Precautions for using J-type rock wool thermal insulation and decorative integrated panels

During the construction and use of J-type rock wool thermal insulation and decorative integrated boards, it is necessary to focus on material selection, construction environment, process flow, safety protection and later maintenance. The specific precautions are as follows:

1. Material selection and acceptance

1. Rock wool performance requirements

• Use hydrophobic rock wool (with added hydrophobic agent) to ensure that the water absorption rate meets the external wall insulation standards and avoid hollowing out and deformation of the board caused by water absorption and expansion.

• It is recommended that the density of rock wool be controlled at 80-120 kg/m³ to optimize thermal insulation performance; the thickness should be selected according to design requirements to ensure the thermal insulation effect.

• Check the material's factory certificate, inspection report and retest report to ensure that the fire protection performance reaches Class A standards.

2. Compatibility of auxiliary materials

• Adhesives, anchors, sealants and other auxiliary materials must be compatible with rock wool boards to avoid chemical corrosion or bonding failure.

• The pull-out force of the anchor bolt must meet the design requirements, and the chemical anchoring agent must be adapted to the base material (such as concrete or masonry).

2. Construction environment control

1. Temperature and humidity requirements

• The construction environment temperature should not be lower than 5°C, and antifreeze measures need to be taken for the adhesive in winter; operations should be stopped when the wind force exceeds level 5.

• Rainproof measures must be taken during construction in the rainy season to prevent rainwater from penetrating into the base layer or board joints and affecting the thermal insulation performance.

2. Basic treatment standards

• The base plaster layer must be smooth, dry, and free of hollows. The surface flatness shall be measured with a 2m ruler and the error shall be ≤5mm, and the yin and yang angle straightness error shall be ≤5mm.

• The hollow and weathered parts of the old wall need to be removed, filled and leveled, and then the underlying adhesive should be applied to enhance the bonding performance.

3. Construction process

1. Typesetting and elastic lines

• Pop up the vertical control lines, horizontal control lines and grid lines according to the design drawings to ensure the accurate installation position of the panels.

• The staggered seam paving method is adopted, and the gap between the panels is ≤5mm to avoid the thermal bridge effect; the four corners of the door and window openings need to be cut into whole panels to avoid splicing.

2. Gluing and anchoring

• Pasting method: Choose point sticking method (flatness>5mm/2m) or strip sticking method (flatness≤5mm/2m) according to the flatness of the base layer, and the bonding area is ≥50%.

• Anchorage method: mechanical anchoring is suitable for lightweight boards, chemical anchoring is suitable for heavy boards; anchoring depth is ≥25mm for concrete base and ≥50mm for masonry base.

• Arrangement of anchor points: A row of supporting pendants (such as 40mm × 40mm galvanized angle steel) is set up on each floor. The longitudinal spacing of the anchors is 300mm and the transverse spacing is 400mm, arranged in a plum blossom shape.

3. Seam processing

• After cleaning the board seams, apply silicone waterproofing agent, embed polystyrene foam strips, and squeeze out weather-resistant silicone sealant.

• The sealant must be full and even, without bubbles or cracks; masking paper must be pasted on the board seams to ensure that the glue seams are straight.

4. Safety and protective measures

1. personnel safety

• Construction workers need to wear safety helmets, gloves, protective glasses and other equipment to avoid falling objects or mechanical injuries from heights.

• Electric hanging baskets or scaffolding must be used for high-altitude operations, and safety nets and anti-fall devices must be installed.

2. Environmental protection requirements

• Construction waste must be classified and recycled to avoid environmental pollution; adhesives, sealants, etc. must be prepared as needed to avoid waste.

• Open flame operations are prohibited on site to prevent rock wool fibers from burning or producing harmful gases.

5. Later maintenance and upkeep

1. Regular inspection

• Inspect at least twice a year, focusing on whether the board has cracks, bulges, or falling off; whether the anchors are loose.

• Check the drainage system before the rainy season to ensure that rainwater drains smoothly and prevents water from seeping into the insulation layer.

2. Cleaning and Restoration

• Use a soft brush or damp cloth to wipe the surface and avoid using acidic or alkaline cleaners; high-pressure water gun cleaning is prohibited.

• Small cracks should be repaired with caulking agent, and the entire board should be replaced for large-scale damage, and the sealing and connection firmness of the new board should be ensured.

3. environmental adaptation

• Cold areas need to strengthen joint waterproofing to prevent plate damage caused by freezing and thawing cycles; high temperature areas need to pay attention to the weather resistance of sealants to avoid aging and cracking.