Reliable insulation board fixings for secure façades
When installing an External Thermal Insulation Composite System (ETICS), achieving a stable and secure hold is essential. Insulation board fixings provide the necessary mechanical support to keep your insulation materials firmly attached to the substrate, preventing detachment caused by wind loads or structural movement.
Whether you are working with EPS, mineral wool, or other insulation panels, selecting the correct fastening method ensures the longevity of your façade. Our selection caters to both professional builders and dedicated DIY enthusiasts looking for dependable results.
Discover our range of insulation board fixings
In our comprehensive assortment, you will find a variety of insulation board fixings manufactured by PROTEKTOR. Depending on your specific project requirements, you can choose between classic hammer-in fixings with durable plastic nails or robust steel nails for higher load capacities. We also offer advanced screw fixings featuring 30mm or 50mm steel screws for precise depth control.
The products are available in lengths ranging from 10 cm up to 34 cm, ensuring compatibility with various insulation thicknesses. You can select standard colours like red and white, and purchase them in bulk quantities. For added convenience, we provide complete sets that include the fixings, matching rondelles, and a milling cutter for recessed installation.
How to choose the right insulation board fixings
Selecting the appropriate fixing depends largely on the substrate material and the type of insulation board you are using. Plastic nails are generally sufficient for standard EPS boards on solid concrete or solid brick, while steel nails or screw fixings are recommended for thicker mineral wool or softer substrates like aerated concrete.
Always ensure that the fixing length accommodates both the insulation thickness and the required anchoring depth in the wall. The prices for our insulation board fixings range from approximately 28.99 GBP to 478.99 GBP (as of 2026), depending on the chosen type, length, and package size.
Frequently asked questions about insulation board fixings
How many insulation board fixings do I need per square metre?
The required number typically ranges from four to eight fixings per square metre, depending on the building height, wind load zone, and the specific insulation material used. Always consult the structural guidelines of your ETICS provider for exact calculations.
What is the difference between steel and plastic nails?
Plastic nails minimise thermal bridging and are ideal for standard applications with lighter insulation boards. Steel nails offer significantly higher load-bearing capacities and are better suited for heavy materials like stone wool or challenging substrates.
When should I use screw fixings instead of hammer-in fixings?
Screw fixings provide maximum pull-out resistance and are highly recommended for problematic substrates such as perforated brick or aerated concrete. They also allow for a more controlled, flush, or recessed installation without damaging the insulation surface.
How deep should the fixings be anchored into the load-bearing wall?
The effective anchoring depth usually varies between 25 mm and 65 mm, depending on the wall material and the specific fixing model. You must add the thickness of the old plaster and adhesive layer to determine the correct overall length of the fixing.
What is the purpose of the rondelles and milling cutters in the sets?
The milling cutter allows you to create a small circular recess in the insulation board so the fixing sits below the surface. The rondelle is then placed over the fixing head, creating a seamless, thermally optimised surface that prevents ghosting marks on the finished façade.
Summary of our insulation board fixings
High-quality insulation board fixings are the foundation of any durable and structurally sound ETICS installation. By choosing the right materials and lengths, you ensure that your façade remains securely insulated and protected against external forces for years to come.
