Ventilation is required in the same way as a suspended timber floor.
Ventilation concrete floor.
Dpm on top of the concrete will help if the damp is rising through the concrete subfloor.
The building regulations approved document c states suspended timber floors and suspended concrete floors including block and beam have a provision for ventilation on two opposing external walls of not less than 1500mm per metre run of external wall or 500mm per metre of floor area whichever works out to give the greater amount of ventilation.
Moisture as you would guess is the underlying cause of sweating on concrete floor slabs.
Most of the heat rises to the ceiling.
This usually happens when concrete slabs and the other materials that sweat reach dew point temperature.
Be best to treat the floor joists timbers to stop further rot.
Your property should have either a solid usually concrete or a timber floor.
But to make the most of the thermal mass benefits of concrete the slab and foundation should be insulated from both the ground and the air.
The manufacturers may well work out the size of the concrete beams and provide the structural calculations.
Cross flow ventilation was traditionally achieved by placing sleeper walls see figure 2 at intervals throughout the sub floor.
Usually warm moist air and relative humidity enter the structure through the several openings windows doorways and vents.
In simple terms an air brick is simply a brick with holes in it.
The recommended minimum area of ventilation required for under a suspended timber floor is 1500mm 2 for every metre of perimeter of the structure.
Otherwise a structural engineer can also provide this service.
Check out the podcast episode and please feel free to leave you comments or questions.
With radiant floor heating in concrete the heat is concentrated at the floor making you feel comfortable at a lower thermostat setting and will eventually rise to heat your entire house.
It won t help much if there is a lack of ventilation which is causing the problems condensation etc.
Paroc grs 20 supporting structure.
Hollow core slab ventilated space.
If the floor is wood timber there should be a void large space.
Warm heat distributed with forced hot air systems is uneven.
A concrete floor is an excellent solution for a high performing home.
Another question we are regularly asked is what does my mortgage valuer surveyor mean by improve the sub floor ventilation.
Ventilated concrete floors flooring material reinforced concrete floor slab casting protection thermal insulation.
Wrights ventilated concrete floor is designed to cater for a variety of drying requirements from woodchip to arable crops.
