GSA Basecoat 45 Minute Plaster Compound 2.5kg

Setting plasterboard joints is where a wall job is won or lost. Basecoat is the first coat that goes over the join and the tape, building it up flat and strong before your topcoats.

The 45 minute version gives you a decent working window. Long enough to mix a batch and run a few joints, short enough that you're not waiting all day to recoat. It's grit-free, so it mixes smooth and sands back clean.

Sized at 2.5kg for small repairs and patch jobs. Mixing ratio and set times are in the tabs below.