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The walls on the sides and back of my fireplace are plaster on masonry. How can I attach baseboards to these walls? I tried bonding with HMA but eventually that just peels the paint off.

ArgentoSapiens
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2 Answers2

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If by HMA you mean Hot-Melt Adhesive, that stuff is for arts & crafts, not construction.

Hot Glue gun

You should be using construction adhesive.

LOCTITE®, LIQUID NAILS®, DAP®, and possibly other adhesive manufacturers offer a molding adhesive.

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Tester101
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Paint difficulties can be resolved by scraping and priming with a shellac or oil based primed. I prefer the polyurethane based construction adhesives for strength and toughness. Their down side is cure time (overnight)

Another scheme would be to cut back the plaster to 75% of the baseboard height with a diamond blade in an angle grinder (yes, very messy: floor to ceiling tarping, shop vac.. ) Then place 1x or thicker wood and blue screw (one brand of masonry screws are blue and need only a pilot hole (also comes in counter sinkable flat heads))(Tapcon brand, GRK and Spax are also good) it to masonry. Overfill with setting joint compound to flush surface. Nail baseboard normally.

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Not afflliated with either company. Have used both.

HerrBag
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