Name: Epsiwall External Wall Insulation System - PS2
Brand: Wetherby Building Systems Ltd
SKU: 27SW9qDULf686Hcphejvu6

Verified by manufacturer 26 days ago

A masonry BBA certified system consisting of two different types of insulation boards (enhanced EPS and phenolic), basecoated, meshed and finished off using a thin coat silicone texture.

Finish

Textured

Material

Silicone

Expanded polystyrene (EPS)

Uniclass

Ss_25_45_72_28 External wall insulation systemsPrimary

CAWS

M21/210 External wall insulation system

M21/20 External wall insulation system . . . . . .

System performance

The systems can improve the thermal performance of external walls and can contribute to satisfying the requirements of the National Building Regulations. For further information please visit the system’s BBA Certificate.

Durability - 30 years; Fire performance to BS EN 13501-1, class B-s1, d0.

When installed and maintained in accordance with the manufacturer's recommendations and the BBA Certificate, the system will remain effective for at least 30 years.

Durability - 60 years; Fire performance to BS EN 13501-1, class B-s1, d0.

The durability can be extended to 60 years by using different fixings and supplementary adhesive, and by following a planned inspection and an effective maintenance schedule as described in sections 12 and 13 of the systems BBA certificate.

Preparation

Remove any loose material and existing render.

Not required.

Wetherby Dubbing Render.

Where necessary dub out any hollow or defective areas to leave a suitable surface for the application of the insulation boards. Maximum coat thickness 16 mm.

WBS Biocidal Wash.

Treat areas of moss, algae and mould growth with WBS Biocidal Wash.

WBS Stabilising Solution.

Dense smooth surfaces may require treating with WBS Stabilising Solution / Bonding Agent to ensure adequate adhesion on wet fix or render only applications.

Support rails and brackets

Fixing method

Material

WBS base rail.

Bracket fixings

WBS HIT 6/5 hammerscrew bead fixing.

Mechanical fixing.

Insulation

Material

Enhanced EPS 70E.

Thicknesses compatible with the system’s certification range between 40–240 mm.

- Board size: 1200 x 600 mm.

- Density: 15 kg/m³.

- Minimum compressive strength: 70 KN/m².

- Thermal conductivity: 0.032 Wm²/K.

- Fire performance:

- Flame retardant grade.

- Class E (BS EN 13501-1:2002).

- Environmental:

- CFC/ HCFC free.

- Zero ODP.

- GWP less than 5.

Enhanced EPS 90E.

Thicknesses compatible with the system’s certification range between 40–240 mm.

- Board size: 1200 x 600 mm.

- Density: 18 kg/m³.

- Minimum compressive strength: 100 KN/m².

- Thermal conductivity: 0.030 Wm²/K.

- Fire performance:

- Flame retardant grade.

- Class E (BS EN 13501-1:2002).

- Environmental:

- CFC and HCFC free.

- Zero ODP.

- GWP less than 5.

Phenolic.

Thicknesses compatible with the system’s certification range between 60–120 mm.

- Board size: 1200 x 600 mm.

- Density: 40 kg/m³.

- Minimum compressive strength: 150 KN/m².

- Thermal conductivity: 0.021–0.023 Wm²/K (dependent on the thickness of the board).

- Fire performance:

- Class C-s1, d0.

- Environmental:

- CFC and HCFC free.

- Zero ODP.

- GWP less than 5.

Adhesive

Insulation boards can be mechanically and adhesively fixed or mechanical only. If a plastic pin fixing is used a minimum of 40% of bedding adhesive must be applied to the back of the boards. If a metal pin fixing is used, then bedding adhesive will not be required. If phenolic insulation boards are specified, the boards must be fully bedded and mechanically fixed.

Required.

Not required.

Additional mechanical fixings

The Enhanced EPS Boards are mechanically fixed with WBS approved fixings. Fixing of the phenolic insulation boards may require fixing through the mesh, contact manufacturer for further information. The fixings frequency, type and length are subject pull-out tests and wind load calculations.

SPIT ISO range.

T-FIX-8M range.

T-FIX-8S range.

Fire barriers and stops

Material

Lamella insulation.

Fixings

Fixing type, length and frequency are all subject to pull-out tests, job-specific detailing and requirements and wind load calculations. Please contact manufacturer for further information.

TID-MR range.

DHM range.

