Wetherby Building Systems has obtained BBA approval for its Epsitec external wall insulation (EWI) system, which has been developed for installation onto timber frame buildings.
An increasing amount of new build schemes are making use of modern building techniques to cut project timescales and costs. Wetherby has responded to this by designing and producing its Epsitec system for steel and timber frame constructions.
The system, which has been developed in accordance with NHBC guidelines, incorporates a drainage cavity; placed behind its insulation board, this feature ensures that the sheathing board and building frame remain dry, protecting the internal building from potential water damage.
BBA certification for timber frame structures
The Epsitec system was tested for its thermal performance, risk of condensation, behaviour in relation to fire and strength and stability. After its quality was affirmed, the system was awarded BBA certification.
The new timber frame certification is suitable for new and existing domestic and non-domestic buildings, up to four storeys in height. Wetherby is also certified and equipped to install up to any height on a steel framed building.
The certificate has approved three insulation materials for use with the Epsitec system: Phenolic, EPS and EpsiTherm enhanced EPS.
Once the chosen material is in place, the system is finished with Wetherby’s impact resistant silicone render. Flexible in nature, the render is suitable for installation onto timber framed substrates, where movement is likely. It is available in a range of colour options to complement any architectural design.
