Insulation & Building Guides
U-Value of 50mm, 75mm, 120mm and 150mm PIR Insu...
Typical U-values for 50mm, 75mm, 120mm and 150mm PIR insulation in ground floors, cavity walls and pitched roofs, with R-values and manufacturer sources.
U-Value of 50mm, 75mm, 120mm and 150mm PIR Insu...
Typical U-values for 50mm, 75mm, 120mm and 150mm PIR insulation in ground floors, cavity walls and pitched roofs, with R-values and manufacturer sources.
Types of Insulation Explained: Which Should You...
The main types of insulation compared: mineral wool, PIR, phenolic, EPS, XPS, multifoil and insulated plasterboard, with the best use for each and examples from our range.
Types of Insulation Explained: Which Should You...
The main types of insulation compared: mineral wool, PIR, phenolic, EPS, XPS, multifoil and insulated plasterboard, with the best use for each and examples from our range.
Buy Access Panels Online: FlipFix Fire-Rated Pa...
Plasterboard faced vs metal faced FlipFix access panels, what 1 hour fire rated means, how to choose a size from 350 x 350mm to 900 x 600mm, fitting tips, and...
Buy Access Panels Online: FlipFix Fire-Rated Pa...
Plasterboard faced vs metal faced FlipFix access panels, what 1 hour fire rated means, how to choose a size from 350 x 350mm to 900 x 600mm, fitting tips, and...
Insulation Grants, ECO4 and Green Homes Schemes...
Dated 5 Nov 2026. GBIS closed to new applications per GOV.UK; ECO4 closing 31 Dec 2026. IWD sells materials only and does not apply for grants. Link official pages.
Insulation Grants, ECO4 and Green Homes Schemes...
Dated 5 Nov 2026. GBIS closed to new applications per GOV.UK; ECO4 closing 31 Dec 2026. IWD sells materials only and does not apply for grants. Link official pages.
Does Celotex / PIR Insulation Cause Damp? Myth-...
Does Celotex or PIR cause damp? Usually detailing, ventilation or leaks are the cause. Moisture-control and VCL guidance from IWD — no invented science.
Does Celotex / PIR Insulation Cause Damp? Myth-...
Does Celotex or PIR cause damp? Usually detailing, ventilation or leaks are the cause. Moisture-control and VCL guidance from IWD — no invented science.
Can You Have Too Much Loft Insulation?
Can you over-insulate a loft? Why ~270mm is the usual UK cold-loft target, diminishing returns, and problems from blocking vents or compressing wool.
Can You Have Too Much Loft Insulation?
Can you over-insulate a loft? Why ~270mm is the usual UK cold-loft target, diminishing returns, and problems from blocking vents or compressing wool.