Spacing Control Standards for GRC Installation — Qinglong GRC Precision Spacing System

GRC installation spacing falls into three categories: panel joint width (5-8mm), distance from wall (20-30mm), and expansion joint spacing (≤12m). Panel joint width must account for thermal deformation (ΔL=α·L·ΔT), construction tolerances, and visual effects. Qinglong GRC uses computer simulation of thermal deformation to recommend appropriate joint widths, ensuring the unity of safety and aesthetics.

Spacing standards: horizontal joint width 5-6mm, vertical joint width 6-8mm; distance from wall 20mm (interior insulation), 30mm (exterior insulation); expansion joint spacing ≤12m (horizontal), ≤18m (vertical). One project constructed strictly in accordance with Qinglong GRC spacing standards withstood a temperature range of -20°C to 40°C with no cracking or deformation issues.

Panel Joint Width Design

Account for thermal deformation; allow for construction tolerances; balance visual effects; meet sealing requirements. Scientific design ensures safe use.

Determining Distance from Wall

Influence of insulation layer thickness; installation adjustment needs; ventilation and drainage requirements; space for inspection and maintenance. Proper distance enhances performance.

Expansion Joint Installation

Correspondence with structural expansion joints; thermal deformation calculations; consideration of material properties; improved construction measures. Correct joint placement prevents cracking.

Tolerance Control Standards

Panel joint width tolerance ≤1mm; joint straightness ≤2mm/5m; panel surface flatness ≤2mm/2m; elevation tolerance ≤3mm. Strict tolerance control ensures aesthetics.

Precise spacing ensures quality. With scientific design, Qinglong GRC achieves the unity of safety and aesthetics.