A suspended wooden ground floor is detached from the ground with a ventilated creeping space below. Insulation used in the suspended wooden ground floor, for instance sawdust, moss, straw etc. usually settle in the course of time leading to a gap between floor and insulation. Cold air is sucked in from the outside and consequently the floor is uncomfortably cold.
Often the floor structure has a rather poor air-tightness and draught considerably increases its coldness. Additional insulation brings clear energy saving and living comfort. The insulation is easy to upgrade by taking out so much of the old sawdust insulation as to allow minimum 200 mm fire safe PAROC stone wool into the floor structure. For this application PAROC flexible slab is an appropriate product.
Work description:
a. Remove the old floor material and take out the required amount of old insulation. Even out the remaining stuff. If you take out all insulation it is easy to inspect the condition of the bottom wind protection at the same time.
b. Install stone wool insulation into the old floor frame structure completely filling the reserved space. The slab edges have to be pressed tightly against the wall thermal insulation. Select a somewhat over-thick insulation which is tightly compressed under the floor material. Avoid using granulated or blowing wool in floors due to their compression properties.
c. Fix vapour/air barriers with a minimum 100 mm overlap. Seal the seams with sealing tape and install tightly against surrounding walls.
d. Install floor material. |
