BBA Agrément Certificate
Tile backer board for external use.
Suitable for use insulating, waterproofing and fixing ceramic and stone tiling and brick slips to external walls.
Waterproof, thermally insulating tile backer board for external use providing an effective decoupling layer between the tiled surface and the substructure. This helps to prevent tiles and grout from cracking due to horizontal movement in the floor and allows heavy weights to be safely and securely fixed to walls.
An internal board is available, specified separately.
Features and benefits:
Boards should be stored flat and covered with scrim/ reinforcing tape. For fitting instructions onto different types of substrate, consult manufacturer's literature.
Extruded polystyrene (XPS)
1250 x 600 mm
2500 x 600 mm
M40/27 Intermediate substrate
M40/470 Intermediate substrate
To BS EN 13164.
Third party product certification
BBA Certificate: 09/4687.
Compressive strength (minimum) at 10% compression
Thermal conductivity (maximum)
Thermal resistance (R-Value): 0.35 m²K/W. Board weight: 2.8 kg.
Thermal resistance (R-Value): 0.56 m²K/W. Board weight: 3.1 kg.
Thermal resistance (R-Value): 0.83 m²K/W. Board weight: 3.4 kg.
Thermal resistance (R-Value): 1.11 m²K/W. Board weight: 4 kg.
Thermal resistance (R-Value): 1.39 m²K/W. Board weight: 4.2 kg.
Thermal resistance (R-Value): 1.67 m²K/W. Board weight: 4.5 kg.
Face size (length x width)
1250 mm (±5 mm) x 600 mm (±2 mm).
2500 mm (±5 mm) x 600 mm (±2 mm).
External walls. For concrete block and brick substrates (flat). To be fixed with adhesive.
External walls. For aircrete block walls. To be fixed with adhesive or mechanically.
External walls. For rendered walls. To be fixed with adhesive or mechanically.
External walls. For intermediate plywood layers on timber/ metal frames. To be mechanically fixed.
Density (to DIN 53420)
Water absorption (two day immersion, to EN 12087)
<1% by volume.
Water absorption (capillary, to DIN 53428)
Coefficient of linear expansion (to ASTM E-831)
Water vapour diffusion factor (to EN 12086)
Ozone depleting potential (ODP)
Global warming potential (GWP)
Impact sound reduction (to BS EN 140-8)
Maximum tile loading weight
>100 kg/m² (dependent on adhesive and wall type).
Flexural strength (to ASTM C203)
Water vapour permeability (to EN 12086)
Coefficient of linear expansion (to ASTM D-696)
30 x 10^-6 K^-1.