Quick-Step Silent Walk Laminate Underlay QSUDLSW7 7m2 vs Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2
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 4 and 3 packs. Their recorded material subtotals differ by £185.30. 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 Silent Walk Laminate Underlay QSUDLSW7 7m2Flooring Supplies · ACC-UN-U-2068 | 7.0 m² | £93.23 | 4 | 28.0 m² | £372.92 | Use in my room plan → Store listing ↗ |
| 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 ↗ |
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 Silent Walk Laminate Underlay QSUDLSW7 7m2 | Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2 |
|---|---|---|
| Recorded heating systems | Not documented | Explicitly excluded |
| Laminate suitability recorded | Yes | Yes |
| Integrated moisture barrier recorded | Yes | Yes |
| Manufacturer model | QSUDLSW7 | QSUDLTL9 |
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 Silent Walk Laminate Underlay QSUDLSW7 7m2 · evidence
SKU ACC-UN-U-2068 · Flooring Supplies · recorded 2026-10-10
- Recorded pack price / £: 93.23
<div class="product-calculator flex flex-col g-5" data-product-calculator data-coverage="7.0" data-pack-price="93.228" data-min-quantity="1" data-wastage="10" >
Source · recorded 2026-10-10 - Coverage per pack / m²: 7.0
{"measured_type": "area", "quantity_value": "7.0", "quantity_unit": "m2", "reference_value": 1, "reference_unit": "m2"}
Source · recorded 2026-10-10 - Manufacturer model: QSUDLSW7
Quick-Step Silent Walk Laminate Underlay QSUDLSW7 7m2
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
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
Continue your plan
- Quick-Step Silent Walk Laminate Underlay QSUDLSW7 7m2 — pack calculator & costs
- Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2 — pack calculator & costs
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- Quick-Step Basic Plus Underlay QSUDLBP15 for Laminate Flooring 2mm vs Quick-Step Silent Walk Laminate Underlay QSUDLSW7 7m2
- Quick-Step Basic Plus Underlay QSUDLBP15 for Laminate Flooring 2mm vs Quick-Step Thermolevel Laminate Underlay QSUDLTL9 for Irregular Subfloors 9m2
- Quick-Step Silent Walk Laminate Underlay QSUDLSW7 7m2 vs Quick-Step Standard Foam Underlay QSUDLUN15 for Laminate and Real Wood Floors 15m2
- Room planner: compare floor and underlay quantities
- How we calculate costs and check sources