Adhesion
How well a coating holds to the surface beneath it, whether that surface is bare material, a repair, or an existing coating.
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How well a coating holds to the surface beneath it, whether that surface is bare material, a repair, or an existing coating.
Problem
8 entries for “Adhesion”
A new finish must adhere to the actual prepared surface it will touch.
My cleaning check is a fresh-rag wipe: no visible contamination should transfer. Repeat cleaning where residue remains. A visually clean surface still needs the adhesion and compatibility checks for the chosen system.
Field practiceWhere I use water-based grain filler, I prefer to apply it after a compatible bonding primer, such as STIX, because I have experienced beading over sanded lacquer.
The reviewed DTM Acrylic sheet lists a separate bonding-primer system for baked-on siding finishes. Its previously painted-surface guidance calls for an adhesion test after a one-week drying period.
Look for stains, checking, peeling, and physical damage. Identify dirt, debris, or contamination that must be removed. Material between the surface and the next coating can interfere with adhesion and contribute to later peeling.
New paint cannot restore the bond of a detached old layer.
Cleaning needed for repair adhesion comes before the repair; remove repair dust afterward.
Manufacturer directionHeavier texture needs particular attention to suitability and adhesion.
If inspection finds peeling, loss of adhesion, water damage, or another failing condition, address that problem before applying these corrective coats.
Filed under Problem: Peeling
Filed under Problem: Peeling
Filed under Problem: Peeling