Energy Efficiency
Reduces heat loss by up to 45%, improving your EPC rating instantly.
Internal Wall Insulation
Transform cold solid walls into energy-efficient, warm spaces with Knauf-approved IWI panels — comfort meets craftsmanship.
🏡 Solid-wall specialists
💨 Reduced heat loss
🎧 Quieter rooms
♻ Eco-friendly boards
Why choose Internal Wall Insulation?
Lower Bills
Save hundreds per year by retaining more warmth inside.
Comfort & Soundproofing
Enjoy quieter, more stable indoor temperatures year-round.
Modernised Interiors
Fresh plasterboard finish ready to decorate for a sleek new look.
📈 Improve EPC instantly
Solid-wall IWI can raise ratings by 1–2 bands.
Clearpay available
Up to £1,000 • 4 instalments • 10% admin fee.
📣 10% Labour discount for Military, Blue-light & OAP customers!
✅ Our IWI panels use recyclable Knauf materials — 97% eco content.
Professional materials, clean finish
We use Knauf insulation boards and quality fixings. Certificate on completion.
Serving all of Yorkshire
York
Leeds
Sheffield
Kingston upon Hull
Bradford
Ripon
Harrogate
Wetherby
Wakefield
Doncaster
Huddersfield
Pickering
Book your IWI survey
Frequently asked questions
How long does IWI take?
Typical rooms complete in 2–4 days depending on size and detailing.
Will I lose much room space?
Expect ~50–70mm build-up including board and skim.
Do you handle sockets/radiators?
Yes — we extend services, refit radiators and make good.
Does it reduce damp?
IWI warms internal surfaces; we'll advise on ventilation too.