Sheathing Board Fixings
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Select insulation board fixings that keep sheathing board and insulation boards secure on timber, steel or masonry substrates. Our range is designed for reliable installation on walls and roofs, with sizes and lengths to suit different thicknesses and applications while supporting thermal performance and energy efficiency.
Insulation board fixings for secure sheathing board installation
Use purpose designed fixings and screws to ensure proper installation of the sheathing board to studs or joists and to fix insulation boards to structural walls. Match the fixing type to the substrate, select the required embedment, and choose washers where specified to spread load and keep the surface flat. Browse insulation fixings for anchors, insulated fixings and accessories that are compatible with our systems.
What are insulation board fixings?
They are fasteners and anchors designed to secure insulation boards and related materials to a substrate. Typical products include plastic headed anchors for masonry, screws and washers for timber or steel frames, and stand off solutions for brackets. Items are available in a wide range of sizes and are supplied in boxes for site convenience.
Difference between insulation fixings and sheathing board fixings
Insulation fixings usually pass through the insulation into the structural wall to hold boards in place without crushing the face. Sheathing board fixings secure the board directly to timber or metal studs as part of the frame build up. Both are designed for strength and ease of use, but they are chosen by substrate and load rather than by appearance.
The purpose of a sheathing board in construction
Sheathing provides a stable surface for render systems on walls , helps with racking resistance, and offers a consistent base for air and weather layers. It is part of the wall build up and must be fixed correctly to ensure long term durability of the finished facade.
Is a sheathing board waterproof?
Most boards are moisture tolerant rather than fully waterproof, contributing to overall energy efficiency . The complete system provides weathering when combined with primers, base coats, mesh and finishes. Always follow the system guidance at edges, penetrations and junctions to keep water out of the structure.
The different types of sheathing board
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Fibre cement and cement bonded boards: robust surface, good workability, suited to render carrier applications.
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Gypsum fibre boards: stable and smooth where approved by the system manufacturer.
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Engineered timber boards: used on timber frame where the render system is designed for that substrate.
How to fix insulation boards to a wall
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Set out the grid and check levels and corners.
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Apply adhesive where the specification requires a combined method.
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Pre drill the substrate if anchors are specified, then insert the fixing and seat the washer flush.
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Check board alignment as you proceed, ensuring tight joints and a flat surface ready for base coat.
For drill bits and hole saws see cutting and drilling. For mesh and base materials see fibreglass mesh and adhesives and basecoats.
What screws to use for insulation board?
On timber, use wood screws with a coarse thread and a compatible washer where required. On light gauge steel, use self drilling screws that suit the rail thickness. For masonry, select anchors from the insulation fixings range rather than standard screws. Always confirm corrosion protection and length for the build up.
How many fixings per insulation board?
Follow the system specification. Layout depends on wind zone, board size and location on the facade. Perimeter zones often require a higher density than central areas to ensure the board remains secure over time.
What fixings to use on insulated plasterboard?
On masonry, a combined method is common, using adhesive plus mechanical anchors through the board into the wall to ensure they remain secure. On timber or metal framing, use the correct screws and washers for the stud material. Check that the fastener type and spacing are compatible with the board thickness.
Shop insulation board fixings and sheathing board accessories online
Explore our insulation fixings category to select anchors, screws, washers and insulated fixings designed for walls and roofs. Category pages show what is in stock and price ex VAT and inc VAT so you can add the right products to your basket. If you need help choosing the correct sizes and lengths for your project, contact our team and we will respond with guidance.