Structherm’s SEWI system can overcome timber obstacle

Some UK houses built after the second world war cannot be treated the same as standard brick houses.

Many local authority properties include Swedish Timber built post-war.

– They were quick to deliver.
– Timber frame.
– Vertical boarding inside and out.

But that construction creates a clear challenge today.

The external wall cannot reliably support standard insulation fixings. This creates risk around performance, durability, and sign-off.

Structherm’s Structural External Wall Insulation (SEWI) is designed for this exact scenario. Instead of relying on the outer boarding, the system uses a reinforced structural panel tied back to the frame.

This creates a new external substrate that:

1. Carries the load
2. Stabilises the façade
3. Allows a full thermal upgrade

All without depending on a weak external wall face.

It turns a hard-to-treat house type into a viable retrofit.