Multiboard (Internal)
BBA Agrément Certificate
Certificate type
Tile backer board for internal use.
Can be used to insulate and waterproof internal walls, floors and ceilings. Thicker units can be used to construct shelving units and bathroom furniture.
Waterproof, thermally insulating tile backer board for internal use. An external board is available, specified separately.
Features and benefits:
- Lightweight.
- Provides 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.
- The surface allows heavy weights to be safely and securely fixed to walls.
- Impermeable to water and acts as a moisture barrier; therefore, can be used in areas prone to moisture, such as kitchens and bathrooms.
- Thermal insulation is unaffected by various temperatures (including freezing).
- The cementitious surface is resistant to heat and the chemicals in the sheathing around electric underfloor heating elements, making it safe to use with these types of systems.
- Can easily be cut in straight lines.
- Provides enhanced tile adhesion.
- Can be tiled over or plaster finished; therefore, acting as an alternative to laminated thermal plasterboard.
- Load bearing capacity exceeds 100 kg/m² on walls, and 40 kg/m² on floors.
- Boards can be aligned horizontally or vertically.
- Does not contain any hazardous substances.
- Manufactured in accordance with ISO 9001 Quality Management Systems and BS EN 5385-2, and CE marked to EN 13164.
Boards should be stored flat and should be covered with scrim/ reinforcing tape. For fitting instructions onto different types of substrate, consult manufacturer's literature.
Application:
Can be used to insulate and waterproof internal walls, floors and ceilings. Thicker units can be used to construct shelving units and bathroom furniture.
Features | Lightweight, impermeable to water, resistant to heat and chemicals |
Material | Extruded polystyrene (XPS) |
Size | 1250 x 600 mm, 2500 x 600 mm |
Uniclass 2015 | |
CAWS | M40/27 Intermediate substrate M40/470 Intermediate substrate |
Product Reference | IF1-4-60Internal floors. For concrete floors. To be fixed with adhesive. IF2-4-60Internal floors. For plywood sheet flooring. To be fixed with adhesive or mechanically. IF3-4-60Internal floors. For chipboard/ oriented strand board (OSB) flooring panels. To be fixed with adhesive or mechanically. IF4-10-60Internal floors. For traditional floorboards. To be fixed with adhesive. IF5-6-60Internal floors. For raised access flooring. To be fixed with adhesive. IW1-4-60Internal walls. For concrete block and brick substrates (flat). To be fixed with adhesive. IW2-12-60Internal walls. For concrete block and brick substrates (uneven). To be fixed mechanically. IW3-4-60Internal walls. For aircrete block walls. Fixing with adhesive and mechanically. IW4-4-10Internal walls. For plastered walls. Fixing with adhesive and mechanically. IW5-10-12Internal walls. For timber/ metal frames, with 300/ 400 mm centres. IW5-20-60Internal walls. For timber/ metal frames, with 600 mm centres. IW6-4-60Internal walls. For intermediate plywood layers on a timber/ metal frame. To be fixed with adhesive. IW6-12-60Internal walls. For intermediate plywood layers on a timber/ metal frame. To be fixed mechanically. IW7-10-12Internal walls. For intermediate plasterboard layers on a timber/ metal frame. To be fixed mechanically. IW7-20-60Internal walls. For intermediate plasterboard layers on a timber/ metal frame. To be fixed mechanically. |
Third party product certification | BBA Certificate: 09/4687 |
Fire performance | Euroclass E |
Compressive strength (minimum) at 10% compression | >400 kPa |
Thermal conductivity (maximum) | 0.034 W/m·K |
Thickness | 4 mmThermal resistance (R-Value): 0.11 m²K/W. Board weight: 2.3 kg. 6 mmThermal resistance (R-Value): 0.17 m²K/W. Board weight: 2.4 kg. 10 mmThermal resistance (R-Value): 0.28 m²K/W. Board weight: 2.7 kg. 12.5 mmThermal resistance (R-Value): 0.35 m²K/W. Board weight: 2.8 kg. 20 mmThermal resistance (R-Value): 0.56 m²K/W. Board weight: 3.1 kg. 30 mmThermal resistance (R-Value): 0.83 m²K/W. Board weight: 3.4 kg. 40 mmThermal resistance (R-Value): 1.11 m²K/W. Board weight: 4 kg. 50 mmThermal resistance (R-Value): 1.39 m²K/W. Board weight: 4.2 kg. 60 mmThermal 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) |
Density (to DIN 53420) | 36 kg/m³ |
Water absorption (two day immersion, to EN 12087) | <1% by volume |
Water absorption (capillary, to DIN 53428) | 0 |
Coefficient of linear expansion (to ASTM E-831) | 0.07 mm/mK |
Water vapour diffusion factor (to EN 12086) | 110–225 |
Ozone depleting potential (ODP) | 0 |
Global warming potential (GWP) | 0.29 |
Impact sound reduction (to BS EN 140-8) | 21 dB |
Maximum tile loading weight | >100 kg/m² (dependent on adhesive and wall type) |
Flexural strength (to ASTM C203) | >200 kPa |
Water vapour permeability (to EN 12086) | 3.2 m |
Coefficient of linear expansion (to ASTM D-696) | 30 x 10^-6 K^-1 |
Standard product features | Features: Lightweight, impermeable to water, resistant to heat and chemicals. Material: Extruded polystyrene (XPS). Size: 1250 x 600 mm, 2500 x 600 mm. - Multiboard (generally):
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- Certificate: 09/4687