Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2 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 · 2 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 £37.93. Compare the documented differences below before choosing.
Calculate for your room
| Product | Pack covers | Pack price¹ | Packs | Purchased coverage | Material subtotal | Next step |
|---|---|---|---|---|---|---|
| Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2Flooring Supplies · ACC-UN-U-2142 | 9.0 m² | £62.54 | 3 | 27.0 m² | £187.62 | 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 | Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2 | Cushion Ultra Silver Wood 15m2 Underlay |
|---|---|---|
| Recorded thickness | Not documented | 3mm |
| Recorded heating systems | Explicitly excluded | Not documented |
| Laminate suitability recorded | Yes | Yes |
| Integrated moisture barrier recorded | Yes | Yes |
| Manufacturer model | QSUDLTL9 | Not documented |
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
Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2 · evidence
SKU ACC-UN-U-2142 · Flooring Supplies · recorded 2026-10-10
- Recorded pack price / £: 62.54
<div class="product-calculator flex flex-col g-5" data-product-calculator data-coverage="9.0" data-pack-price="62.544" data-min-quantity="1" data-wastage="10" >
Source · recorded 2026-10-10 - Coverage per pack / m²: 9.0
{"measured_type": "area", "quantity_value": "9.0", "quantity_unit": "m2", "reference_value": 1, "reference_unit": "m2"}
Source · recorded 2026-10-10 - Manufacturer model: QSUDLTL9
Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2
Source · recorded 2026-10-10 - Laminate suitability recorded: Yes
For your laminate floor
Source · recorded 2026-10-10 - Integrated moisture barrier recorded: Yes
Protection against rising damp
Source · recorded 2026-10-10 - Recorded heating systems: Explicitly excluded
Note: it is not compatible with floor heating.
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
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- Room planner: compare floor and underlay quantities
- How we calculate costs and check sources