Question 1

What is the difference between square edge and tapered edge plasterboard?

Accepted Answer

Square edge board has flat, unrecessed edges on all four sides and is designed for use where the full surface will receive a skim coat of finish plaster. Tapered edge board has recessed long edges so that jointing tape and compound can be feathered flush for a seamless, paint-ready surface without full skimming.

Question 2

Can 12.5mm plasterboard be used on ceilings?

Accepted Answer

Yes. 12.5mm is a standard thickness for ceilings where joist centres are at 400mm or 600mm. For spans beyond 600mm or where additional acoustic or fire performance is needed, a thicker board or a specialist product should be specified instead.

Question 3

How do I cut plasterboard cleanly on site?

Accepted Answer

Score firmly through the paper face with a sharp knife and straightedge, then snap the board away from you over the scored line. Run the knife along the back paper to separate the cut. A plasterboard saw can be used for internal cuts and cut-outs around sockets or switches.

Material	Aerated gypsum core with paper liners
Grade	BS EN 520:2004+A1:2009 Type A (general purpose)
Thickness	12.5mm
Sizes Available	2400mm x 1200mm / 1800mm x 900mm
Profile	Square edge
Finish	Paper-faced, suitable for skim coat, textured finish, or direct decoration
Use	Internal walls and ceilings only

Specifications

What it's used for

Fitting and handling

FAQ

Square Edge Plasterboard x 12.5mm