100mm Kingspan Kooltherm K103 Floorboard Insulation 2.4m x 1.2m - 2.88m2 per board
100mm Kingspan Kooltherm K103 Floorboard is a floor insulation board sold here as single sheets, each covering 2.88m². At 100mm it gives the highest resistance available from a single K103 board, and buying by the sheet means the order can follow the floor area exactly, which suits part floors, irregular bays or topping up where a full pack would leave boards spare.
The board carries a thermal resistance of 5.25 m²K/W, drawn from a fibre-free rigid thermoset phenolic core with a thermal conductivity of 0.019 W/mK. It measures 2400mm x 1200mm, has a square edge and is faced on both sides with glass tissue bonded during manufacture, and holds a compressive strength of 120 kPa to BS EN 826:2013, so it copes with the load of a screed or slab laid over it.
What 100mm offers is the range's strongest single-board figure. At 5.25 m²K/W it does in one layer what a thinner board would only reach by being doubled up, so the floor gets a single set of joints to butt and seal rather than two offset layers. Where the build-up depth allows for 100mm, that keeps the lay-up to one pass and the insulated layer simpler.
100mm Kingspan Kooltherm K103 is used in beam and dense block, suspended timber and solid concrete ground floors, laid over a damp proof membrane and installed in line with the latest Kingspan guidance and the project specification. In suspended timber floors the boards drop between the joists onto battens, saddle clips or nails rather than being fixed over them, and the board works with underfloor heating. Bought as single sheets, the board count follows the floor exactly, with no leftover full pack to account for.
Key Benefits of Kingspan Kooltherm K103:
- 100mm rigid thermoset phenolic floor board with a fibre-free insulation core.
- Thermal conductivity of 0.019 W/mK.
- Thermal resistance (R-value) of 5.25 m²K/W at 100mm, the highest from a single K103 board.
- Compressive strength of 120 kPa to BS EN 826:2013, for use beneath a floor screed or slab.
- Square edge, faced both sides with glass tissue bonded during manufacture.
- Board measures 2400mm x 1200mm, covering 2.88m² per sheet.
- Sold as single sheets, so you order the exact board count the floor needs.
- Suitable for beam and dense block, suspended timber and solid concrete ground floors.
- Compatible with underfloor heating.
- Reaction to fire classification of Euroclass C-s2,d0 to BS EN 13501-1:2018.
Good to know:
- The 5.25 m²K/W figure is the board's thermal resistance, not the finished floor U-value; check the U-value against the full build-up before ordering.
- In suspended timber floors the boards drop between the joists onto battens, saddle clips or nails, rather than being fixed over the joists.
- Lay the boards over a damp proof membrane of at least 1200 gauge, keeping the insulation clear of the subsoil.
- K103 resists the passage of water vapour but does not act as a vapour control layer; under a screed, add a separate lapped and taped polythene sheet as the VCL.
- For thicknesses beyond 100mm the boards can be doubled up in a break-bonded pattern with the joints staggered between layers.
Covering a whole floor? The same 100mm board is sold in packs here for bulk ordering.
For a floor working to a demanding U-value where the depth is there for 100mm, single sheets let you buy the exact board count the job calls for and nothing spare.
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100mm Kingspan Kooltherm K103 Floorboard Insulation 2.4m x 1.2m - 2.88m2 per board
100mm Kingspan Kooltherm K103 Floorboard Insulation 2.4m x 1.2m - 2.88m2 per board
100mm Kingspan Kooltherm K103 Floorboard is a floor insulation board sold here as single sheets, each covering 2.88m². At 100mm it gives the highest resistance available from a single K103 board, and buying by the sheet means the order can follow the floor area exactly, which suits part floors, irregular bays or topping up where a full pack would leave boards spare.
The board carries a thermal resistance of 5.25 m²K/W, drawn from a fibre-free rigid thermoset phenolic core with a thermal conductivity of 0.019 W/mK. It measures 2400mm x 1200mm, has a square edge and is faced on both sides with glass tissue bonded during manufacture, and holds a compressive strength of 120 kPa to BS EN 826:2013, so it copes with the load of a screed or slab laid over it.
What 100mm offers is the range's strongest single-board figure. At 5.25 m²K/W it does in one layer what a thinner board would only reach by being doubled up, so the floor gets a single set of joints to butt and seal rather than two offset layers. Where the build-up depth allows for 100mm, that keeps the lay-up to one pass and the insulated layer simpler.
100mm Kingspan Kooltherm K103 is used in beam and dense block, suspended timber and solid concrete ground floors, laid over a damp proof membrane and installed in line with the latest Kingspan guidance and the project specification. In suspended timber floors the boards drop between the joists onto battens, saddle clips or nails rather than being fixed over them, and the board works with underfloor heating. Bought as single sheets, the board count follows the floor exactly, with no leftover full pack to account for.
