Ardex P 51 Primer
The pink primer required under Ardex levellers and patches, sold in 1 gal and 4 gal sizes to match job size.
Free pickup in Markham (ready next business day) · GTA delivery $140
Specs
| Category | Adhesives & Primers |
| Size options | 1 gal · 4 gal |
| Unit sold | 3.79 L (1 gal) |
| Availability | Ready for Markham pickup next business day |
| Coverage | ~400 sq ft per gal |
| UPC | 709850209082 |
| Code | ARP51-04 |
Documents & Downloads
Official Ardex documents for Ardex P 51 Primer — the same warranty, installation and technical sheets our installers work from. PDFs open in a new tab.
- InstallInstallation Guide: ARDEX Technical Update 126 — ARDEX Underlayments and Non-Porous Substrates (max thickness & priming table, applies across K10/K13/K15/K22F/SD-P/FORTI FINISH)EN · 1 pg · 384 KBPDF
- TDSTechnical Data Sheet (12222)EN · 2 pg · 63 KBPDF
- Fiche Technique (12222) (FR)Français · 2 pg · 123 KBPDF
- SDSSafety Data Sheet (12222)EN · 6 pg · 158 KBPDF
- Feuillet de sécurité (12222) (FR)Français · 7 pg · 203 KBPDF
- BrochureBrochure (12222) (FR)Français · 1 pg · 1013 KBPDF
- SheetSales Sheet (12222)EN · 1 pg · 1007 KBPDF
- InfoInformation Document (12222)EN · 1 pg · 421 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 Ardex P 51 Primer
- 1Make sure the concrete is clean, dry and free of paint, sealers, curing compounds, or oil before priming.
- 2For standard absorbent concrete, dilute Ardex P 51 1 part primer to 1 part water by volume.
- 3For extremely absorbent or dusty concrete, use the "double-prime" method: dilute 1 part primer to 3 parts water for the first coat, then apply a second coat at 1:1.
- 4Roll or brush it on evenly — coverage runs about 400–600 sq ft per gallon depending on how absorbent the slab is.
- 5You’ll know it’s dry when the milky primer turns clear; drying takes a minimum of about 3 hours and up to 24 hours depending on temperature and airflow.
- 6Only apply your self-leveler, patch compound or adhesive once the primer is fully dry — never pour or spread over wet or tacky primer.
Related supplies
FAQ
Do I always need to prime before pouring a self-leveler?
On absorbent concrete, yes — nearly every self-leveling underlayment manufacturer requires a compatible primer first so the leveler doesn’t dry too fast at the surface and lose its bond. Skipping the primer is one of the most common causes of a self-leveler failing to bond.
How much Ardex P 51 Primer (1 gal) do I need?
Use the calculator on this page — enter your square footage and we’ll size the exact quantity, based on 1 gal covering about 400 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.