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Insulation Prices | BuildWatch
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Insulation
Compare insulation prices across 3 merchants.
📦 9 products
🏪 3 merchants
📊 Updated 07/04/2026
Timber & Sheet Materials
(18)
Plasterboard & Plastering
(12)
Insulation
(11)
Cement, Aggregates & Concrete
(10)
Bricks & Blocks
(10)
Roofing
(8)
Copper & Plumbing
(10)
Electrical
(8)
Drainage & Groundwork
(8)
Fixings & Fasteners
(8)
Sealants, Adhesives & Tapes
(8)
Doors & Windows
(8)
100mm Rockwool RWA45 Acoustic Sound Insulation Slab (x16 Slabs)
Save 569%
Wickes
£72.00
B&Q
£10.77
✓ Cheapest
25mm Unilin Xtratherm Thin-R PIR Insulation Board 2400mm x 1200mm (7/pack)
Save 12%
Wickes
£25.00
£25.00
✓ Cheapest
B&Q
£28.08
£196.56
Price Trends (30 days)
100mm Rockwool RWA45 Acoustic Sound Insulation Slab (x16 Slabs)
25mm Unilin Xtratherm Thin-R PIR Insulation Board 2400mm x 1200mm (7/pack)
75mm PIR Insulation Board with Aluminium Foil Layer 1200x450mm - Rigid Thermal Panel for Wall, Floor, Roof and Shed Insulation
Jabfloor 70 Polystyrene Insulation Board 2400 X 1200 X 25Mm
Knauf Eko Loft insulation roll, (L)9.72m (W)1.14m (T)100mm
Note:
Prices shown include VAT. Per-unit prices (e.g. per m², per kg) enable fair comparison across different pack sizes.
75mm PIR Insulation Board with Aluminium Foil Layer 1200x450mm - Rigid Thermal Panel for Wall, Floor, Roof and Shed Insulation
B&Q
£17.95
£17.95
Jabfloor 70 Polystyrene Insulation Board 2400 X 1200 X 25Mm
Wickes
£8.50
£8.50
Knauf Eko Loft insulation roll, (L)9.72m (W)1.14m (T)100mm
Save 86%
Wickes
£35.00
£35.00
✓ Cheapest
B&Q
£35.00
£35.00
✓ Cheapest
Knauf Insulation Dritherm® 37 Standard Cavity Slab 100 X 455 X 1200Mm
Wickes
£40.00
PACK OF 15 (Total 15 Units) - Premium Space Saving Roof / Loft Insulation Roll - 7000mm x 1160mm x 170mm
Save 688%
Wickes
£75.00
£75.00
✓ Cheapest
B&Q
£590.77
£8861.48
PACK OF 5 Superwall 36 Cavity Wall Insulation - 50mm/87.4 m2 (Superglass)
Save 65%
Wickes
£72.00
£72.00
✓ Cheapest
B&Q
£118.60
£593.00
Pack of 5 (Total 5 Units) - 50mm Cavity Wall Slab 36 - 1200mm (L) x 455mm (W) x 50mm (T)
Save 95%
Wickes
£90.00
£90.00
✓ Cheapest
B&Q
£175.51
£877.57
Product
Screwfix
Wickes
B&Q
Travis Perkins
100mm Rockwool RWA45 Acoustic Sound Insulation Slab (x16 Slabs)
—
£72.00
£10.77
cheapest
—
Save 569%
25mm Unilin Xtratherm Thin-R PIR Insulation Board 2400mm x 1200mm (7/pack)
—
£25.00
£25.00
cheapest
£28.08
£196.56
—
Save 12%
75mm PIR Insulation Board with Aluminium Foil Layer 1200x450mm - Rigid Thermal Panel for Wall, Floor, Roof and Shed Insulation
—
—
£17.95
£17.95
—
Jabfloor 70 Polystyrene Insulation Board 2400 X 1200 X 25Mm
—
£8.50
£8.50
—
—
Knauf Eko Loft insulation roll, (L)9.72m (W)1.14m (T)100mm
—
£35.00
£35.00
cheapest
£35.00
£35.00
cheapest
—
Save 86%
Knauf Insulation Dritherm® 37 Standard Cavity Slab 100 X 455 X 1200Mm
—
£40.00
—
—
PACK OF 15 (Total 15 Units) - Premium Space Saving Roof / Loft Insulation Roll - 7000mm x 1160mm x 170mm
—
£75.00
£75.00
cheapest
£590.77
£8861.48
—
Save 688%
PACK OF 5 Superwall 36 Cavity Wall Insulation - 50mm/87.4 m2 (Superglass)
—
£72.00
£72.00
cheapest
£118.60
£593.00
—
Save 65%
Pack of 5 (Total 5 Units) - 50mm Cavity Wall Slab 36 - 1200mm (L) x 455mm (W) x 50mm (T)
—
£90.00
£90.00
cheapest
£175.51
£877.57
—
Save 95%
Knauf Insulation Dritherm® 37 Standard Cavity Slab 100 X 455 X 1200Mm
PACK OF 15 (Total 15 Units) - Premium Space Saving Roof / Loft Insulation Roll - 7000mm x 1160mm x 170mm
Price chart will appear once we have 2+ days of data
PACK OF 5 Superwall 36 Cavity Wall Insulation - 50mm/87.4 m2 (Superglass)
Pack of 5 (Total 5 Units) - 50mm Cavity Wall Slab 36 - 1200mm (L) x 455mm (W) x 50mm (T)