PIROUZ LTD

Fixing accessories

UK supplier of cold room panels, doors and refrigeration parts. Fast dispatch, trade prices, expert advice.

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Commercial Cold Room Fixing Accessories

High quality fixing accessories are crucial for maintaining the structural stability, thermal efficiency, and hygiene standards of commercial cold rooms, walk-in freezers, and cleanroom environments. At Pirouz Ltd, we stock a comprehensive range of purpose-designed fixing accessories built to handle the rigorous demands of temperature-controlled construction. From heavy-duty structural anchors to specialized non-conductive fasteners, our inventory ensures fast, reliable installation for trade contractors, refrigeration engineers, and commercial builders across the United Kingdom.

Securing insulated composite panels requires hardware that resists severe temperature fluctuations, high humidity, and aggressive washdown chemicals. Standard commercial screws and raw fixings often fail in sub-zero environments, creating cold bridges, moisture accumulation, and structural fatigue. Our structural fixing accessories are engineered specifically for composite panel assembly, flashing attachment, and ceiling suspension, helping you deliver long-lasting installations that comply with modern building and energy standards.

Essential Fixing Accessories for Insulated Panel Assembly

Building a robust chilled or frozen storage facility depends on choosing the correct mechanical fasteners for each joint, trim, and suspension point. Below is an overview of the core fixing accessories supplied by Pirouz Ltd for commercial and industrial projects.

Self-Drilling Tek Screws and Composite Fasteners

Self-drilling Tek screws are the industry standard for anchoring insulated sandwich panels to structural steelwork, timber, or secondary framing. Our range includes bi-metal fasteners with stainless steel heads and hardened carbon steel drill points, ensuring rapid installation without sacrificing corrosion resistance. Each screw comes fitted with an integrated vulcanised EPDM washer, which creates an airtight, watertight seal against the outer panel face to prevent moisture ingress into the insulation core.

Nylon Bolts and Thermally Broken Anchors

To eliminate heat transfer across wall and ceiling joins, thermal breaks are mandatory in low-temperature and blast freezer applications. We supply high-density nylon 66 threaded bolts, non-conductive studs, and plastic mushroom anchors. These specialized fixing accessories offer exceptional tensile strength while stopping thermal bridging, preventing point-source frost formation and condensation build-up on external panel surfaces.

Sealed Blind Rivets and Hygienic Cladding Rivets

Securing external flashings, internal corner trims, and PVC coving profiles requires low-profile fixings that maintain a clean finish. We supply A2 and A4 grade stainless steel blind rivets alongside aluminium sealed pop rivets. Sealed blind rivets feature a closed-end stem that guarantees a completely liquid-tight join, making them ideal for high-pressure food prep areas and chillers subject to frequent chemical washdowns.

Suspended Ceiling Fixings and Threaded Rod Systems

Large cold store ceiling panels require robust overhead support to prevent sag and structural deflection. Our heavy-duty ceiling fixing accessories include galvanised threaded drop rods, unistrut channel brackets, load-spreading compression plates, and adjustable turnbuckles. Designed to distribute overhead loads evenly across structural steel rafters, these components simplify height adjustment and leveling during complex ceiling installs.

Pliable Flashing Trims, Rivet Caps, and Sealant Retainers

Aesthetics and sanitation go hand in hand in food-safe environments. We stock a full line of colour-matched plastic screw caps, dome caps, hygienic snap-on trim retainers, and PVC cover strips. These accessories conceal exposed screw heads, eliminate sharp edges, and prevent food debris or airborne contaminants from settling in recessed fastener cavities.

Technical Specifications and Material Selection

Selecting the appropriate fixing accessories requires matching fastener metallurgy and load capacity to your specific operating environment. The table below outlines standard material specifications and typical site applications for our fixing products.

Fixing Type	Material Specification	Temperature Range	Primary Application
Bi-Metal Tek Screws	A2 Stainless / Carbon Steel Tip + EPDM	-40°C to +80°C	Securing wall/roof panels to structural steel framing
Nylon Threaded Bolts	High-Density Nylon 66	-50°C to +85°C	Through-panel tie rods and ceiling support isolation
Sealed Pop Rivets	A2 (304) Stainless Steel / Aluminium	-50°C to +120°C	Attaching internal flashing, coving, and trim profiles
Ceiling Compression Plates	Zinc-Plated Heavy Gauge Carbon Steel	-40°C to +60°C	Spreading drop-rod suspension loads on ceiling panels

When installing fixings into polyisocyanurate (PIR), polyurethane (PUR), or expanded polystyrene (EPS) cores, pull-out resistance depends heavily on thread pitch and anchor surface area. Our specialized panel anchors feature wider thread pitches and expanded bearing faces to maximize grip without crushing the internal foam core.

Preventing Thermal Bridging in Freezer Installations

Thermal bridging is one of the most critical challenges when designing low-temperature cold rooms and freezer stores. Standard metallic fixings act as highly efficient heat conductors, drawing warmth from surrounding ambient spaces into the chilled envelope. This local heat gain leads to localized condensation, ice buildup on structural fixings, panel delamination, and increased refrigeration compressor workload.

By specifying thermally isolated fixing accessories, installers effectively break the conductive path. High-density nylon rod couplers, insulated washers, and synthetic mushroom sleeves decouple the inner ceiling and wall linings from external support frames. Investing in non-conductive fixing hardware protects the overall energy efficiency rating of the facility and prevents long-term structural decay caused by internal freeze-thaw cycles.

Fast Dispatch, Trade Accounts, and Technical Support

At Pirouz Ltd, we understand that site delays cost money. That is why we maintain extensive stock levels of core fixing accessories, structural panel anchors, and hygienic trims at our Harlow distribution hub. Whether you require a single box of specialized stainless rivets or full fixing kits for an industrial cold store build, we offer fast nationwide dispatch and local collection services.

Trade clients benefit from competitive bulk pricing, dedicated account management, and expert technical guidance. If you are unsure which fastener combination meets the wind-load, shear, or thermal requirements of your specification, our experienced sales team is available to assist with product selection and quantity estimations.

Frequently Asked Questions

What fixings should be used to avoid thermal bridging in freezer rooms?

To eliminate thermal bridging in sub-zero freezers, use non-conductive nylon bolts, plastic mushroom anchors, or thermally broken tie rods. Where metal fasteners must pass through the panel, incorporate high-density nylon sleeves and insulating washers to isolate the warm and cold sides of the assembly.

Are stainless steel rivets mandatory for food production cold rooms?

While aluminium rivets are suitable for standard dry storage, stainless steel (A2 or A4 grade) or sealed pop rivets are strongly recommended for food production areas. They resist corrosion from aggressive washdown chemicals, high-pressure steam, and acidic organic compounds, maintaining a food-safe surface over time.

How do I select the correct length Tek screw for composite panel installation?

The total length of the Tek screw must equal the panel thickness plus the thickness of the support steelwork, plus an additional 15 to 20 millimetres to account for the drill point and thread engagement. Always ensure the screw washer compresses slightly against the outer skin without crushing the underlying insulation core.

Can I collect fixing accessories directly from your trade counter?

Yes. Trade customers and local contractors can collect fixing accessories directly from our Harlow depot located at Unit 10, Harlow Mill Business Centre, Harlow, CM20 2FD. Please call our sales desk on 02037508888 in advance to confirm stock availability and arrange fast counter pickup.

Request a Trade Quote for Fixing Accessories Today

Ready to order high-performance fixing accessories for your next cold storage build? Contact the trade specialists at Pirouz Ltd. Call our technical sales team directly on 02037508888 or send your job specifications through our website to receive a competitive, prompt trade quotation.