Square edge internal wall insulation – Beltermo Room

Product overview

Where is it used?

• Beltermo Room wood fibre boards are square edged and used for internal solid wall insulation or for direct fixing to boarded timber frames.
• Beltermo Room can also be used to line CLT/LVL panelling and provide a plasterable surface.
• Beltermo Room boards can also be used for insulating solid floors.

How is it used?

• Beltermo Room boards are always laid in a landscape orientation.
• As internal solid wall insulation Beltermo Room boards should start at or above the external ground level and laid in a brick bond pattern with vertical joints overlapping by at least 300mm. They are not suitable for below ground use.
• Apply a 5-10mm layer of Baumit Viton Fein plaster direct to the wall and comb with a knotched trowel to ensure an even thickness.
• Where the surface is much rougher, flush-up the surface of the wall with either a lime plaster or the Baumit Viton Fein before applying the boards.
• Once the boards are in the correct position they can be fixed with 5-6 masonry fixings, spaced evenly across the surface of the board.
• Once the clay backing plaster has stiffened (usually 24 hours later) the UdiMULTIGRUND vapour regulating plaster can be applied to the surface. Apply a 4-5mm coat, incorporating the UdiREINFORCEMENT mesh and finish flat.
• After 4-5 days the surface can be skimmed with a lime or clay skimming plaster.
• For detailed guidance on installing and direct plastering the boards, please see our installation guide – Internal wall insulation with lime plaster finish
• For detailed guidance on installing and using a plasterboard finish, please see our installation guide – Internal wall insulation with plasterboard finish

How much will you need?

• Each Beltermo Room Insulation board is 1250 x 580mm or 0.725m2.
• We stock boards in 40, 60 and 100mm thicknesses but other thickness are available on request.
• Beltermo Room is available by the board or in full pallets with a 10% discount over the single board price