Roofing Sheet Fixings & Fittings
(16 Products)Roofing sheet fixings and fittings are essential, non-negotiable components for any successful roofing sheet installation. Far from being mere accessories, these items - ranging from specialised screws and buttons to flashings, fillers, and closures - provide the critical functions of securing sheets against wind and structural loads, creating durable weatherproof seals at joints and penetrations, and ensuring the overall longevity of the roof.
What Are Roofing Sheet Fixings & Fittings?
Roofing sheet fixings and fittings encompass a wide array of products designed to install and finish sheet roofing systems, particularly common materials like polycarbonate, clear PVC, or corrugated sheets used for carports, canopies and outbuildings.
Fixings, such as specialised screws or fixing buttons with sealing washers, provide the secure attachment points, while fittings like profiled eaves fillers, edge trims (like F-sections or closures), wall flashings, and sealing tapes are crucial for weatherproofing gaps, protecting sheet edges, and achieving a neat, professional finish. Each component serves a specific purpose in ensuring the roof is secure, watertight, and durable.
The Importance of Correct Fixings & Fittings
Using purpose-designed components for your specific roofing sheet system is critical for several reasons:
- Structural Security: Provides reliable fastening against wind uplift, snow loads, and general structural stresses.
- Weatherproofing: Creates watertight seals at fixing points, sheet edges, and junctions with walls or other roof elements, preventing leaks.
- Material Compatibility: Allows for natural material behaviours like thermal expansion and contraction (especially important for polycarbonate sheets), preventing stress fractures or buckling.
- Longevity: Protects vulnerable sheet edges, prevents premature failure due to incorrect fixing methods, and contributes to the overall lifespan of the roof.
- Ease of Installation: Designed to work together as a system, often simplifying the installation process.
- Professional Finish: Ensures neat edges, sealed joints, and covered fixings for enhanced aesthetics.
Installation Tips
- Follow Manufacturer Guidance: Always adhere to the specific instructions provided by the roofing sheet and fixing/fitting manufacturers.
- Allow for Expansion: Polycarbonate sheets expand and contract significantly with temperature changes. Ensure fixing holes are oversized appropriately and fixing buttons/screws are not overtightened, allowing movement.
- Correct Washer Compression: Tighten fixings so that the washer creates a seal but is not squashed or distorted, which can lead to leaks or damage the sheet.
- Seal Tapes Correctly: Ensure tapes are applied cleanly to the correct edges of multiwall sheets before fitting closures or inserting into glazing bars.
- Profile Matching: Ensure eaves fillers match the specific profile of your corrugated sheets for an effective seal.
Our Range of Roofing Sheet Fixings & Fittings
At Materials Market, we stock a curated selection of essential components primarily for polycarbonate and clear corrugated sheet roofing systems:
Fixings
- Clear Corrugated Sheet Fixing Screws (10/Pack)
- 10mm White Fixing Buttons (10/Pack)
- 16mm White Fixing Buttons (10/Pack)
Glazing System Components
- 10-25mm White Rafter Supported Bar (3000mm)
- 10-25mm White Rafter Supported Bar (4000mm)
- White Rafter Bar End Cap
- 10mm PVC White F Section (3000mm)
- 10mm PVC White F Section (4000mm)
- 16mm PVC White F Section (3000mm)
- 16mm PVC White F Section (4000mm)
Sealing & Finishing
- 3" PVC Wall Flashing
- 762mm Eaves Fillers (6/Pack)
- 10mm White Sheet Closure (2100mm)
- 16mm White Sheet Closure (2100mm)
- Polycarbonate Sheet Tape Pack 10m
- Polycarbonate Sheet Tape Pack 16m
Frequently Asked Roofing Sheet Fixings & Fittings Questions
What Is The Difference Between Sealing Tape And Breather Tape For Multiwall Polycarbonate?
It's crucial to use both correctly. Solid Sealing Tape (often foil) is applied to the open flutes at the top edge (highest point) of the sheet to completely seal it against water, dust, and insects. Breather Tape (vented) is applied to the bottom edge (eaves/lowest point) to block insects and dust but allow any condensation that forms inside the flutes to drain out, preventing algae growth and maintaining clarity.
Do I Need To Pre-Drill Holes In Polycarbonate Sheets For Fixing Buttons Or Screws?
Yes, absolutely. You must pre-drill holes in polycarbonate sheets before inserting screws (either directly or through fixing buttons). Crucially, these holes need to be oversized (typically 2-4mm larger than the screw shank diameter) to allow the sheet to expand and contract freely with temperature changes. Drilling the correct size pilot hole is vital to prevent stress cracking.
