In general terms, when considering render solutions for metal frame buildings, the following applies:

Insulation is generally contained within the metal frame
An approved Render board is mechanically fixed to the secondary metal frame (SFS)
Base coat render & fibre reinforcing mesh is completed to a flat sponge finish
Primer & finishing silicone or acrylic coloured top coat

Generally this applies to new build projects and can be used within both domestic & commercial schemes.

Recommended Installers

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

GPD Contracts have worked closely with our suppliers for a number of years. Our partners as listed below all carry certified systems for use on metal frame constructions.

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. The fixing methods below from STO showcase this:

Knauf Exterior Aquapanel

Knauf Exterior Aquapanel is widely approved with our partners

A Project specific specification is available

When installing, close attention to the system providers

Specification is critical to the longevity of the finished render system

Particular attention to detailing around openings, corners, movement joints should be evident

PVC bead, Insect Mesh & APU Bead

On ventilated systems, the use of board edge closing PVC Beads and insect mesh are integral to the long-term performance

Frame seal, or APU Beads, are an innovative stop bead for use around windows. The bead includes a self-seal feature, which generally negates the need to apply a silicone seal on completion of render application. Frame seals also incorporate a removable protective strip (the yellow strip on the image above). This ensures a sharp clean line when complete.


4th February 2020

Weber Silicone Render by GPD Contracts ltd.

A New Competition Swimming pool in Coventry, Warwickshire. Weber MT Silicone Render system has been supplied and installed at Coventry’s […]
8th January 2020

Constructionline GOLD member

Specialist Render & EWI Contractors GPD Contracts ltd confirm Constructionline Gold level membership For Supply and installation of : Specialist […]
6th April 2018

Rendering – Health & Safety

GPD Contracts ltd recognise and embrace the importance of Good health & safety practice. A safe environment for our team […]
7th March 2018

EWI & Silicone Render at South Derbyshire & Burton College

A complete renovation of the external envelope was undertaken by Hazlemere Group in 2015. GPD were pleased to provide the […]
19th January 2018

Silicone Render helps to create a contemporary twist to a rural period property near Worcester

The project essentially involved two separate systems. Wetherby EWI to solid brick wall construction was applied to the original period […]
17th January 2018

Silicone Render to a new sports facility and swimming pool at Eversfield School, Solihull

Working with Stepnell Construction, we provided 1.5mm Textured Silicone render only for a metal framed construction to the new build […]