Wetherby Epsitec EPS Dash System

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A KIWA BDA certified external thermal insulation composite system consisting of either vertical timber battens or cavity spacer rails, enhanced EPS insulation board, base-coated, meshed, finished with dash receiver and dashing stone finish.

 

Features and benefits:

  • Moisture control contribute to limiting the risk of interstitial and surface condensation.
  • Will resist wind-driven rain penetration across the partially ventilated cavity to the supporting wall.
  • Designed to adequately resist impact damage and wind loads normally encountered in the UK.
  • Classified as European class B-s1, d0 in accordance with BS EN 13501-1.
  • Improves the thermal performance of external walls and can contribute to satisfying the requirements of the National Building Regulations.
  • Service life durability of the System will depend on the environment (operating conditions) in which the System will be used.

 

Preparation:

  • All sheathing boards must achieve minimum pull out requirements to be suitable for the system application.
  • The substrate to receive the WBS system must be completely dry and not damaged by rain/ frost to reduce the board performance in any way.
  • The board manufacturer should be consulted and pull-out tests redone before continuing if rain/ frost damage is evident.
  • The substrate shall be clean and structurally sound.
  • Sheathing boards /panel substrates should be line and level ensuring RagRails can be installed flush to the substrate.
  • Slight variances in the substrate can be overcome by using suitable packers to ensure the system is installed line and level.
  • If the walls are not line and level, the fixing lengths must be checked to ensure adequate embedment into the sheathing board /frame substrate. This will need to be confirmed on site prior to the installation of the Wetherby system.
  • Sizing of flashings, trims and beads may also require alterations.
  • Where packing out of the RagRail or Timber Batten is required, the fixing lengths may need to be increased. This will need to be confirmed on site prior to the installation of the Wetherby system.
  • All sheathing boards must be securely fixed, correctly jointed and sealed (where required) as per the board manufacturer instructions.
  • Treatment to Existing Timber/ Steel Cladding – Remove any defective areas of the existing substrate and where required make repairs ensuring the surface is ready to receive the EWI system.
  • The existing walls are to be cleaned to the satisfaction of the Contract Administrator, to remove any friable material, algae or lichen.
  • WBS Biocidal Wash can be used to treat areas of moss, algae and mould growth.
Platform Compatible Version Certified to
IFC IFC - 1 2.1
Revit Revit - 1 2.1

  • Properties and values
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Properties and values

IFC
IfcExportAs
IfcCoveringType
IfcExportType
CLADDING
COBie
BOS_General
NBS_Data
BaseBoardsFixings
TKR Screw Range,R-QCP Screw Range
BaseBoardsMaterial
Framed substrate sheathed using Wetherby approved sheathing board
BeadsAndTrims
Not required,Deflector beads
BoardThickness
50ȓ240 mm
CompressiveStrength
n/a
ContainsRedListMaterials
n/a
CountryOfMaterialOrigin
n/a
CountryOfProductManufacture
n/a
DecorativeFinishColour
n/a
Density
n/a
Dimensions
1200 x 600 mm
EmbodiedCarbon
n/a
EnvironmentalPerformance
CFC/ HCFC Free
Execution
Install system as per manufacturerșs instructions
FireBarriersAndStopsFixings
TKE Range
FireBarriersAndStopsMaterial
Stone Wool/ Horizontal Lamella Fire Barriers,Stone Wool/ Vertical Lamella Fire Barriers,Tenmat Intumescent Strip
GlobalWarmingPotentialGWP
Less than 5
InsulationFixings
LS 5.5 (steel frame),R-QCP (timber frame)
InsulationMaterial
Enhanced EPS 70E
MovementJointsAccessories
n/a
MovementJointsFormWith
WBS Powder Coated Galvanized Steel Movement Joint Bead,WBS Powder Coated Galvanized Steel Stop Bead
MovementJointsSealant
Compriband sealing tape must be installed between the insulation boards
OzoneDepletionPotentialODP
Zero
Preparation
n/a
ProtectiveCoating
n/a
ReactionToFireClassification
Class B-s1, d0 to BS EN 13501-1:2002
Recyclability
n/a
RecycledContent
n/a
RenderApplication
n/a
RenderCarrierOrReinforcementFixings
TKE Range ȓ Steel Frame,R-UCF Range ȓ Timber Frame
RenderCarrierOrReinforcementMaterial
WBS Alkali-resistant scrim cloth incorporated into scrim adhesive
RenderCarrierOrReinforcementMeshSize
50 m² (roll)
RenderMaterial
WBS Polymer Cement Dashing Mortar,WBS Mineral Aggregate Spar Dash
SamplesRequired
Approved samples required
SupportRailsAndBracketsBracketFixings
LS 5.5 (steel frame),R-QCP (timber frame)
SupportRailsAndBracketsMaterial
15 mm RagRail Cavity Spacer Rails,25 mm RagRail Cavity Spacer Rails,25 mm Timber Battens
SurfaceSpreadOfFlame
Flame Retardant Grade
SystemAccessories
Not required,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,Corner mesh profiles,Expansion joint profiles
SystemCompletion
Inspection, documentation, OandM manuals and data sheets
SystemPerformance
Thermal Performance,Strength and Stability,System Tested to BS EN 13501-1,Risk of Condensation,Durability,Further Information
ThermalConductivity
n/a
ThirdPartyCertification
NHBC

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