Fibre Board Thermal Insulation Underlay 5.5mm with Recycled Content vs Cushion Ultra Silver Wood 15m2 Underlay
Compare whole-pack quantities, recorded costs and source-backed specifications for these products.
Store snapshots: 2026-10-10 · 1 sampled store(s)
For an illustrative 20 m² room with 10% allowance, these options require 3 and 2 packs. Their recorded material subtotals differ by £9.50. Compare the documented differences below before choosing.
Calculate for your room
| Product | Pack covers | Pack price¹ | Packs | Purchased coverage | Material subtotal | Next step |
|---|---|---|---|---|---|---|
| Fibre Board Thermal Insulation Underlay 5.5mm with Recycled ContentUK Flooring Direct · ACC-UN-FB-1391 | 10.03 m² | £53.06 | 3 | 30.09 m² | £159.19 | Use in my room plan → Store listing ↗ |
| Cushion Ultra Silver Wood 15m2 UnderlayUK Flooring Direct · ACC-UN-NO-005 | 15.0 m² | £74.84 | 2 | 30.0 m² | £149.69 | Use in my room plan → Store listing ↗ |
¹ Pack prices display rounded pennies; line totals use the source’s full price precision. 10% is an adjustable example allowance. Quantities round up using recorded merchant order rules. Material subtotals exclude delivery, labour, preparation, trims, tape and additional membranes. These are dated offers from our sampled stores; confirm current price and stock with the store.
Documented specifications
| Specification | Fibre Board Thermal Insulation Underlay 5.5mm with Recycled Content | Cushion Ultra Silver Wood 15m2 Underlay |
|---|---|---|
| Recorded thickness | 5mm | 3mm |
| Laminate suitability recorded | Yes | Yes |
| Integrated moisture barrier recorded | Not documented | Yes |
This is a specification and quantity comparison, not a hands-on review or installation approval. Confirm the exact floor, underlay, subfloor and heating requirements together.
Sources behind these figures
Fibre Board Thermal Insulation Underlay 5.5mm with Recycled Content · evidence
SKU ACC-UN-FB-1391 · UK Flooring Direct · recorded 2026-10-10
- Recorded thickness: 5mm
thickness: 5mm
Source · recorded 2026-10-10 - Laminate suitability recorded: Yes
FibreBoard Underlay – Superior Comfort & Insulation Transform your space with FibreBoard underlay, designed for laminate and real wood flooring to keep your floors warm and your home feeling extra cosy. With outstanding thermal insulation, it’s the perfect solution for cold subfloors—ideal for areas like cellars or chilly ground floors. Not only does it enhance comfort, but FibreBoard also helps smooth out uneven subfloors by up to 5.5mm, creating a more stable surface for your flooring. Plus, with acoustic insulation of up to 18dB, it reduces noise for a quieter, more peaceful home. Crafted from 100% natural, recyclable wood materials, this eco-friendly choice is better for both your home and the planet. Key Benefits: Stay Warm – Excellent thermal insulation keeps out the cold Smoother Floors – Levels out subfloor irregularities up to 5.5mm Quieter Spaces – Reduces noise with up to 18dB acoustic insulation Eco-Friendly – Made from 100% natural and recyclable materials
Source · recorded 2026-10-10 - Coverage per pack / m²: 10.03
metersPerPack: 10.03, packsRequired: 0, productPrice: 53.064
Source · recorded 2026-10-10 - Recorded pack price / £: 53.064
metersPerPack: 10.03, packsRequired: 0, productPrice: 53.064
Source · recorded 2026-10-10
Cushion Ultra Silver Wood 15m2 Underlay · evidence
SKU ACC-UN-NO-005 · UK Flooring Direct · recorded 2026-10-10
- Recorded thickness: 3mm
thickness: 3mm
Source · recorded 2026-10-10 - Laminate suitability recorded: Yes
A self-levelling acoustic underlay with a built-in DPM, Cushion Ultra Silver Underlay is made from 3mm thick high-density foam with a vapour barrier to keep moisture at bay. Suitable for DIY use with all click-together wood and laminate flooring, the underlay reduces impact sound by up to 19dB and can help to eliminate minor subfloor irregularities. The underlay is ready for use with underfloor heating and can be used in conjunction with Lumberjack M.B Primer. Seams should be taped and each 1m wide roll covers approximately 15m2.
Source · recorded 2026-10-10 - Integrated moisture barrier recorded: Yes
A self-levelling acoustic underlay with a built-in DPM, Cushion Ultra Silver Underlay is made from 3mm thick high-density foam with a vapour barrier to keep moisture at bay. Suitable for DIY use with all click-together wood and laminate flooring, the underlay reduces impact sound by up to 19dB and can help to eliminate minor subfloor irregularities. The underlay is ready for use with underfloor heating and can be used in conjunction with Lumberjack M.B Primer. Seams should be taped and each 1m wide roll covers approximately 15m2.
Source · recorded 2026-10-10 - Coverage per pack / m²: 15.0
metersPerPack: 15.0, packsRequired: 0, productPrice: 74.844
Source · recorded 2026-10-10 - Recorded pack price / £: 74.844
metersPerPack: 15.0, packsRequired: 0, productPrice: 74.844
Source · recorded 2026-10-10
Continue your plan
- Cushion Ultra Silver Wood 15m2 Underlay — pack calculator & costs
- Fibre Board Thermal Insulation Underlay 5.5mm with Recycled Content — pack calculator & costs
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- QuickTherm Vapour 10m2 Underlay vs Cushion Ultra Silver Wood 15m2 Underlay
- Fibre Board Thermal Insulation Underlay 5.5mm with Recycled Content vs Essential Cushion White 15m2 Underlay
- Fibre Board Thermal Insulation Underlay 5.5mm with Recycled Content vs Essential Plus Cushion White 15m2 Underlay
- Room planner: compare floor and underlay quantities
- How we calculate costs and check sources