Wood fibre insulation sarking board - Beltermo Top


Beltermo Top wood fibre insulation sarking boards are:-

  • a high density, dry fibre insulation board, brilliant for keeping you warm and dry in winter.
  • great for summer heat shielding, keeping your home cool.
  • ideal for forming a warm roof which is completely vapour permeable.
  • a quick and easy way to form a weather-tight, bat friendly covering without using membranes/felt.  

Where is it used?

  • On top of your rafters, preventing thermal bridging and keeping noise out, especially for loft conversions.
  • Behind any cladding on walls on timber frames or masonry.
  • Any roofs where bats live. They get tangled in membranes!!

How do I use it?

  • The Beltermo Top wood fibre insulation sarking boards should be laid on top of the rafters and fixed in place with counter-battens. 
  • For roofing applications the first row should start at eaves level and working in rows, work your way up the roof. 
  • To reduce waste the overhang from the first row should be trimmed off and used to start the second row and so on.
  • For use behind cladding the same principles apply.  When working on masonry structures, unless the wall is very flat, timber battens should be fixed to the surface first with SteicoFlex flexible wood fibre insulation between the battens. The Beltermo Top can then be fixed to these battens, avoiding any voids behind.
  • Any cut joints or corners can be taped with Ampacoll XT tape to ensure weather-tightness. 
  • 22 and 35mm boards are not suitable for walking directly on unless supported underneath.

How much will I need?

  • The 22mm Beltermo Top wood fibre insulation sarking boards cover an area of 2390 x 590mm (1.41m2) and the 35mm Beltermo Top boards cover an area of 2475 x 575mm (1.423m2).
  • Allow 5-10% wastage depending on the complexity of the roof/facade.
  • Available by the board or by the pallet with a 10% discount over the single board price.
Product board size pallet size
22mm Beltermo Top 2390 x 590mm (1.41m2) 112 sheets, 157.92m2
35mm Beltermo Top 2475 x 575mm (1.423m2) 66 shets, 93.918m2

 



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