Movement joints

Form with

All structural movement joints must be mirrored through the EWI System. As a minimum, incorporate the movement joints every 7–10 m vertically and at every other floor level horizontally. Structural Engineers will be required to confirm how much movement will occur and where movement joints are located in the substrate.

WBS stainless steel movement joints.

WBS PVC movement joints.

WBS stainless steel surface mounted render stop beads.

WBS PVC surface mounted render stop beads.

Sealant

Compriband sealing tape between the insulation boards.

Where movement joints are required.

Render carrier or reinforcement

Material

WBS Alkali-resistant scrim cloth incorporated into bedding adhesive.

Mesh size

Roll.

50 m².

Fixings

Secondary mechanical fixings are required on all projects two storeys and above at a rate of 1 per m² as per BRE Report BR135:2013. NHBC require in all cases that a minimum of one non-combustible fixing is installed through the reinforcement mesh per insulation board, in addition to other fixings.

TID-MR range.

DHM range.

Render

Material

Heck silicone primer.

Heck silicone render finish.

Colour

Any NCS or RAL reference. Insert requirements.

Protective coating

None.

Aspira render protector.

Optional.

System accessories

None.

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.

Samples required

The manufacturer offers a product sample service, providing a small sample of the finished build-up, colour and texture before a final decision is made. Contact the manufacturer for further information.

None.

Submit samples of textured Wetherby silicone finish for approval. Keep approved samples on site for the duration of the contract for inspection and comparison purposes.

System completion

Inspection of completed installation.

Documentation for insulated render systems.

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

Platform

Compatible

Version

IFC

Revit

System performance The systems can improve the thermal performance of external walls and can contribute to satisfying the requirements of the National Building Regulations. For further information please visit the system’s BBA Certificate.	Durability - 30 years; Fire performance to BS EN 13501-1, class B-s1, d0. When installed and maintained in accordance with the manufacturer's recommendations and the BBA Certificate, the system will remain effective for at least 30 years. Durability - 60 years; Fire performance to BS EN 13501-1, class B-s1, d0. The durability can be extended to 60 years by using different fixings and supplementary adhesive, and by following a planned inspection and an effective maintenance schedule as described in sections 12 and 13 of the systems BBA certificate.
Preparation Remove any loose material and existing render.	Not required. Wetherby Dubbing Render. Where necessary dub out any hollow or defective areas to leave a suitable surface for the application of the insulation boards. Maximum coat thickness 16 mm. WBS Biocidal Wash. Treat areas of moss, algae and mould growth with WBS Biocidal Wash. WBS Stabilising Solution. Dense smooth surfaces may require treating with WBS Stabilising Solution / Bonding Agent to ensure adequate adhesion on wet fix or render only applications.
Support rails and brackets	-
Fixing method	-
Material	WBS base rail.
Bracket fixings	WBS HIT 6/5 hammerscrew bead fixing. Mechanical fixing.
Insulation	-
Material	Enhanced EPS 70E. Thicknesses compatible with the system’s certification range between 40–240 mm. - Board size: 1200 x 600 mm. - Density: 15 kg/m³. - Minimum compressive strength: 70 KN/m². - Thermal conductivity: 0.032 Wm²/K. - Fire performance: - Flame retardant grade. - Class E (BS EN 13501-1:2002). - Environmental: - CFC/ HCFC free. - Zero ODP. - GWP less than 5. Enhanced EPS 90E. Thicknesses compatible with the system’s certification range between 40–240 mm. - Board size: 1200 x 600 mm. - Density: 18 kg/m³. - Minimum compressive strength: 100 KN/m². - Thermal conductivity: 0.030 Wm²/K. - Fire performance: - Flame retardant grade. - Class E (BS EN 13501-1:2002). - Environmental: - CFC and HCFC free. - Zero ODP. - GWP less than 5. Phenolic. Thicknesses compatible with the system’s certification range between 60–120 mm. - Board size: 1200 x 600 mm. - Density: 40 kg/m³. - Minimum compressive strength: 150 KN/m². - Thermal conductivity: 0.021–0.023 Wm²/K (dependent on the thickness of the board). - Fire performance: - Class C-s1, d0. - Environmental: - CFC and HCFC free. - Zero ODP. - GWP less than 5.
Adhesive Insulation boards can be mechanically and adhesively fixed or mechanical only. If a plastic pin fixing is used a minimum of 40% of bedding adhesive must be applied to the back of the boards. If a metal pin fixing is used, then bedding adhesive will not be required. If phenolic insulation boards are specified, the boards must be fully bedded and mechanically fixed.	Required. Not required.
Additional mechanical fixings The Enhanced EPS Boards are mechanically fixed with WBS approved fixings. Fixing of the phenolic insulation boards may require fixing through the mesh, contact manufacturer for further information. The fixings frequency, type and length are subject pull-out tests and wind load calculations.	SPIT ISO range. T-FIX-8M range. T-FIX-8S range.
Fire barriers and stops	-
Material	Lamella insulation.
Fixings Fixing type, length and frequency are all subject to pull-out tests, job-specific detailing and requirements and wind load calculations. Please contact manufacturer for further information.	TID-MR range. DHM range.
Movement joints	-
Form with All structural movement joints must be mirrored through the EWI System. As a minimum, incorporate the movement joints every 7–10 m vertically and at every other floor level horizontally. Structural Engineers will be required to confirm how much movement will occur and where movement joints are located in the substrate.	WBS stainless steel movement joints. WBS PVC movement joints. WBS stainless steel surface mounted render stop beads. WBS PVC surface mounted render stop beads.
Sealant	Compriband sealing tape between the insulation boards. Where movement joints are required.
Render carrier or reinforcement	-
Material	WBS Alkali-resistant scrim cloth incorporated into bedding adhesive.
Mesh size Roll.	50 m².
Fixings Secondary mechanical fixings are required on all projects two storeys and above at a rate of 1 per m² as per BRE Report BR135:2013. NHBC require in all cases that a minimum of one non-combustible fixing is installed through the reinforcement mesh per insulation board, in addition to other fixings.	TID-MR range. DHM range.
Render	-
Material	Heck silicone primer. Heck silicone render finish.
Colour Any NCS or RAL reference. Insert requirements.	-
Protective coating	None. Aspira render protector. Optional.
System accessories	None. 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.
Samples required The manufacturer offers a product sample service, providing a small sample of the finished build-up, colour and texture before a final decision is made. Contact the manufacturer for further information.	None. Submit samples of textured Wetherby silicone finish for approval. Keep approved samples on site for the duration of the contract for inspection and comparison purposes.
System completion	Inspection of completed installation. Documentation for insulated render systems. O&M manuals and data sheets relevant to the system installed.

