Please advise the best way of fixing engineered wood flooring planks to a new floor construction with underfloor heating?
A. Assuming this is a wet pipe system embedded in a concrete screed, the best method would be to use a Sikabond T54 adhesive in a full contact installation where the adhesive is spread directly onto the concrete with a knotched trowel. Be aware though that, depending on site conditions and thickness of the screed, it can take up to three months (typically) for the moisture level in the screed to fall to the required 4% or less before installation can take place.The Sika MB Primer product can be used to bring this period of time down to one and a half months. Also, follow the underfloor heating manufacturer’s commissioning instructions to the letter – normally the heating system temperature must be raised slowly over a period of time.
