Topic
Insulation materials and the membranes that go with them.
The complete UK guide to insulation: loft, wall and floor materials compared, U-values explained, and 2026 costs from £3/m² mineral wool to £35/m² spray foam.
How to insulate a garage in the UK: walls, roof, and floor options, material costs, DIY difficulty, and whether Building Regs apply to your project.
Bay window roof repair and insulation guide — flat roof types, lead vs felt vs GRP, U-value targets, typical costs and common failure points. UK 2026.
How to insulate suspended timber and solid concrete floors in UK homes — U-value targets, materials, costs, ECO4 grants and common mistakes to avoid.
Solid wall insulation costs £8,000–£22,000. Compare internal (IWI) and external (EWI) methods, U-values, disruption, and which suits your property.
VCLs on the warm side, breather membranes on the cold side — sd-values explained, interstitial condensation risk, taping requirements and UK costs.
Find out which insulation grants you qualify for in 2026 — ECO4, Great British Insulation Scheme, and local authority funds explained with eligibility and amounts.
Full-fill mineral wool, blown EPS bead and PUR foam cavity wall insulation compared on cost, U-value, damp risk and UK Building Regs suitability.
PIR boards vs mineral wool — lambda values, thickness for target U-values, fire performance, cost and where each works best.
Airborne and impact acoustic insulation for separating floors and walls — Part E performance targets, resilient bars, acoustic slabs, deck systems and UK costs.
Mineral wool roll types, the 270 mm depth rule, cold vs warm loft strategies, PIR for room-in-roof, and Part L U-value targets for UK loft insulation.
EPS and XPS compared on compressive strength, moisture resistance, lambda values, and cost — with guidance on under-slab, perimeter and inverted roof uses.
PIR insulation board sizes, thicknesses and 2026 UK costs: Kingspan Kooltherm and Celotex GA4000 compared by λ value, application, and price per m².
An honest look at multifoil insulation — how it works, claimed vs tested performance, required air gaps, where it's useful and cost per m².
Draught-proofing is the cheapest energy upgrade you can make. Learn which products work, where to seal, typical costs, and DIY steps that save £50–£150 a year.
Spray foam insulation costs £15–£35/m² but can cause mortgage and sale problems. The risks, lender positions and removal costs.
Rockwool vs glass wool vs slag wool insulation compared: thermal performance, fire ratings, acoustic specs, costs per m², and which to choose for each application.
Breathable roofing and wall membranes let moisture vapour out while blocking rain. Guide covers types, specifications, UK Building Regs, costs, and how to choose.
