Loft Insulation
Loft Insulation
Stay Legal. Cut Costs. Keep the Heat In.
Since 1 April 2018 it has been illegal to let a property in England and Wales with an inadequate energy rating. From 1 April 2023, that rule applies to all existing tenancies.
If your property has an EPC rating of F or G, you risk penalties and could be stopped from renting it out altogether unless you upgrade its efficiency.
One of the simplest ways to comply? Loft insulation.
Why Loft Insulation Matters
- Stop heating the sky: Up to 25% of a home’s heat escapes through the roof.
- Save on bills: More than £240 a year in wasted energy – money your tenants could be saving.
- Fast payback, lasting protection: A one-off install that shields you from rising costs for years.
- Better for everyone: Lower carbon footprint, happier tenants, higher property value.
Installing 270 mm (11 inches) of quality loft insulation can transform a property from non-compliant to efficient, dramatically reducing heat loss and future-proofing your investment.
Our Insulation Options
We fit only proven, high-performance products tailored to your property type:
Knauf Loft Roll 44
Glass Mineral Wool roll for cold lofts with pitched roofs.
Thermal Conductivity: 0.044 W/mK.
Best for newer builds (late 1980s onwards).
Knauf Loft Roll 40
Higher-performance Glass Mineral Wool.
Thermal Conductivity: 0.040 W/mK.
Euroclass A1 (non-combustible).
Made with ECOSE® Technology.
Best for older properties.
Sheep’s Wool Insulation (Thermafleece CosyWool)
75% natural wool, 25% recycled polyester.
Safe to handle, breathable, excellent thermal & acoustic performance.
Thermal Conductivity: 0.039 W/mK.
SupaSoft Insulation
Made from recycled plastic bottles.
Soft, non-itch, chemical-free, easy to install.
Thermal Conductivity: 0.16 W/mK (lower efficiency).
Protect Your Investment Now
Upgrading your loft insulation is the quickest, most cost-effective way to hit MEES targets, avoid fines, improve tenant comfort and safeguard your rental income against stricter regulations coming down the line.
Call Just Lofts & Build today for a free survey and no-nonsense quote. We’ll make sure your property passes – and stays ahead of – the rules.
Contact Us
Just Lofts & Build
Office: 029 2252 3483
Mobile: 07514 795 000
Proudly serving Cardiff and surrounding areas within a 50-mile radius