC Movement Joints.

WBS Stainless Steel Surface Mounted Render Stop Beads.

WBS PVC Surface Mounted Render Stop Beads.

Compriband sealing tape must be installed between the insulation boards.

Where required.

WBS Alkali-resistant scrim cloth incorporated into scrim adhesive.

Stainless Steel Brick Mesh applied over scrim adhesive.

Alkali Resistant Mesh 50 m² (roll).

Stainless Steel Brick Mesh – 1195 x 819 mm.

Stainless Steel Stone Slip Mesh – 1195 x 819 mm.

TKE screw range.

• Combined with the relevant cap/ washer, this fixing is typically used for the main fixings installed through the brick slip mesh.
• Normally specified when fixing into the RagRail/ Cavity Spacer Rail.

R-UCF screw range.

• Combined with the relevant cap/ washer, this fixing is typically used for the main fixings installed through the brick slip mesh.
• Only specified specify when fixing into the timber batten.

WBS 9-25mm Brick Slips.

• Butter the back of the pistol corners with WBS Brick Slip Adhesive and apply to corners and door/ window reveals.
• Measure the distance between corners and/ or outer edges to identify the number of bricks required per course and the subsequent width of the pointing joints.
• Cut bricks to size using a bench saw or standard tile cutter where required.
• Apply WBS Brick Slip Adhesive to back of Brick Slips and install at the required location leaving a consistent joint between each (approximately 10 mm).
• Stagger slips to give the appearance of conventional brickwork or install in a stack bond pattern in accordance with the required design.
• 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.

• 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.

Stone Slips.

Contact Wetherby Building Systems for further information regarding this system. 

WBS Sealing Tape: Pre-compressed, expanding waterproof sealing tape.

WBS Firtree Fixings.

WBS Jointing Pieces.

WBS End Caps.

WBS EVO-STIK Silicone Sealant.

WBS APU Bead.

Roof verge extenders.

Under and over cills.

Cill extenders.

End stop profiles.

Insert requirement: Available in stainless steel, PVC-U or organic polyester powder-coated galvanized steel.

Corner mesh profiles.

Insert requirement: Available in stainless steel, PVC-U or organic polyester powder-coated galvanized steel.

Expansion joint profiles.

Insert requirement: Available in stainless steel, PVC-U or organic polyester powder-coated galvanized steel.

Approved samples required.

• Submit samples of Wetherby 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.

• Securely fix Wetherby BSR starter track above DPC level at base of the system.
• Mechanically fix starter track at maximum 300 mm centres, 50 mm from each end.
• WBS 3756 base rail connectors should be used to join the tracks.
• Drainage holes must be drilled into the back of the starter track to allow the cavity to drain.
• Install 11 mm holes at 150 mm centres to allow for drainage and partial ventilation.
• Any gaps behind the basetrack allowing free air movement behind the insulation should be sealed appropriately.

Inspection, documentation, O&M manuals and data sheets.

• Inspection of completed installation.
• Documentation for insulated render systems.
• O&M manuals and data sheets relevant to the system installed.