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Groundbearing Floors
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In a groundbearing floor the ground is used to support the floor slab for the life of the building. The floor slab is formed:
- with reinforced or unreinforced concrete poured within, but separate from the external walls, which are built off separate foundations.
- as a reinforced concrete raft combining both foundation and floor.
The FLOORMATE™ insulation can be installed:
- between the slab and a board finish (Figure 28).
- between the slab and the screed (Figure 29).
- below the slab (Figure 30).
Positioning FLOORMATE insulation below the slab avoids any disruption to the construction sequence. In this position it supports the floor slab and it is essential the insulation has sufficient compressive strength: it must also be placed on a well compacted level surface to avoid uneven settlement.
Because of the difficulty of providing edge insulation to a raft foundation, FLOORMATE insulation is not normally installed below the slab in raft constructions (Figure 31).
FLOORMATE insulation is designed to give the maximum benefit in groundbearing floor construction:
- a range of compressive strengths to match loading conditions.
- resistant to ground moisture.
- thicknesses from 50mm to 100mm allow thermal performance to be matched to project requirements.
For the full physical and performance properties of FLOORMATE products see Product Data.
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