Uniform Thickness
and Cut-to-fall
S AND B EPS
ROOF BOARDS
PRODUCT
INFORMATION
We manufacture a wide range of roofing insulation products to meet the various required applications. We work in conjunction with roof engineers and design teams to offer the complete design and supply package.
The main consideration for a specifier is to decide which weatherproof finish is required and then build up a compatible system to accommodate this, coupled with the need to take into account the effect of heat on the construction both during construction and after completion.
Other important issues involve the selection of a compatible adhesive, sealant and or mechanical fixing to bond the weatherproof membrane plus the control of water vapour.
S and B EPS offer a wide range of systems that are available in a wide range of densities and thicknesses, with a square edge, shiplap or tongue and grooved edge detail.
Cut-to-fall insulation offers the ideal solution to refurbishment and ponding problems on existing buildings. Uniform thickness boards are suitable for roofs which have an existing fall incorporated and are unaffected by bacteria, fungi or moulds and maintain their thermal efficiency throughout the life of the building.

COMPATIBILITY
S and B EPS roof insulation can be adapted to suit a wide range of applications including weatherproof roof membranes. Unlaminated expanded roof boards are suitable for use under EPDM/ butyl rubber roofing and some plastic type single layer membranes. Where the membrane is plasticised, a separating layer of fleece is required between the polystyrene and the membrane. Pre-felted boards are suitable where built up felt or high-performance roofing felts are used with mastic asphalt roofing, but care must be taken when laying in very high ambient temperatures (technical information available on request).
GRADES
S and B EPS Roof boards are available in:
Click on grade to display technical data:
Thermal Conductivity
[k] value W/mk(10°C mean)
0.038
Compress Strength
KPa Min (at 10% compressive strength)
70
Cross Breaking Strength
KPa Min
115
Safe Working Load
Kpa at 1% nominal compression
21
Vapour Diffusion
factor µl
20-40
Thermal Conductivity
[k] value W/mk(10°C mean)
0.036
Compress Strength
KPa Min (at 10% compressive strength)
100
Cross Breaking Strength
KPa Min
150
Safe Working Load
Kpa at 1% nominal compression
45
Vapour Diffusion
factor µl
30-70
Thermal Conductivity
[k] value W/mk(10°C mean)
0.035
Compress Strength
KPa Min (at 10% compressive strength)
150
Cross Breaking Strength
KPa Min
200
Safe Working Load
Kpa at 1% nominal compression
70
Vapour Diffusion
factor µl
30-70
Thermal Conductivity
[k] value W/mk(10°C mean)
0.034
Compress Strength
KPa Min (at 10% compressive strength)
200
Cross Breaking Strength
KPa Min
250
Safe Working Load
Kpa at 1% nominal compression
90
Vapour Diffusion
factor µl
40-100
Thermal Conductivity
[k] value W/mk(10°C mean)
0.033
Compress Strength
KPa Min (at 10% compressive strength)
250
Cross Breaking Strength
KPa Min
350
Safe Working Load
Kpa at 1% nominal compression
100
Vapour Diffusion
factor µl
40-100
Thermal Conductivity
[k] value W/mk(10°C mean)
0.033
Compress Strength
KPa Min (at 10% compressive strength)
300
Cross Breaking Strength
KPa Min
450
Safe Working Load
Kpa at 1% nominal compression
120
Vapour Diffusion
factor µl
40-100
Thermal Conductivity
[k] value W/mk(10°C mean)
0.030
Compress Strength
KPa Min (at 10% compressive strength)
100
Cross Breaking Strength
KPa Min
150
Safe Working Load
Kpa at 1% nominal compression
45
Vapour Diffusion
factor µl
30-70

ADVANTAGES
- Can accept all screeds
- Grooves for ease of pipe alignment
- 1.2m x 1.2m for speed of laying
- Lightweight
- Excellent price performance ratio
- Green guide A+ rating
TECHNICAL INFORMATION
Features | Grades EPS | Lambdatherm® | ||||||
---|---|---|---|---|---|---|---|---|
EPS70E | EPS100E | EPS150E | EPS200E | EPS250E | EPS300E | ELITE | 150E | |
Thermal Conductivity [k] value W/mk (10.C mean) |
0.038 | 0.036 | 0.035 | 0.034 | 0.033 | 0.033 | 0.030 | 0.031 |
Compress Strength kPa Min (at 10% compressivew strengths) |
70 | 100 | 150 | 200 | 250 | 300 | 100 | 150 |
Cross Breaking Strength kPa Min |
115 | 150 | 200 | 250 | 350 | 450 | 150 | 200 |
Safe Working Load kPa at 1% nominal compression |
21 | 45 | 70 | 90 | 100 | 120 | 45 | 70 |
Vapour Diffusion Resistance factor µ1 |
20-40 | 30-70 | 30-70 | 40-100 | 40-100 | 40-100 | 30-70 | 30-70 |
Vapour Permeability omg [pa.h.m] |
0.015 to 0.030 | 0.009 to 0.020 | 0.009 to 0.020 | 0.006 to 0.015 | 0.006 to 0.015 | 0.007 to 0.018 | 0.009 to 0.020 | 0.009 to 0.020 |
COLOUR GUIDE
Identification / colour coding of products manufactured to BSEN 13163 |
||||||||
---|---|---|---|---|---|---|---|---|
EPS 70E |
2 x brown stripes & 1 red stripe |
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EPS 100E |
1 x black stripe & 1 red stripe |
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EPS 120E |
2 x green stripes & 1 red stripe |
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EPS 150E |
1 x yellow stripe & 1 red stripe |
|||||||
EPS 200E |
2 x black stripes & 1 red stripe |
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EPS 250E |
1 violet stripe & 1 red stripe |
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EPS 300E |
1 violet stripe & 1 red stripe |
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EPS 500E |
2 x black stripes & 1 red stripe |
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