Design, Manufacture and Supply of Acoustic, Access, and Sports Floor Systems

Duralite Gridboard Insulation UFH S9 – EPS100



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Duralite Gridboard Insulation -EPS100

Duralite gridboard insulation is designed for use with under floor heating systems. The boards consist of a grid-patterned layer of woven polypropylene laminated to the top of each board which provides a grid system at 50mm centres allowing quick and easy installation of pipes. The grid layer also acts as a vapour protection layer.

EPS100 (heavy density) grid insulation boards can be used in a variety of floor applications, both domestic and industrial, to satisfy the current building regulations and U-value requirements. The most common applications are below a concrete slab, a screed or a timber raised floor.

The insulation boards are a standard 2400 x 1200mm. They are available in a range of thicknesses to suit your individual requirements. The boards are very easy to install and do not require any specialist tools. They are available in packs.


Board Thickness Number of boards per pack Pack coverage
25mm 12 34.56m2
50mm 6 17.28m2
75mm 4 11.52m2
100mm 3 8.64m2



  • Light weight, clean and easy to handle
  • Allows for fast and easy laying of under floor heating pipes
  • Excellent insulating medium
  • The grid layer acts as a vapour control layer
  • Highly cost effective
  • Minimal water absorption & permeability
  • 100% recyclable
  • BBA certified – 04/4102
  • BRE Green Guide Rating A+


Estimated delivery time 3 weeks!

Additional information

Weight 10 kg

2400 x 1200 x 25mm, 2400 x 1200 x 50mm, 2400 x 1200 x 75mm, 2400 x 1200 x100mm

Pack Quantity

25mm – 12 boards, 50mm – 6 boards, 75mm – 4 boards, 100mm – 3 boards


Expanded polystyrene board with a grid-patterned layer of woven polypropylene

Edge profile

Plain Square edged

Thermal Conductivity


Compressive strength

100kPa at 10% compression


Domestic, industrial

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