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  • Window board fastening question. I am milling up some one piece oak boards to replace all the internal cills in our house. I'd like to attach them without any visible fasteners. The deepest board will be about 200 and 30mm thick so perhaps will be some wood movement to contend with. I'll be Osmoing both sides of the boards. It's going onto a solid brick wall (no cavity).

    Can I get away with adhesive alone? I have a tub of sumogrip in front of me which is a polymer adhesive, will it work? Or how about some polyurethane foam adhesive?

  • polyurethane foam adhesive?

    If this is this the low expansion grade designed to stick insulation to variable surfaces,
    rather than the normal expands for hours grade, then 'Yes'.

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