Knauf Loft Insulation Installation
Knauf glass mineral wool loft insulation supplied and installed across South Wales. Trusted brand, full 270mm depth, fitted to current building regulations.
Independent, evidence-based surveys
Knauf loft insulation is one of the most cost-effective ways to lower your heating bills. A correctly installed 270mm layer of Knauf Loft Roll 44 can cut heat loss through the roof by up to 25%, paying for itself in just a few winters.
We supply and install genuine Knauf insulation across Bridgend, Cardiff, Swansea, Newport and the wider South Wales region. Every job is fitted between and over the joists to current building regulations, with care taken around downlights, eaves vents and water tanks.
Whether you have no insulation at all, an old thin layer that has slumped, or want to top up to modern standards, we can quote and install quickly with minimal disruption.
Why Knauf loft insulation matters
Lower heating bills
A properly insulated loft is one of the cheapest energy upgrades you can make.
Improved EPC rating
Loft insulation boosts your EPC and helps landlords meet MEES requirements.
Warmer rooms
Stops heat escaping through the ceiling so upstairs rooms feel noticeably warmer.
Soft & non-itch options
Knauf's Earthwool range uses ECOSE technology, easier to handle and less irritating.
Fire & moisture safe
Glass mineral wool is non-combustible and breathable, suited to UK lofts.
Long lifespan
Once installed correctly it lasts the lifetime of the property with no maintenance.
Book your knauf loft insulation quote today
Honest diagnosis from a local independent surveyor. No sales, no pressure.
Why independent surveys matter
We don't sell treatments, chemicals, or remedial work. That means our only job is to find the truth and explain it to you clearly.
We use genuine Knauf product to the correct depth, not a thin token layer that under-performs.
We protect ventilation, downlights and water tanks so your loft stays safe and condensation-free.
We give a clear written quote upfront with no upsells or pressure.
Inspection → Testing → Report
Loft survey
We measure the loft, check existing insulation, ventilation and access.
Supply & install
Knauf Loft Roll fitted between and over joists to 270mm, around obstructions.
Clean handover
All packaging removed, loft hatch left tidy and a guarantee provided.
Surveys tailored to South Wales
We cover the whole South Wales region: Bridgend, Cardiff, Vale of Glamorgan, Swansea, Neath, Port Talbot, Newport and the valleys. Most homes can be insulated in a single visit.
Many South Wales properties built before the 1990s still have less than 100mm of loft insulation. Topping up to modern 270mm depth is one of the highest-ROI upgrades available.
Get an honest answer about your property
- 100% independent, we don't sell remedial work
- Detailed written report with photographs
- Calibrated equipment and clear evidence
- Local surveyor, same-day response