Description
Multiwall Polycarbonate Fasteners (1-inch) are specially designed screws with neoprene washers that securely attach 6mm (1/4-inch) multiwall polycarbonate panels to framing materials. These fasteners provide a quick and easy way to install greenhouse panels, patio covers, and skylight glazing while preventing leaks and panel damage. The washer seals against moisture penetration while allowing for proper thermal expansion and contraction.
ShapesPlastics' 1-inch fasteners are engineered specifically for 6mm twinwall polycarbonate sheets, with the correct length to penetrate the panel and secure it to wood or metal framing without over-compression. The hex head design allows for easy installation with a standard drill or driver. Self-drilling point eliminates the need for pre-drilling in most applications, saving time during installation. Essential for proper multiwall panel installation to ensure weathertight, long-lasting performance in greenhouse, patio cover, carport, and skylight applications.
Features
- 1-inch length for 6mm multiwall panels
- Includes neoprene washer for weatherproof seal
- Self-drilling point for easy installation
- Hex head for drill/driver installation
- Prevents panel cracking and over-compression
- Allows for thermal expansion/contraction
- Works with wood and metal framing
- Weather-resistant construction
- Designed for outdoor use
- Professional-grade durability
Applications of 1-Inch Multiwall Fasteners
- 6mm Greenhouse Panel Installation
- Patio Cover Glazing
- Carport Roofing
- Skylight Installation
- Sunroom Panels
- Garden Shed Roofing
- Cold Frame Covers
- Lean-to Structures
- Pergola Roofing
- Canopy Installation
Frequently Asked Questions
How many fasteners do I need per panel?
Space fasteners 12-16 inches apart along all edges and across any intermediate supports. For a standard 4ft x 8ft panel, you'll need approximately 20-24 fasteners. Always install fasteners through both walls of the multiwall structure, never just the top skin. Follow manufacturer spacing recommendations for your specific framing layout and local wind/snow load requirements.
Will these work with 8mm or 10mm panels?
No, these 1-inch fasteners are specifically designed for 6mm (1/4-inch) multiwall polycarbonate panels. Using fasteners that are too short won't provide adequate hold, and panels may lift or blow off. For 8mm or 10mm panels, you'll need longer fasteners. For 16mm panels, use our 2-inch fasteners designed for thicker multiwall construction.
Do I need to pre-drill holes?
The self-drilling point eliminates pre-drilling for wood framing and most metal framing. However, for hard metals or precise placement, pre-drilling with a slightly larger diameter hole is recommended to allow for thermal expansion. Never overtighten - the washer should compress slightly but the panel should not be pulled down tight against the framing.
What's included with each fastener?
Each fastener includes the screw and an attached neoprene washer. The washer creates a weatherproof seal while allowing the panel to expand and contract with temperature changes. The washer also prevents the fastener from over-compressing the multiwall panel, which could cause cracking or damage to the hollow structure.
