Priming is a non-negotiable step when preparing concrete or wood substrates for self-leveling underlayments or high-performance patches. Porous substrates, if left unprimed, will aggressively absorb the moisture from the wet leveling compound. This rapid dehydration leads to 'wicking,' which causes the product to set prematurely, lose its adhesive bond, and frequently results in shrinkage cracking and surface dusting. Beyond moisture management, the primer serves as a pore-sealer, preventing air trapped in the substrate from bubbling up through the self-leveling mortar as it cures. These pinholes can create a rough, compromised finish that is unsuitable for installing luxury flooring like LVT or hardwood. By using a manufacturer-approved primer, you ensure uniform surface tension, allowing the leveling compound to flow optimally and reach its full design strength. Always check the product data sheet to determine which primer is compatible with your specific subfloor type.
Key considerations
- TEC floor primer
- why use primer
- self-leveling underlayment
- TEC
- Primer
- Floor Prep