Home > Companies > Styrene Packaging & Insulation > Plustherm Enhanced Grey EPS

Stylite Plustherm insulation contains graphite which considerably increases insulation performance and the reaction to fire rating. It can be used in a wide variety of floor applications, both for domestic and industrial use, to satisfy the current Building Regulations and U-value requirements. The most common applications are below a concrete slab, a screed or particleboard floor finish. The insulation boards are available in a range of grades and sizes to suit project requirements.

EPS is compatible with cement, concrete, brick, masonry, mortars, plaster and bitumen based damp-proof membranes. It must not be used in contact with membranes or other building materials containing solvents. Stylite expanded polystyrene insulation is compatible with all types of screed.

EPS is rot proof and durable, and will remain an effective 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.
  • Can be used on all floor types.
  • Enhanced performance.
  • Use above or below DPM.
  • Use in commercial and residential property.
  • 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.

Standard product features

Size (l x w):

2400 x 1200 mm.

Compressive strength:

- At 10% to EN 826:

  • Plustherm 70: 70 kPa.
  • Plustherm 100: 100 kPa.
  • Plustherm 150: 150 kPa.

- At 1% to EN 13163:

  • Plustherm 70: 21 kPa.
  • Plustherm 100: 30 kPa.
  • Plustherm 150: 45 kPa.

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

0.030 W/m·K.

Reaction to fire to EN 13051-1:

Euro class E.

Bending strength to EN 12089:

  • Plustherm 70: 115 kPa.
  • Plustherm 100: 150 kPa.
  • Plustherm 150: 200 kPa.

Water absorption to EN 13163:

  • Plustherm 70: 0.015–0.030 (mg Pa-1 h-1 m-1).
  • Plustherm 100 and 150: 0.009–0.020 (mg Pa-1 h-1 m-1).

Dimensional stability to EN 1603:

DS (N) 5.

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



Styrene Packaging & Insulation


+44 (0)1274 691777

Product reference

Plustherm Enhanced Grey EPS


[Plustherm 70]
[Plustherm 100]
[Plustherm 150]


[ ______ ]

Manufacturer details

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