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Extensions

Screeding

Anonymous user 22/06/2026 - 7.50 AM

My previous builder missed a section of the floor when screeding. Can I just pva the area and put some screed over the top ?

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1 Answer

BSM Interior Ltd

Rating: 4.9 out of 5

Wood Green, London

No, you should not use standard PVA as a bonding agent for a floor patch. PVA is water-soluble; if moisture gets under your flooring in the future, the PVA can reactivate, causing the new screed to lose adhesion, crack, or fail entirely. The method: Prime the bare floor with a diluted SBR mix (usually 3 parts water to 1 part SBR). For an even stronger hold, brush on a neat "slurry" (a mix of SBR, water, and cement) right before applying the screed.

Answered22 June 2026