Inverted Roof EPS Insulation

Our new range of Inverted Roof EPS Insulation is both BBA and KIWA-certified and is available in a wide range of densities to meet the specified compression performance for applications from light traffic maintenance roofs to car parks and podiums.

An inverted roof construction places thermal insulation above the waterproof layer. This maintains the waterproof membrane at an even temperature and protects it from the damaging effects of UV radiation or the effects of the weather. The specified thermal performance of the inverted roof is achieved through the roof design and the thickness of the insulation used.

          Key Benefits

  • KIWA Certified BAR-19-098-S-A-UK
  • BBA Certified 21/5944
  • For use on flat roofs with zero pitch and slopes up to 10°
  • Resistant to the effects of freeze/thaw
  • Achieves required compressive strength
  • Supplied in 200, 300, 500, 600 and 200+ grade
  • 100% recyclable

Product Specification

BEWI supplies insulation boards in a range of grades suitable for all flat roof applications.

Inverted Roof EPS Insulation boards in 200, 300 and 200+ grades have adequate resistance to the loads associated with light maintenance traffic on roofs, and to pedestrian foot traffic on balconies and roof terraces.

Inverted Roof EPS Insulation in 500 and 600 grade meets higher loading requirements in applications such car parks and podiums.

Where paving slabs are to be placed over the insulation on spacer pads the point loads should be calculated to an equivalent uniformly distributed load (See datasheet for example).

Thermal Conductivity (W/mK)

 Grade 200 200+ 300
(W/mK) 0.033 0.031 0.033

 

Dimensions

Size 1200 x 1200mm (with 15mm rebated edges). Board coverage 1.44m²
Thickness Single thickness 50mm up to 240mm (in 5mm increments)

 

U-Values

U Value 200 Premium* THICKNESS (mm) 200 Premium+* THICKNESS (mm) 300 Premium* THICKNESS (mm) 500 Premium THICKNESS (mm) 600 Premium THICKNESS (mm)
0.25 125 120 125145 150
0.24130 125 130 150 155
0.23140 130140 155 160
0.22145 135 145 165 170
0.21150 140 150 170 175
0.20160 150 160 180 185
0.19165 155 165 190 195
0.18175 165 175 200 205
0.17185 175 185215 220
0.16195185 195225 235
0.15210 195 210 240 245
0.14225 210 225 255 265
0.13240 225 240 280 285
0.12260 245 260 300 305
0.11285 265285 325 335
0.10310 290 310 360365
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