Floors
Solid Ground Floor InsulationSolid Ground Floor Insulation
Suspended Timber Floor Insulation
Suspended Timber Floor Insulation
Suspended Timber Floor Insulation
  Floors - Suspended Timber Ground Floor Insulation Over Floor Boards


INTRODUCTION
For suspended timber floors over joists we recommend the use of Kingspan Thermafloor TF73 zero ODP composite floor insulation. A separate vapour control layer is not required and the boards promote quick response heating. Ideal for both newbuild and refurbishment.

Figure 1
Suspended Timber Ground Floor Insulation Over Floor Boards
zero ODP
PRODUCT DATA
 ACHIEVING U–VALUES
Kingspan Thermafloor TF73 zero ODP
Board Size 2.4 x 0.6
Insulant Thickness(mm) Refer to local distributor or Kingspan Insulation price list for current stock and non-stock sizes.
Facings 18mm T & G chipboard
Core CFC/HCFC - free
rigid extruded polystyrene

 

U-Values
1 Insulant thickness only, does not include chipboard.

2 The l-value quoted is based on the procedures for the determination of the aged values of thermal resistance and thermal conductivity, laid down by the harmonised European standard BS EN 13164, using so called 90/90 principles. Comparison with alternative products may not be appropriate unless the same procedures have been followed.
FIXING DETAILS
  • Lay the boards at right angles to the floor joists at 400 mm centres.


  • Ensure cross noggins are provided for unsupported board edges overhanging a joist.


  • Boards should be fixed with nails / screws at 400 centres into all joists, providing a 25 mm penetration into the 50 mm wide joist.


  • Use a minimum of 28 fixings per board. Do not nail within 25 mm of board corners.


  • Leave adequate expansion gaps so the boards do not buckle if the chipboard absorbs atmospheric moisture and expands.


  • Ensure the building is weather tight before fixing floors incorporating this product.


  • Cutting should be carried out using a fine toothed saw.