Fibre Board Thermal Insulation Underlay 5.5mm with Recycled Content — pack calculator & costs
Compare whole-pack quantities, recorded costs and source-backed specifications for this product.
Store snapshots: 2026-10-10 · 1 sampled store(s)

Each recorded pack covers 10.03 m². Enter your room area below to calculate whole packs and compare recorded store offers for retailer SKU ACC-UN-FB-1391.
| Room area | With allowance | Packs | Purchased coverage | Material subtotal |
|---|---|---|---|---|
| 10 m² | 11 m² | 2 | 20.06 m² | £106.13 |
| 20 m² | 22 m² | 3 | 30.09 m² | £159.19 |
| 30 m² | 33 m² | 4 | 40.12 m² | £212.26 |
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 ↗ |
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 |
|---|---|
| Recorded thickness | 5mm |
| Laminate suitability recorded | 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
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- Room planner: compare floor and underlay quantities
- How we calculate costs and check sources