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What adhesive to use for engineered flooring over an under-floor heating system?
You asked
The top layer of engineered hardwood flooring is delaminating after 23 years. The flooring is installed over hydronic floor heating. What is the best adhesive to reattach the top layer?
Asked by Bob l'A
Our expert answers
To install engineered wood flooring over radiant heat I suggest you use a premium quality, urethane-based adhesive Bob. Choices include Bona Quantum Flow, Bostik’s Best, or SikaBond-T21. I’d check the warranty on the brand of laminate flooring you intend to use – not all warranty their products over radiant heating systems.
Published July 15, 2025 | Last revised December 28, 2025
