Natural Cork Underlayment Sheets
Sold-by-the-sheet cork underlayment for laminate, engineered hardwood, and vinyl floors, good for patching rolls or small rooms. Available in 6 mm and 12 mm thickness.
Free pickup in Markham (ready next business day) · GTA delivery $140
Specs
| Category | Underlay & Acoustic Mats |
| Thickness options | 6mm sheet · 6 sqft · 12mm sheet · 6 sqft |
| Unit sold | 2' x 3' sheet (6 sqft) (6mm sheet · 6 sqft) |
| Availability | Ready for Markham pickup next business day |
| Coverage | ~6 sq ft per roll |
| Floor types | Laminate Flooring, Vinyl Flooring, Engineered Hardwood |
| Code | CRZ23-6 |
Documents & Downloads
Official Roberts documents for Natural Cork Underlayment Sheets — the same warranty, installation and technical sheets our installers work from. PDFs open in a new tab.
- WarrantyROBERTS Cork Warranty (EN)EN · 1 pg · 534 KBPDF
- ROBERTS Cork Warranty (FR) (FR)Français · 1 pg · 534 KBPDF
- InstallCork Underlayment Installation InstructionsEN · 4 pg · 783 KBPDF
- TDSTechnical Data Sheet 1/4" Cork Underlaymt Sheets (2023)EN · 1 pg · 2.1 MBPDF
- Fiche Technique Sous-couche en liege naturel 6 mm (2024) (FR)Français · 1 pg · 6.2 MBPDF
- Brochure2025 ROBERTS US Tools Catalog (also linked from every CA product page)EN · 84 pg · 18 MBPDF
- Brochure / Catalogue: ROBERTS Adhesive Product Guide (Small)EN · 8 pg · 4.5 MBPDF
- Brochure / Catalogue: ROBERTS Underlayment Product GuideEN · 8 pg · 9.1 MBPDF
Show 1 more document ↓Show fewer ↑
- SheetQEP_72025-04-05Q-01Q_CAN Cork Underlayment SheetsEN · 1 pg · 222 KBPDF
Need a document that isn't listed, or help reading a spec? Call (647) 428-1111 — we'll pull it from the manufacturer for you.
How to use Natural Cork Underlayment Sheets
- 1Roll the underlay out across the room, foam/pad side down, butting each roll edge to the next without overlapping (unless the product specifically calls for an overlap).
- 2Tape the seams if the roll doesn’t already have a built-in adhesive strip.
- 3Trim it to the wall lines — your baseboard or shoe moulding will cover the cut edge.
- 4Install your floating floor directly on top, working from one wall across the room.
- 5Never double up two pads under one floor unless the flooring manufacturer specifically allows it — pad-on-pad can feel spongy and void a flooring warranty.
Related supplies
FAQ
Can I use this underlay under vinyl plank flooring?
Only if your vinyl doesn’t already have a pad attached — most vinyl (SPC/LVP) sold today does, and doubling up (pad-on-pad) can feel spongy or void the flooring warranty. Check your plank spec, or ask us and we’ll confirm.
How much Roberts Natural Cork Underlayment Sheet — 6mm (6 sqft) do I need?
Use the calculator on this page — enter your square footage and we’ll size the exact quantity, based on 1 roll covering about 6 sq ft.
Not sure which product you need?
Use our supplies calculator to get a full kit recommendation for your floor type and subfloor, or ask us directly.