Typical EWI is generally applied to solid wall buildings i.e. no cavity within the brick wall construction. However EWI can also be applied to Cavity wall constructions to enhance thermal performance. There are a wide range of finishes available, the sysem pictured above shows Weber.therm XP. Other finishes include through colour silicone & acrylic, scratch render through colour finish, brick effect, brick slip & aggregate dash - all in a wide range of colours.

EWI systems that are available from our suppliers come with a British Board of Aggrement certificate and a 10 year warranty.


The above illustration highlights where heat is commonly lost within a home. (Further Information is available from the Energy Savings Trust website: http://www.energysavingtrust.org.uk/home-insulation

Key Features & Benefits

Increased thermal performance within both the refurbishment & new build construction markets.

GPD Contracts offer EWI from long standing market leaders. Companies that have been at the forefront of the established European and British markets.


When installing EWI to building regulation requirements, the property energy rating typically increases from F to C/B on solid wall properties.


Roto Fix

The Insulation within an EWI system is often mechanically fixed with a cementitious adhesive. However, as with all industries, manufacturers are striving for improvements to their systems.

Roto Fix is a patented fastener solution that can create a cavity without the need of timber or metal battens. This can also alleviate problems occurring from an uneven background or to achieve Architectural features such as curves.

STO Turbo Fix

STO Turbo fix offers an adhesive only fixing option, eliminating continuous drilling and subsequent vibration and noise issues during installation.


18th January 2020

Render cleaning & maintenance near Cheltenham

GPD Contracts recently completed a Render cleaning & maintenance project near Cirencester, Gloucestershire. Maintenance of the Render system had unfortunately […]
19th September 2019

Worcester Crowngate

After commencing works in spring, the Crowngate project in Worcester’s city centre has been completed. We are delighted to have […]
18th August 2018

EWI installed in 1930’s Period property in Evesham

We were pleased to supply & Install Wetherby EPS EWI at Greenhill, Evesham. Period features including the two Half Timbered […]
2nd June 2018

EWI supplied to a Bungalow renovation near Pershore…

We have been pleased to again work with David Smallcombe builders Their project involved the complete refurbishment and development of […]
21st April 2018

EWI installations in Malvern

GPD contracts supplied & Installed External wall insulation (EWI) to a pair of Semi detatched houses in Malvern. We are […]
21st April 2018

EWI transforms a Bungalow in Worcester

Many thanks to Linda & Peter for their feedback and hospitality: Although we’d researched the product and viewed previous work […]