External Wall Insulation | Render Solutions for Existing Buildings

Leading the way upgrading and retrofitting the UK’s solid wall & non-traditional properties - PermaRock systems provide the ideal solution to reduce energy consumption in the UK's existing housing stock and improve thermally inefficient buildings. 

PermaRock is the longest established UK owned manufacturer and supplier of external wall insulation (EWI) and solid wall insulation systems, with over 30 years’ experience supplying external wall insulation systems to the energy efficiency market in the United Kingdom.

PermaRock systems have been designed for use on high and low rise buildings, for traditional and non-traditional forms of construction, including, solid wall or cavity wall, dense and no-fines concrete, brick, stone and metal, tile or timber clad structures.

Aesthetically and technically, we provide the latest innovations in render technology to enable buildings to be visually uplifted and systems are available in differing types and thicknesses of insulation to suit project-specific requirements.

High Rise Buildings 

For use on multi-storey buildings, the PermaRock Mineral Fibre external wall insulation (EWI) systems provide excellent reaction to fire performance, and systems with an A2-s1,d0 classification in accordance with BS EN 13501-1:2007+A1:2009 are suited for use on high rise and low rise buildings including those with floor levels above 18 metres above ground level. PermaRock Mineral Fibre systems with PermaRock SiliconeUltra K Finish, Mineral K FinishPermaRock Brick SlipsPermaRock Brick Effect Render and Dry Dash Finish assessed to EN 13501-1:2007 + A1:2009 and are classed A2-s1,d0.

UK Energy Efficiency Initiatives

Our systems are certificated through the Building Research Establishment (BRE Global) to ensure compliance with UK Building Regulations (including high rise buildings), and meet the requirements PAS 2030: 2019 / PAS 2035:2019 for use under the Government’s Energy Company Obligation (ECO) and other energy efficiency initiatives. 

Why PermaRock External Wall Insulation?

PermaRock systems have been designed for use on high and low rise buildings, for traditional and non-traditional forms of construction, including, solid wall or cavity wall, dense and no-fines concrete, brick, stone and metal,...
Why PermaRock External Wall Insulation?

External Wall Insulation for High-Rise Buildings

For multi-storey buildings with floor levels above 18 metres above ground level, the PermaRock PermaRock Mineral Fibre EWI Systems, incorporating non-combustible stone wool insulation, should be specified. The system meets the...
External Wall Insulation for High-Rise Buildings

PermaRock External Wall Insulation Systems

PermaRock offers a range of high quality solutions that enable existing buildings to be refurbished or remodelled to improve both the thermal performance and to enhance the visual appearance of a building.
PermaRock External Wall Insulation Systems

PermaRend Exterior Render Systems

Three key render systems have been developed for application onto various substrate types, including, the PermaRock Exterior Render System for ventilated rendered façades.  Incorporating reinforcing mesh, our...
PermaRend Exterior Render Systems

Solid Wall & Non-Traditional Properties

PermaRock systems are designed to provide thermal and aesthetic improvements to all forms of construction types but are especially suited for application onto ‘Hard To Treat’ properties, such as Solid Wall...
Solid Wall & Non-Traditional Properties

Low-Carbon Retrofits / Non-Domestic Buildings

PermaRock external wall insulation is increasingly being used to improve the energy performance and aesthetics of public and commercial buildings and provides an opportunity to add high levels of insulation to the exterior...
Low-Carbon Retrofits / Non-Domestic Buildings

Design, Technical & On-Site Support

One of the most valuable benefits to specifying a PermaRock system is the knowledge that there is an extensive level of support provided alongside our products. With over 30 years’ experience in the...
Design, Technical & On-Site Support

Colour & Sample Selector

Use our innovative and easy-to-use colour and sample selector to view, choose and finalise your colour selections. You can view our entire range of decorative renders and finishes and ordering samples couldn't be easier.
Colour & Sample Selector
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