Insulation Fixings

Choose engineered insulation fixings that are suitable for external wall insulation. Select anchors, screws, and washers to match your insulation materials, substrate, and insulation thickness so the board is held securely and thermal performance is protected.

Insulation fixings for external wall insulation systems

In external wall insulation (EWI), fixings must provide reliable load transfer while limiting thermal bridging. Our range covers concrete substrates and common walls in construction, with lengths to suit different insulation types and thicknesses. Correct selection helps improve energy efficiency and supports compliance with building regulations.

What are insulation fixings?

They are purpose designed anchors and screws used to fix an insulation board or rigid foam boards to the wall. A typical fixing includes an anchor body, a screw or pin, and a head or separate washers that spread load on the surface. Systems are designed to be corrosion resistant, fast to install, and secure once fixed.

Types of insulation fixings

Fixing choice depends on the substrate, the insulation thickness, and the board type. You can view the full range of insulation fixings and filter by size, anchor type, and applications.

Masonry fixings

These anchors are designed for concrete, brick, and block. They penetrate the substrate to the specified depth and clamp the insulation boards firmly against the wall. Pair with appropriate washers where required to ensure a flat finish.

Fixings for different insulation types

Insulated fixings are available for EPS, mineral wool, and PIR. Head design and anchor type can differ to suit rigid foam boards versus fibrous insulation materials. Always match the product to the insulation thickness and board density.

Applications of insulation fixings

Use during installation of EWI systems, on façades, plinths, and gable walls. Fixings can also be specified for insulated plasterboard in internal retrofits where mechanical fixing is required alongside adhesive.

What can I use to hold insulation in place?

Use purpose made anchors with screws and compatible washers. The anchor type and lengths depend on the substrate and the insulation thicknesses in the build up. Where space is tight around services, choose slim heads designed for thin coats.

What are the best fixings for insulated plasterboard?

On sound concrete or masonry, select mechanical anchors compatible with insulated boards. Some projects use a combined method (adhesive plus mechanical fixing) to ensure the board is fully secure—follow the system guidance for the process.

Installation and techniques

Set out fixings per the system design, drill the substrate to the stated depth, then insert the anchor and drive the screw until the head sits flush. Ensure the board remains flat and avoid overdriving, which can crush materials and reduce pull-out values. Where needed, add accessories such as thermally optimised caps or supplementary washers.

How to screw into external insulation?

Do not screw into insulation alone. Fix through the insulation into the wall using the correct anchor so the load is carried by the substrate. This helps the system respond correctly to wind load and movement.

What do I use to hang insulation?

For façade works, use anchors designed for the application and the substrate. Select the correct size to suit the board thickness and confirm the load rating where additional weight is expected.

Benefits of using high quality insulation fixings from EWI Store

• Engineered to reduce thermal bridging and maintain thermal performance.
• Options for concrete and mixed substrates, with lengths for a wide range of thicknesses.
• Corrosion resistant components for long service life on external walls.
• Compatible with our adhesives and base coats and finishing systems.

Shop insulation fixings online

Browse insulation fixings, compare anchor types, select sizes, and add items to your basket. Product pages show stock status, price ex VAT and inc VAT, and delivery options to your postcode. If you need a formal quote or lead-time confirmation for larger projects, our team can respond quickly.

Tools and related products

Complete your setup with rendering tools and fibreglass mesh for the reinforced base. Good coordination of fixings, materials, and installation steps helps ensure a dependable finish.