Around a quarter of a home's heat can escape through a poorly insulated roof. We top up loft insulation to the recommended 270mm across Merseyside and the North West — usually in half a day.

Insulation only performs when the details are right. Every NWL top-up covers them:


The core job — existing insulation measured, gaps filled, then cross-layered to a full and even 270mm.
Raised loft boarding fitted above full-depth insulation — storage space without squashing a single millimetre.
An insulated, compression-sealed hatch that stops the warm-air leak above your landing.
Cold-water tanks jacketed and pipework lagged, so a colder loft never means frozen pipes.
Depending on your home and circumstances you may qualify for government-backed insulation support. Ask on your free survey and we'll point you in the right direction — no jargon, no forms you don't need. *Typical saving shown is for a gas-heated semi upgrading from 100mm; your survey gives figures for your home.
We measure what's up there now and check ventilation, wiring and downlights.
Dust sheets down, cables lifted, covers fitted, eaves kept clear.
Fresh mineral wool between and across the joists for a full, even blanket.
Photos of the finished lay, your paperwork, and the hatch sealed on the way out.
Homes insulated before the mid-2000s often have 100mm or less — well under the 270mm now recommended. We measure your existing depth on the free survey and only quote for the top-up you actually need.
Yes — pair the top-up with our raised loft boarding and you get full-depth insulation with a solid storage deck floating above it. No compromise either way.
It does. Insulation slows heat moving in both directions, so bedrooms stay noticeably cooler during hot spells as well as warmer in winter.
No — dust sheets down, materials brought up in sealed bags, offcuts bagged and removed, and the landing hoovered before we go. Most top-ups take half a day.
High-performance glass mineral wool roll — non-combustible, laid between and across the joists to reach a full, even 270mm.
Free surveys with a depth check included — fixed quotes within 24 hours across the North West.
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