Tapered Edge Gypsum Board

What types of 4-side tapered-edge gypsum board are there, and which frame do they use?

The back edge slopes down at the head and tail of the board so the joints can be skim-coated flat without ridges, and a dashed line on the front marks the tapered edge. Boards are 9 mm thick, 1200 x 2400 mm, in three types:

• Standard: general interior areas
• Heat-protection: top-floor ceilings under the roof
• Moisture-resistant: bathroom, kitchen and garage ceilings

They are fixed to a galvanized steel frame for skim-coat ceilings, 37 x 15 mm section, 0.52 mm steel, 4 m per bar, with arrow marks every 10 cm. The frame is made to TIS 863-2532 and carries at least 150 N/m at 3 mm deflection.

What is tapered-edge gypsum board?

Tapered-edge board has its two long edges slightly thinned. Butted together, they form a shallow recess where the joint tape and joint compound sit, so the finished joint is flush with the board instead of forming a ridge. It is the standard board for drywall ceilings and partitions.

Types and uses

• Standard tapered-edge board, 9 mm for ceilings and 12-15 mm for walls
• moisture-resistant board with tapered edges for bathrooms and kitchens
• heat-resistant board and fire-rated board with tapered edges
• For T-bar tiles or trimmed joints, use square-edge board

Benefits

• Seamless joints that don't show after painting
• Less compound needed than finishing square edges flat
• Tape bedded in the recess reduces joint cracking
• Short butt ends aren't tapered: stagger them and feather the compound wider

Why buy tapered-edge board at OneStockHome

We stock tapered-edge board in every thickness from SCG, Gyproc, Knauf, TOA and GM with per-sheet prices, and you can add tape and joint compound to the same order. Delivered nationwide.