NBS Source
I'm a manufacturer

Application

Suitable for coastal, suburban and rural environments.

Description

A traditional through-colour render which incorporates an aggregate of small evenly sized pebbles into the mix.


Features and benefits:

  • WBS Roughcast (also referred to as Wet Dash) is a cementitious product incorporating silicone technology to produce an attractive through-colour render with excellent water resistant properties.
  • It is a traditional render which incorporates an aggregate of small evenly sized pebbles into the mix.
  • WBS Roughcast is a popular alternative to dry dash, whereby a flat basecoat is applied followed by a through-coloured slurry coat which when evenly applied, provides an attractive, watertight, textured finish.
  • WBS Roughcast can also be applied using a hopper or Tyrolean gun.

General information

Color

Cream

Green

Grey

Blue

White

Show more

Manufacturer guidance

Special colours may be available on request


Finish

Textured

Material

Polymer-modified cement

Shape

Other

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

Ten year

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 system . . . . . .

M21/210 External wall insulation system

Product range

Polymer Modified Renders

Specification data - External wall insulation systems

Support rails and brackets

-

Fixing method

-

Material

-

Manufacturer guidance

Insert requirements.

Boards

-

Fixings

ISO Plastic Fixings.

Insulation

-

Adhesive

-

Manufacturer guidance

Insert requirements.

Additional mechanical fixings

-

Manufacturer guidance

Insert requirements.

Fire barriers and stops

-

Material

Required.

Not required.

Fixings

-

Manufacturer guidance

Insert requirements.

Beads and trims

WBS aluminium beads, trims and profiles.

WBS plastic beads, trims and profiles.

WBS polyester-coated galvanized 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 manufacturer's 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

WBS Basecoat UF.

Render

-

Application

Finish coat.

Material

WBS Polymer Dashing Mortar.

Colour

Arran.

Banana.

Beige.

Buttermilk.

Champagne.

Cinnamon.

Cornish Grey.

Country Cream.

Cream.

Fintry Stone.

Green.

Grey.

Ivory.

Oatmeal.

Off White.

Pewter Grey.

Polar White.

Powder Blue.

Salmon Pink.

Sandstone.

Sterling White.

Terracotta.

White.

York.

Other.

Guidance for specification option:

Special colours may be available on request; consult manufacturer for details.

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 stabilizing 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 Scrim Cloth into the top third of the basecoat, overlapped by 75 mm. Mesh to be kept taught and fixed from the 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.
  • Trowel apply one coat of WBS Polymer Dashing Mortar to a minimum thickness of 4-6 mm in the traditional manner to the entire wall surface to be treated.
  • 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.
  • Always turn a sufficient quantity of the final coat for a gable or large panel into a bath or box to ensure that regularity of colour is achieved.
  • Throw the Roughcast onto the surface of the Dash Receiver whilst the Dash Receiver is still green (hard but not fully set), using a hand scoop or alternatively an adjustable Tyrolean gun may be used.
  • Do not go over semi-cured areas to fill in misses as this can lead to inconsistency of colour. Do not apply water during set.


Please contact WBS Technical for further details.

Packaged weight

25 kg.

Guidance for specification option:

Dry powder product supplied in 25 kg bags.

Sustainability data

Contains Red List materials

No

Literature

Through Coloured Renders / Spar Dash Systems

Through Coloured Renders / Spar Dash Systems

© 2024 NBS Enterprises Ltd. All rights reserved.