35mm Galvanized Steel Washers for Rigid Insulation Fixing

Product Overview

High-quality, 35mm diameter washers specifically designed for securing rigid and semi-rigid insulation boards. These discs provide a large surface area to distribute the clamping load, preventing the fixing from pulling through or damaging soft insulation materials.

Commonly used in conjunction with screws or masonry nails, these discs are ideal for securing PIR boards, mineral wool, and polystyrene to internal or external walls, ceilings, and soffits. Their robust galvanized construction ensures they provide a long-lasting, stable fixing that maintains the thermal integrity of the building envelope.

Key Features & Benefits

Anti-Pull Through: The 35mm diameter provides a wide footprint to securely hold insulation boards without tearing the foil or foam surface.
High-Grip Design: Features a slightly dished profile and perforated surface to provide a superior mechanical bond with adhesives or base coats.
Corrosion Resistance: Manufactured from galvanized mild steel to protect against rust and oxidation in damp environments.
Universal Compatibility: Can be used with a wide range of fixings, including timber screws, masonry nails, and concrete screws.
Structural Integrity: Essential for ensuring insulation boards remain flush against the substrate, preventing air gaps and thermal bridging.