Gluing Plasterboard

How Plasterboard behaves when you bond it

The paper face is the weak point and tears away from the gypsum core under very little load, so the adhesive is almost never what fails. Anything with real weight on it needs a fixing into the stud behind.

Plasterboard is a gypsum core faced with paper. It is porous and easy to wet, but the paper-to-core interface and any paint or skim coat usually set the load limit; heavy or safety-critical items still require mechanical fixing into structure.

Confirm that the paper face, skim coat or paint is firmly attached. Keep the background dry, remove dust, grease and loose material, and cut away torn paper. Use broad adhesive dabs or beads as the named system specifies. Do not rely on adhesive alone for loads that exceed the board or facing strength.