Tapered Edge Plasterboard

Welcome to the Tapered Edge Plasterboard category, where we feature a variety of plasterboard options from industry-leading vendors such as Knauf, British Gypsum, Siniat, and Euroform. Navigating through the wide array of products, you will observe each plasterboard has its distinct specifications and uses which cater to different requirements in building and renovating spaces.

Standard Wallboards

• Knauf Wallboard Tapered Edge & Gyproc Wallboard Tapered Edge These general-purpose wallboards offer flexibility and robustness needed for your typical drylining projects. Suitable for both walls and ceilings, they provide a smooth surface for decoration and a performance level compatible with most domestic applications

Fire Resistance

• Knauf Fire Panel & Fire Rated Wallboard Focused on enhancing fire safety, these plasterboards are developed to offer extended protection against fire. Apt for spaces that need to adhere to strict fire regulations, they are specifically designed to be utilised in areas like enclosed escape routes, communal areas, or places where additional fire protection is mandatory

Sound Proofing

• Knauf Soundshield Plus For spaces where sound insulation is a priority, such as home theatres, music rooms, or offices, this plasterboard is crafted to deliver elevated acoustic performance, helping to minimise sound transmission to create serene and quiet interiors.

Moisture Resistance

• Knauf Moisture Panel & Siniat Moistureshield Ideal for humid and moist environments like bathrooms, kitchens, and utility rooms, these plasterboards are tailored to provide excellent moisture resistance, ensuring durability and sustained performance even in high-humidity conditions.

Thermal Insulation

• Knauf XPS Thermal Laminate Plus With a core focus on energy efficiency, this plasterboard is integrated with insulating materials to help regulate indoor temperatures, ensuring environments stay warm in winter and cool in summer, which can potentially reduce energy costs.

Vapour Control

• Knauf Vapour Panel Suited for buildings where vapour control is essential, such as residential properties, this plasterboard possesses a metallised polyester foil backing, designed to prevent vapour from permeating the wall, thereby mitigating risks related to dampness and structural integrity.

Choosing the Right Plasterboard

Selecting the appropriate plasterboard involves considering several factors like the intended use, the level of performance required, and specific regulatory compliances. Consider the following when browsing:

• Fire Safety: Opt for fire-resistant boards in spaces that require stringent fire safety norms.
• Acoustic Control: Choose soundproofing boards for areas where minimising noise transmission is critical.
• Moisture and Vapour Control: Consider moisture-resistant and vapour control boards for humid areas like kitchens and bathrooms.
• Thermal Efficiency: For properties looking to enhance energy efficiency, thermal boards are crucial.
• Bulk Purchases: When undertaking larger projects, consider pallet purchases to ensure supply continuity.
• Tiling: Employ specialised backer boards where tiling is part of the aesthetic or functional requirement.

Choosing boards for walls, ceilings and specialist rooms

The recessed edges of a tapered board provide space for jointing tape and filler, helping form a level surface for paint or wallpaper without a full skim coat when the manufacturer’s taping system is followed. This makes the format popular for partition walls, ceiling linings and refurbishment work. It does not mean the entire sheet is thinner: the taper is confined to its factory-finished long edges.

For everyday drylining, compare Knauf Wallboard and Gyproc Wallboard. Listed specialist choices include Knauf Fire Panel and Gyproc fire-rated wallboard for appropriate tested fire-resisting systems; Knauf Soundshield Plus for acoustic lining systems; Knauf Moisture Panel and Siniat Moistureshield for specified moisture-resistant applications; and foil-backed Knauf Vapour Panel or Gyproc Duplex where a suitable vapour-control lining is required. None of these products should be assumed to provide a particular fire rating, sound reduction or moisture protection independently of the specified assembly.

The collection also contains thermal laminate and pallet-format listings. Check the individual item carefully: a thermal laminate combines plasterboard with an insulation layer and is not interchangeable with a plain wallboard. Some products are sold by the sheet, while others are explicitly priced per pallet. Review the quantity shown in the product title and the selected variant before comparing costs.

A 2400 × 1200 mm board covers 2.88 m² before openings and waste. A listed 1800 × 900 mm board covers 1.62 m². Commonly displayed thicknesses include 9.5 mm and 12.5 mm, but suitability for a ceiling or partition depends on joist or stud spacing, board orientation, number of layers and the manufacturer’s installation specification. Plan cuts and handling routes before buying: full-size sheets can be awkward to carry through narrow doors and stairways.

For a direct comparison of other board types and edge formats, browse the wider plasterboard range. For direct bonding to suitable masonry, explore plasterboard adhesive; for fillers, finishing products and tools, see plastering supplies. Match accessories to the selected board and installation method rather than assuming every compound or fixing is interchangeable.

Related collections: 

• plasterboard
• drywall adhesive
• plastering supplies

Jointing, fitting and frequently asked questions

Fix boards to a suitable timber or metal framework with the specified drywall screws, or use an approved dot-and-dab adhesive method on a suitable solid background. Set out sheets to minimise small offcuts and unsupported joints. Keep fixings correctly seated without breaking the face paper, and follow the board manufacturer’s requirements for spacing, perimeter details and movement joints. A plasterboard thread in a forum or general DIY guides may offer practical discussion, but project-specific technical guidance should take precedence.

For taped joints, embed compatible joint tape into the recommended compound, build up thin coats and feather the finish across the recessed area. Allow the stated drying time between coats, then sand carefully and prime before paint. At cut ends or square-edge joints there is no factory recess, so a wider feathered finish may be needed. A jointing finish can create smooth walls, but it will not conceal poorly aligned framing or moving substrates.

Why does plasterboard have a tapered edge? 

The shallow recess provides room for joint tape and filler so adjacent boards can be finished flush with the face of the sheet.

Is tapered or square edge better for plastering? 

Tapered boards are convenient for tape-and-joint finishing. Square-edge boards may be suitable where a full plaster skim is specified; follow the chosen finishing system.

Should I choose 9.5 mm or 12.5 mm? 

Neither thickness is universally better. Select the thickness specified for the wall or ceiling construction, taking account of support centres and performance requirements.

How wide is the tapered section? 

The width varies by manufacturer and board type. Consult the product datasheet rather than relying on a universal measurement.

Can I use dot and dab with these boards? 

Certain boards may be fixed using an approved plasterboard dot-and-dab system on suitable masonry. Check the board, adhesive and substrate requirements, including dab thickness and perimeter support, before starting.

Can I screw directly into masonry? 

Normally a suitable proprietary fixing system or framing arrangement is required; ordinary drywall screws are intended for approved timber or metal supports, not direct masonry fixing.

Do fire-rated boards guarantee a fire rating? 

No. Fire resistance belongs to a tested wall or ceiling system with its specified layers, supports, fixings and joint details.

Can moisture-resistant board be used in a shower? 

Moisture resistance does not make a gypsum board waterproof. Wet areas require a suitable specified lining and waterproofing or tanking system.