What is the GRC installation spacing? Qinglong GRC installation joint width control standards

The GRC installation joint width should be determined comprehensively based on panel dimensions, thermal deformation, construction tolerances, and other factors, generally controlled at 6-12mm. Joint widths that are too small may crack due to thermal deformation, while overly wide joints affect aesthetics.

In the Shenzhen Pingshan High-Tech Zone project, Qinglong set the installation joint width at 10mm based on local climate characteristics. For summer installation, 8mm was reserved, and 10mm in winter, to accommodate thermal deformation. Special joint width control gauges were used to ensure uniform and consistent joint widths. After withstanding two winters and summers, the panel joints show no anomalies, proving that the joint width setting is reasonable.

Joint Width Calculation for Thermal Deformation

Calculate the deformation based on the local annual temperature range; for the Guangdong region, 8-10mm is recommended. Large-area panels require appropriately wider joints. Expansion joints should be set at internal and external corners. Calculations need to account for long-term deformation.

Construction Tolerance Control Requirements

Layout tolerance is ±1mm, and installation tolerance is ±2mm. Cumulative errors must be absorbed within the joint width. Large-area installations require adjustment joints. Tolerance control ensures uniform joint widths.

Aesthetic Joint Width Design

For public buildings, 8-12mm is recommended; for residential buildings, 6-8mm. Horizontal joint widths can be slightly larger than vertical joints. Special shaped areas require separate design. Joint widths must coordinate with the architectural style.

Functional Joint Width Determination

Areas with high waterproofing requirements should have appropriately wider joints. Seismic joints should be set according to standards. Deformation joints should correspond to structural joints. Functional requirements take priority.

Reasonable joint width design requires professional calculation and experience. With its extensive experience, Qinglong GRC provides customers with optimal solutions.