webertherm XP roughcast system (EPS)

Our webertherm XP systems are specially designed using a mineral one coat render (webertherm M1) which doesn't require a base coat render. This means faster and more economical application, reducing labour and scaffolding costs. The disruption to the homeowner is minimised considerably.

Suitable for application onto masonry substrates, this system uses cost effective expanded polystyrene insulation (webertherm EPS) and is finished with webertherm M1 with a traditional roughcast render finish available in 23 popular colours.

Frequently asked questions

View our frequently asked questions on external wall insulation.

Suitability:

• Suitable only for buildings under 11 metres. 
• For buildings above 11m, please see webertherm XP roughcast system (MFD).

Final façade finish:

• Finished with webertherm M1 one coat mineral render available in 23 popular colours.

Reaction to fire:

• B-s1,d0 reaction to fire classification in accordance with BS EN 13501. Extended application report on request.

Certification & requirements:

• BBA approved, scroll down for certificates.
• NSAI approved, scroll down for certificates.
• Able to satisfy PAS 2030:2019 and PAS 2035:2019 requirements.

Thermal performance:

Thermal performance for this system varies by substrate and insulation thickness, please refer to the table below or use our U-value Estimator tool for more insulation thickness options.

Please note: If more than 200mm of insulation thickness is required, please contact us for more information.

• For all substrates there may be a requirement to complete pull-out testing prior to any installation of external wall insulation systems.
• Prior to the installation of external wall insulation systems, please contact us.

Do not apply:

• If frost is forecast within 24 hours of use.
• In damp/wet conditions.
• In temperatures below 5°C or above 30°C.
• On elevations in direct sunlight or where the substrate is hot.