CORREX® Protection Sheet Boards 2.4m x 1.2m – 4mm Thick

CORREX® 4mm correx sheet boards are a staple on building sites and in print and signage work for good reason. They are lightweight enough to carry in one hand, stiff enough to hold their shape under load, and waterproof enough to sit outside for weeks without warping or disintegrating. At 2.4m x 1.2m, a single sheet covers a full 8ft x 4ft area, which makes them a practical match for standard door openings, floor sections, and hoarding panels.

Correx is a twin-wall polypropylene sheet, which gives it a hollow fluted core. That core is what keeps the weight down while still providing decent rigidity across the face of the sheet. You can walk on them, lean against them, and stack materials on top without the sheet collapsing. They are also easy to cut with a Stanley knife and straight edge, so trimming to size on site takes seconds rather than minutes.

The 4mm thickness is the most widely used for general protection and temporary signage work. It sits in a useful middle ground: thicker than the lightweight 3mm sheet, but not as heavy or stiff as 5mm boards. For most floor protection and door protection jobs, 4mm is the right call.

Where CORREX® 4mm Correx Sheets Get Used

On construction sites, these boards are used to protect finished floors during the fit-out phase. Lay them over hardwood, tile, or polished concrete and they absorb foot traffic, dropped tools, and the general abuse of a working site without leaving marks on the surface below. They are also widely used to protect door frames and entrances during plastering and painting work.

Estate agents and exhibition companies have long used Correx for printed display boards. The material takes printed vinyls cleanly, and the sheets are light enough to post on a wooden stake or hang from a frame without needing heavy fixings.

Outdoor and Temporary Applications

Because polypropylene is naturally resistant to moisture, Correx boards handle outdoor conditions well. They will not absorb rain, they will not swell, and they do not rot. That makes them a dependable choice for temporary weather screening, site hoarding inserts, and any job where the board needs to stay outside for a period without deteriorating.

The four available colours, black, grey, white and translucent, mean you can choose a sheet that suits the job. Translucent boards allow some light through, which can be useful where you need temporary screening without blocking a space entirely. White and grey are the standard choices for signage. Black offers better UV resistance for longer outdoor use.

Sold in packs of 50 sheets, these boards are priced for trade use. Whether you are a site manager ordering protection materials for a whole project, a sign maker keeping stock in the workshop, or a contractor who goes through a few sheets every week, buying in quantity makes sense. The sheets stack flat and store easily, so bulk stock does not take up much space.