I want to install solid pine 25mm thick floating shelves above my gas central heated radiators. Is there a suggested gap between shelf and radiator to prevent any warping or distortion of the wood. The shelves will be painted white satinwood.
Escrape,
MDF should be far more stable than pine, I would suggest three point fixing to minimise bowing. B&Q shelves - try one you can always take it back if it does warp.
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