NBS Source
I'm a manufacturer

Application

  • WBS Epsirend Polymer Render: It is widely used for building elevations that require a strikingly clean finish and is also used extensively in feature work on bands, plinths etc.


Description

Cementitious through-coloured render.


Features and benefits:

  • WBS Epsirend Polymer Render is a cementitious, through-coloured render allowing a smooth or scratch finish to be achieved by the use of a wooden float, plastic trowel, sponge or scratch pad. It is widely used for building elevations that require a strikingly clean finish and is also used extensively in feature work on bands, plinths etc.

General information

Color

Manufacturer guidance

Special colours may be available on request

Finish

Scratched

Smooth

Manufacturer guidance

  • Sponge.
  • Trowel.
  • Scratch Float.

Material

Polymer-modified cement

Shape

Other

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

Other

Uniclass

Ss_25_45_72_28 External wall insulation systemsPrimary

CAWS

M20/160 Proprietary cement gauged render

M20/19 Proprietary cement gauged render

M21/20 External wall insulation systems

M21/210 Rendered external wall insulation systems

Product range

Polymer Modified Renders

Specification data - External wall insulation systems

Support rails and brackets

-

Fixing method

-

Bracket fixings

-

Manufacturer guidance

Insert requirements.

Boards

-

Fixings

ISO Plastic Fixings.

Insulation

-

Material

-

Manufacturer guidance

Insert requirements or leave blank.

Adhesive

-

Manufacturer guidance

Insert requirements or leave blank.

Additional mechanical fixings

-

Manufacturer guidance

Insert requirements or leave blank.

Fire barriers and stops

-

Material

Required.
Not required.

Beads and trims

WBS Aluminium beads, trims and profiles.
WBS Plastic beads, trims and profiles.
WBS Polyester coated galvanised steel beads, trims and profiles.
WBS Stainless steel beads, trims and profiles.

Manufacturer guidance

  • A wide range of beads, trims and fixings are available to compliment this render system which allows precise detailing to be achieved. Contact Wetherby Technical Support for further information.
  • High quality sealants, tapes and mastics also available.

Movement joints

-

Form with

Required.
Not required.

Sealant

WBS Low modulus silicone sealant.

Render carrier or reinforcement

-

Material

WBS Alkali Resistant Scrim Cloth incorporated into WBS Scrim Adhesive.

Mesh size

Manufacturer's standard.

Render

-

Application

Finish coat.

Material

WBS Epsirend.
WBS Epsirend (WP).
WBS Epsirend (FT).

Decorative finish

Scratch finish.

Guidance for specification option:

  • Scratching should take place when the render is considered green (i.e. set but not fully hardened). The exact timing of this operation varies according to weather conditions and can be anything from 4-48 hours, however, usually the next day is considered adequate. When green, remove approximately 1-2 mm of the surface with a nail float, in an even circular motion, to achieve the scratched texture finish. Render should be dry enough not to stick to the nail float.
  • When dry, brush down with a soft brush to remove any loose material. If scrape patterns or marks are observed, they should be softened by gently scraping or brushing. Loose material that has been scraped from the wall may also be used to repair small blemishes at this stage.

Smooth finish.

Guidance for specification option:

A smooth finish is achieved using a suitable float and finished using a dry lining sponge (sponge must be dry for this process).


Manufacturer guidance

  • Sponge.
  • Trowel.
  • Scratch Float.

Colour

Arran.
Buttermilk.
Champagne.
Cinnamon.
Cream.
Fintry Stone.
Green.
Grey.
Ivory.
Oatmeal.
Pewter Grey.
Polar White.
Powder Blue.
Salmon Pink.
Sandstone.
Sterling White.
Stone.
Terracotta.
White.
York.

Manufacturer guidance

Special colours may be available on request.

Execution

Install system as per manufacturer’s instructions.

Manufacturer guidance

  • Brush down substrate to remove any friable material, algae or lichen. Any ridges or protrusions should be removed and hollows filled to provide a smooth surface.
  • Apply fungicidal wash if required to remove all algae / fungus from the substrate.
  • Apply stabilising solution if required to help improve adhesion and offer uniform suction.
  • Attach base rails and the relevant surface profiles.
  • Apply the WBS Basecoat to an even thickness of 6-8 mm.
  • Bed the WBS Alkali Resistant Mesh into the top third of the basecoat, overlapped by 75 mm. Mesh to be kept taught and fixed from top downwards. No laps within 150 mm of any reveal or corner. Ensure mesh is covered by the basecoat.
  • Bed 200 x 200 mm off-cuts of mesh positioned at 45º to window opening corners.
  • Lightly scratch basecoat surface with a scratch comb to provide a key for finishing coat. Allow basecoat to fully dry before applying the finishing coat.
  • Apply top coat render at a thickness of 10-12 mm ensuring that it is finished proud of all profiles.
  • A darby or straight edged tool may be used to ensure a relatively uniform thickness which can then be smoothed out using a plastic float.

Basecoat

WBS Basecoat UF.

WBS Scrim Adhesive.

Packaged weight

Dry powder product supplied in 25 kg bags.

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Similar products from Wetherby Wall Systems Ltd | Part of ROCKWOOL Group

Brick Slip Mesh System - Brick Slip System

Brick Slip Mesh System - Brick Slip System

Epsibrick External Wall Insulation System - PS1

Epsibrick External Wall Insulation System - PS1

Epsibrick External Wall Insulation System - PS2

Epsibrick External Wall Insulation System - PS2

Epsicon 3 - External Wall Insulation System - PS2

Epsicon 3 - External Wall Insulation System - PS2

Epsicon 3 - External Wall Insulation System - PS3 - External Wall Insulation Dash Finish

Epsicon 3 - External Wall Insulation System - PS3 - External Wall Insulation Dash Finish

Epsitec - Render Carrier Board – 7mm Brick Slips

Epsitec - Render Carrier Board – 7mm Brick Slips

Epsitec - Render Carrier Board – Silicone Render

Epsitec - Render Carrier Board – Silicone Render

Epsiwall External Wall Insulation System - PS2

Epsiwall External Wall Insulation System - PS2

HECK ETA 18_0229 - Stone Wool, Silicone Render (A2) and Mineral Render (A1)

HECK ETA 18_0229 - Stone Wool, Silicone Render (A2) and Mineral Render (A1)

KIWA Steel Frame Direct Fix Stone Wool - Stone Wool Insulation

KIWA Steel Frame Direct Fix Stone Wool - Stone Wool Insulation

© 2025 Hubexo North UK Ltd. All rights reserved.