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Stylite Inverted Flat Roof Insulation Boards are designed for use with inverted flat roof applications. Suitable for single ply, felt or a full ballasted roof. Available in a wide range of compressive densities. Designed with a 15 mm overlap which helps to reduce the chance of wind uplift, minimizes cold bridging and protects board joints.

Expanded polystyrene is compatible with most chemicals and materials. It is rot proof and durable, and will remain effective as an insulation for the life of the construction; it is not affected by bacteria, moulds or fungi and will not provide nutrient value for insects or vermin.

Features and benefits:

  • Lambda from 0.030 W/m·K.
  • With overlap edge profile.
  • Lightweight and applicable to any roofing substrate.
  • Quick and easy installation on single ply/ felt, ballasted or green roofs.
  • Minimal water absorption and permeability.
  • 100% recyclable.
  • No HFC’s, CFC’s or HCFC’s.
  • Global Warming Potential (GWP) and an Ozone Depletion Potential (ODP) of zero.
  • BRE green guide rating: A+.
  • CE marked.

Related literature

The following content references this product:

Standard product features

Size (l x w):

600 x 600 mm.

Compressive strength:

- At 10% to EN 826:

  • Plustherm EPS 150 and White EPS 150: 150 kPa.
  • Plustherm EPS 200 and White EPS 200: 200 kPa.

- At 1% to EN 13163:

  • Plustherm EPS 150 and White EPS 150: 45 kPa.
  • Plustherm EPS 200 and White EPS 200: 60 kPa.

Thermal conductivity (Lambda 90/90) to EN 13163:

  • Plustherm EPS 150 and White EPS 150: 0.034 W/m·K.
  • Plustherm EPS 200 and White EPS 200: 0.030 W/m·K.

Reaction to fire to EN 13051-1:

Euro class E.

Bending strength to EN 12089:

  • Plustherm EPS 150 and White EPS 150: 200 kPa.
  • Plustherm EPS 200 and White EPS 200: 250 kPa.

Water absorption to EN 13163:

  • Plustherm EPS 150 and White EPS 150: 0.009–0.020 (mg Pa-1 h-1 m-1).
  • Plustherm EPS 200 and White EPS 200: 0.006–0.015 (mg Pa-1 h-1 m-1).

Dimensional stability to EN 1603:

DS (N) 5.

Options

Type:

All grades up to EPS 350 are available; consult manufacturer for details.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-65/380 Expanded polystyrene (EPS) board

Product specification

An important note about specifying

Manufacturer

Name:

Styrene Packaging & Insulation Ltd

Tel:

+44 (0)1274 691777

Product reference

Flat Inverted Roofing Insulation

Type

[Plustherm EPS 150]
[Plustherm EPS 200]
[White EPS 150]
[White EPS 200]

Thickness

[ ______ ]

Manufacturer details

Morley Carr Road,
Low Moor,
Bradford,
West Yorkshire, BD12 0RA
Tel +44 (0)1274 691777
Fax +44 (0)1274 693832
NBS Plus