PC Solid Sheet Installation Guide

01Pre-Drilling Requirements

• Pre-drill oversized holes to accommodate thermal expansion and contraction
• Screw holes must be at least 5 cm from sheet edges
• Sheet overhang must not exceed 10 cm
• For arched installations, fasten only at the two base ends. Do not drill at the crown – use pressure strips instead

02Hole Diameter & Screw Spacing

• Hole diameter should be at least twice the screw diameter (e.g., >10 mm hole for 5 mm thick sheet)
• Recommended screw spacing:
  • 2-6 mm thickness → 40-60 cm spacing
  • 7-12 mm thickness → 60-80 cm spacing

03Installation Best Practices

• Do NOT over-tighten screws – leave approximately 1 mm clearance to allow for sheet movement
• Use silicone rubber washers only – do NOT use PVC washers!

01Gap Requirements at Joints

Align sheets on the frame with expansion gaps at joints: 2-3 mm minimum

Recommended joint gap by sheet thickness:

• 6 mm thickness → 4-5 mm gap (up to 10 mm for long joints)
• 6-8 mm thickness → 12 mm gap
• 9-12 mm thickness → 12-18 mm gap

02Apply Sealant

Apply neutral cure structural sealant or neutral silicone at joints. Never use acidic or alkaline sealants.

03Install Pressure Strips

Install aluminum pressure strips over the joints. Ensure uniform pressure distribution across the entire joint area.

04Secure with Screws

Fasten strips with screws. Apply additional sealant on both sides for enhanced waterproofing (optional).