This is known as "built-in" insulation since the Biofib’ batts are placed between the wooden uprights in one (or two) layer(s). When placing a double layer with "staggered joints", it is necessary to place, perpendicular to the supporting uprights, a row of cleats, with their depth depending on the thickness of the second layer of insulation.
Store rolls and batts in their original packaging, protected from rain and direct sunlight.
Cut the insulation to the required width between supports, with an excess of 2 cm, and place the insulation under gentle compression ("spring effect") to ensure perfect contact with the uprights.
To ensure continuous insulation, take special care when sealing the joints between walls (wall / floor / slope) and checking that the strips are in perfect contact.
Ensure the maximum seal of the insulation by installing an offset, continuous vapour barrier on the inside (hot) and a roof-boarding screen that is pervious to water vapour on the outside (cold).
Install a finishing facing with maximal fire rating (mandatory).