Drywall Construction Timber Stud Cement Board Screws - PH - Countersunk Wafer - Twin-Cut - Exterior - Silver Organic

Exterior-Grade Twin-Cut Screws for Fixing Cement Boards to Timber Framework

These Drywall Construction Cement Board Screws are engineered for securely fixing fibre cement and tile backer boards to timber studs in external and wet area applications. Featuring a twin-cut thread design for fast insertion, a PH (Phillips) drive, and a countersunk wafer head, they offer a flush finish and superior holding power. The exterior-grade silver organic coating ensures corrosion resistance in exposed environments, making them ideal for cladding, facades, and bathroom installations.

Key Features & Benefits

• Twin-Cut Thread: Reduces driving torque and enhances grip in timber for cleaner, faster insertion.
• Countersunk Wafer Head: Provides a flat, flush finish that won't interfere with board finishes or coatings.
• PH Drive: Phillips recess reduces cam-out and ensures efficient power tool compatibility.
• Silver Organic Coating: Offers enhanced corrosion resistance for long-term exterior or wet area use.
• Ideal for Cement Boards: Compatible with fibre cement panels, tile backers, and similar sheathing materials.

Product Details

• Head Type: Countersunk Wafer
• Drive Type: Phillips (PH)
• Thread Type: Twin-cut, coarse thread for timber substrates
• Finish: Silver Organic Coating
• Application: Exterior or interior use – ideal for bathrooms, wet rooms, and façades
• Compatible Materials: Timber studs, cement board, tile backer boards

Application Instructions

1. Position Board: Align cement board to timber frame.
2. Drive Screws: Use a PH bit to drive screws flush with the board surface. Pilot holes may be used in hardwoods if required.
3. Spacing: Follow manufacturer recommendations, typically 200–300mm screw centres.

Limitations

• Not suitable for use with steel or metal framing – use self-drilling screws instead.
• Ensure screw length provides adequate penetration into timber for a secure hold.

Health & Safety

Use appropriate PPE including gloves and eye protection. Follow all board manufacturer guidelines for handling and fixing cement-based products.