Key Benefits of Kingspan Kooltherm K103:
- 100mm rigid thermoset phenolic floor board with a fibre-free insulation core.
- Thermal conductivity of 0.019 W/mK.
- Thermal resistance (R-value) of 5.25 m²K/W at 100mm, the highest from a single K103 board.
- Compressive strength of 120 kPa to BS EN 826:2013, for use beneath a floor screed or slab.
- Square edge, faced both sides with glass tissue bonded during manufacture.
- Board measures 2400mm x 1200mm, covering 2.88m² per sheet.
- Sold as single sheets, so you order the exact board count the floor needs.
- Suitable for beam and dense block, suspended timber and solid concrete ground floors.
- Compatible with underfloor heating.
- Reaction to fire classification of Euroclass C-s2,d0 to BS EN 13501-1:2018.
Good to know:
- The 5.25 m²K/W figure is the board's thermal resistance, not the finished floor U-value; check the U-value against the full build-up before ordering.
- In suspended timber floors the boards drop between the joists onto battens, saddle clips or nails, rather than being fixed over the joists.
- Lay the boards over a damp proof membrane of at least 1200 gauge, keeping the insulation clear of the subsoil.
- K103 resists the passage of water vapour but does not act as a vapour control layer; under a screed, add a separate lapped and taped polythene sheet as the VCL.
- For thicknesses beyond 100mm the boards can be doubled up in a break-bonded pattern with the joints staggered between layers.
Covering a whole floor? The same 100mm board is sold in packs here for bulk ordering.
For a floor working to a demanding U-value where the depth is there for 100mm, single sheets let you buy the exact board count the job calls for and nothing spare.
Original: $124.20
-65%$124.20
$43.47Product Information
Product Information
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Description
100mm Kingspan Kooltherm K103 Floorboard is a floor insulation board sold here as single sheets, each covering 2.88m². At 100mm it gives the highest resistance available from a single K103 board, and buying by the sheet means the order can follow the floor area exactly, which suits part floors, irregular bays or topping up where a full pack would leave boards spare.
The board carries a thermal resistance of 5.25 m²K/W, drawn from a fibre-free rigid thermoset phenolic core with a thermal conductivity of 0.019 W/mK. It measures 2400mm x 1200mm, has a square edge and is faced on both sides with glass tissue bonded during manufacture, and holds a compressive strength of 120 kPa to BS EN 826:2013, so it copes with the load of a screed or slab laid over it.
What 100mm offers is the range's strongest single-board figure. At 5.25 m²K/W it does in one layer what a thinner board would only reach by being doubled up, so the floor gets a single set of joints to butt and seal rather than two offset layers. Where the build-up depth allows for 100mm, that keeps the lay-up to one pass and the insulated layer simpler.
100mm Kingspan Kooltherm K103 is used in beam and dense block, suspended timber and solid concrete ground floors, laid over a damp proof membrane and installed in line with the latest Kingspan guidance and the project specification. In suspended timber floors the boards drop between the joists onto battens, saddle clips or nails rather than being fixed over them, and the board works with underfloor heating. Bought as single sheets, the board count follows the floor exactly, with no leftover full pack to account for.
Key Benefits of Kingspan Kooltherm K103:
- 100mm rigid thermoset phenolic floor board with a fibre-free insulation core.
- Thermal conductivity of 0.019 W/mK.
- Thermal resistance (R-value) of 5.25 m²K/W at 100mm, the highest from a single K103 board.
- Compressive strength of 120 kPa to BS EN 826:2013, for use beneath a floor screed or slab.
- Square edge, faced both sides with glass tissue bonded during manufacture.
- Board measures 2400mm x 1200mm, covering 2.88m² per sheet.
- Sold as single sheets, so you order the exact board count the floor needs.
- Suitable for beam and dense block, suspended timber and solid concrete ground floors.
- Compatible with underfloor heating.
- Reaction to fire classification of Euroclass C-s2,d0 to BS EN 13501-1:2018.
Good to know:
- The 5.25 m²K/W figure is the board's thermal resistance, not the finished floor U-value; check the U-value against the full build-up before ordering.
- In suspended timber floors the boards drop between the joists onto battens, saddle clips or nails, rather than being fixed over the joists.
- Lay the boards over a damp proof membrane of at least 1200 gauge, keeping the insulation clear of the subsoil.
- K103 resists the passage of water vapour but does not act as a vapour control layer; under a screed, add a separate lapped and taped polythene sheet as the VCL.
- For thicknesses beyond 100mm the boards can be doubled up in a break-bonded pattern with the joints staggered between layers.
Covering a whole floor? The same 100mm board is sold in packs here for bulk ordering.
For a floor working to a demanding U-value where the depth is there for 100mm, single sheets let you buy the exact board count the job calls for and nothing spare.
















