NBS Source
List your products
Application

  • 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 4-6 mm.
  • Bed the Alkali Resistant Mineral Fibre 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.
  • Apply the remaining surface render beads.
  • Lightly scratch the basecoat surface when hardened with a scratch comb to provide a key for finishing coat.
  • Allow basecoat to fully dry.
  • Apply the dash receiver at a thickness of 8-10 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 be smoothed out using a plastic float.
  • Complete individual surfaces in one operation where practical. Where this is not possible, work joints are to be agreed with the Architect.
  • Apply WBS Aggregate by evenly throwing onto the render in an upwards motion whilst it is still wet to give a uniform finish.

Description

WBS Dry Dash Finish (also referred to as pebble dash) gives a fresh, hard-wearing, waterproof finish. It is ideal for use on both render only projects and as a final maintenance-free finish for the WBS range of external wall insulation systems, such as silicone & mineral renders, brick effect render, or the brick slip cladding system.

The final aesthetic appearance of any dash project can vary enormously depending on the colour of the dashing mortar, chosen in conjunction with a complimentary or contrasting aggregate.

Depending on the type of application required, WBS offer a range of four different dashing mortars to suit a variety of substrates.

Packaging:

  • Render: Dry powder product supplied in 25 kg bags.
  • Aggregate: Dashing grade aggregate, supplied in 25 kg bags.

Application:

  • 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 4-6 mm.
  • Bed the Alkali Resistant Mineral Fibre 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.
  • Apply the remaining surface render beads.
  • Lightly scratch the basecoat surface when hardened with a scratch comb to provide a key for finishing coat.
  • Allow basecoat to fully dry.
  • Apply the dash receiver at a thickness of 8-10 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 be smoothed out using a plastic float.
  • Complete individual surfaces in one operation where practical. Where this is not possible, work joints are to be agreed with the Architect.
  • Apply WBS Aggregate by evenly throwing onto the render in an upwards motion whilst it is still wet to give a uniform finish.

General information
Specification data - Multicoat render systems
Product Reference

WBS Dry Dash Finish

Basecoat

WBS Basecoat UF

WBS Scrim Adhesive

Reinforcement

WBS Alkali Resistant Scrim Cloth incorporated into WBS Scrim Adhesive

Dashing mortar -
Type

WBS DA1

Standard Dash Receiver

WBS DA2

High Polymer Dash Receiver.

WBS DA3

Silicone Dash Receiver.

WBS DA4

Overcoating Silicone Dash Receiver.

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

Aggregate

Ashton Cream

Barleycorn

Beige Marble

Black and White

Brampton Dash

Brecon Dash

Buff Quartz

Calcined Flint

Classic

Derwent

Eden

Farnley

Harvest

Ingleton

Lisbon

Malham

Milford

Polar White

Roath

Red and White

Accessories

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

WBS Low Modulus Silicone Sealant

Product Options

Dashing Render Colours:

  • Special colours may be available on request.

Dashing Aggregate Colours:

  • Dashing aggregates are available in a number of standard colours and sizes. Special colours may be available on request.

Accessories:

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

Literature
Third party certifications
  • Certificate 97/3428
Similar products from Wetherby Building Systems Ltd