Epsiwall External Wall Insulation System - PS2

Application

Description

General information

Finish

Material

Uniclass

CAWS

Specification data - External wall insulation systems

System performance

Durability - 30 years; Fire performance to BS EN 13501-1, class B-s1, d0.

Durability - 60 years; Fire performance to BS EN 13501-1, class B-s1, d0.

Preparation

Not required.

Wetherby Dubbing Render.

WBS Biocidal Wash.

WBS Stabilising Solution.

Support rails and brackets

Fixing method

Material

WBS base rail.

Bracket fixings

WBS HIT 6/5 hammerscrew bead fixing.

Insulation

Material

Enhanced EPS 70E.

Enhanced EPS 90E.

Phenolic.

Adhesive

Required.

Not required.

Additional mechanical fixings

SPIT ISO range.

T-FIX-8M range.

T-FIX-8S range.

Fire barriers and stops

Material

Lamella insulation.

Fixings

TID-MR range.

DHM range.

Movement joints

Form with

WBS stainless steel movement joints.

WBS PVC movement joints.

WBS stainless steel surface mounted render stop beads.

WBS PVC surface mounted render stop beads.

Sealant

Compriband sealing tape between the insulation boards.

Render carrier or reinforcement

Material

WBS Alkali-resistant scrim cloth incorporated into bedding adhesive.

Mesh size

50 m².

Fixings

TID-MR range.

DHM range.

Render

Material

Heck silicone primer.

Heck silicone render finish.

Colour

Protective coating

None.

Aspira render protector.

System accessories

None.

WBS sealing tape.

WBS firtree fixings.

WBS jointing pieces.

WBS end caps.

WBS EVO-STIK silicone sealant.

WBS APU bead.

Samples required

None.

Submit samples of textured Wetherby silicone finish for approval. Keep approved samples on site for the duration of the contract for inspection and comparison purposes.

System completion

Inspection of completed installation.

Documentation for insulated render systems.

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