External wall insulation Northamptonshire

External wall insulation is one of the most effective upgrades for solid wall homes across Northamptonshire, where many Victorian, pre-war and rural properties lose a significant amount of heat through external walls. A properly installed EWI system reduces heat loss, stabilises indoor temperatures and protects the building fabric for the long term.

Warm Wall Ltd delivers high-quality external wall insulation and insulated façade systems across Northamptonshire. Our focus is on correct installation, durable finishes and long-term performance — not shortcuts or cosmetic solutions.

A technical solution, not a surface treatment

External wall insulation (EWI) significantly improves thermal performance, reduces heating demand and enhances the appearance of the façade. We treat every installation as a complete technical system, tailored to the property’s construction, condition and requirements — not as a generic, one-size-fits-all product.

Our work is based on a clear and controlled process:

Assessment — inspection of wall condition, structure and heat-loss points
Specification — selecting the appropriate insulation system, thickness and finish
Installation — insulation, reinforcement and façade finish
Quality checks — ensuring the system is installed correctly and consistently

This approach ensures predictable results, durability and long-term performance.

Serving homes across Northamptonshire

We provide external wall insulation services throughout the county, including: