Internal insultaion

CLAYTEC HFD internal

Wood fibre insulation board for interior insulation of timber-frame houses and all other historical buildings. CLAYTEC HFD interior insulation boards are glued locally in a clay plaster levelling course or fixed with clay adhesive and reinforcing mortar. The soft boards decouple deformations in the construction from the interior plaster. They are inexpensive and suitable for many types of wall.

Field of application
Interior insulation for timber-frame and solid masonry exterior walls.

Softwood FSC© certified, white glue to bond the layers.

Material parameters
Bulk density approx. 160 kg/m3, compressive strength ≥ 50 kPa, thermal conductivity 0.040 W/mK, sd thickness = 40 0.20 m /thickness = 60 0.30 m, fire behaviour according to DIN EN 13501-1: E

Composition and dimensions
Insulation board with tongue-and-groove. Width = 0.40 m, length = 1.02 m (covered area 0.39 x 1.01 m), thickness = 40, 60, 80 mm.

Supply form
Stacked and shrink-wrapped on pallets.

Store in a dry and well-ventilated place, not under plastic. Protect carefully against moisture and condensation during transport and storage.

Amount required
Approx. 2.6 boards/m2. When calculating amount required, allow about 10% extra for wastage etc.

Levelling courses thickness > 10 mm must be left to dry before installing the wood fibre insulation boards. The boards can be cut to size with a jigsaw or handheld circular saw. The lowest row of boards must be fitted with a gap to the floor. They are set using clay adhesive (CLAYTEC 13.555) on one side with 10mm notched filler or on both sides with 5-6 mm notched filler. Alternatively, they can be set in a malleable bed of mortar thickness = ≤ 10 mm of mineral clay plaster 16 or clay undercoat plaster.
The side on which the product name is not printed must face the room. The boards are pressed firmly into place. Ensure all-over contact with the substrate with as few defects as possible. The boards are fastened to wood substrates with screws and to solid substrates with rawlplugs. Insulating plates are used in each case. Anchorage depth in wood ≥ 40 mm, in solid building materials ≥ 60 mm. Each board is fastened at at least two points.


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