Architects & Conservation Officers
Specify the most sensitive buildings.
Full technical support from design stage to site sign-off and LPA approval.
- WTA-compliant breathable system
- Hygrothermal modelling service
- BIM objects & full CAD detail library
What is WTA certification and why does it matter?
The WTA (Wissenschaftlich-Technische Arbeitsgemeinschaft) is the German scientific association for building maintenance and monument preservation. WTA Merkblatt 6-4 defines the internationally recognised technical standard for internal insulation of historic buildings. A WTA-compliant system has been tested to manage moisture correctly in heritage wall constructions, giving architects, conservation officers and homeowners confidence that the insulation will protect, not harm, the historic fabric.
AeroGel
An ultra-thin thermal boost where reveals and junctions are tight.
Guide price · ex. VAT · supply only £23.70 /m²
17th-century Cotswold farmhouse
Solid stone walls, cob partitions and original lime plaster. Significant thermal improvement achieved while satisfying Historic England’s strictest requirements.