How to use J-shaped rock wool insulation and decorative integrated board

How to use J-shaped rock wool insulation and decorative integrated board

The J-type rock wool thermal insulation and decoration integrated board integrates the functions of thermal insulation, decoration, waterproofing, fire protection and other functions. It is suitable for exterior wall insulation and decoration projects of new buildings and energy-saving renovation of exterior walls of existing buildings. Its usage covers construction preparation, installation steps, quality acceptance and maintenance, as follows:

1. Construction preparation

Design briefing

Before construction, the designer and the construction team need to conduct a detailed technical briefing to clarify the structure, construction requirements and key node processing methods of the integrated panel.

According to the building facade design drawings, the integrated panels are laid out and designed in depth to ensure high utilization of the panels and beautiful appearance, and the locations of expansion joints and decorative joints are marked.

Material confirmation

Confirm the model, specification, and quantity of the integrated board, as well as the type and quantity of auxiliary materials such as adhesives, sealants, and anchors.

Check whether the surface of the integrated board is smooth and undamaged, whether the edges are neat, and whether the decorative surface layer is firm.

Grassroots processing

Clean the oil, floating dust, and loose layers on the wall surface to ensure that the surface is smooth, dry, and free of open water.

Repair cracks and holes in the wall and level them with 1:3 cement mortar. The thickness should not be less than 10mm and the flatness error should not exceed 3mm/2m.

In a humid environment, the base layer needs to be coated with a moisture-proof agent to prevent moisture penetration from affecting the insulation effect.

2. Installation steps

Elastic line release

According to the design drawings, pop up horizontal and vertical control lines on the wall to mark the locations of expansion joints and decorative joints.

Hang vertical reference lines at key locations such as the large corners of the building's exterior walls, door and window openings, etc. to ensure the verticality of the integrated panel installation.

Mounting bracket

Install brackets at a position not less than 150mm above the water slope. The brackets can be made of galvanized angle steel or aluminum alloy, and the spacing should not be greater than 600mm.

The bracket is fixed on the base wall with expansion bolts to adapt to the settlement requirements of the building structure and ensure that the bracket is level and firm.

Paste integrated board

Preparation of adhesive: Mix the special adhesive powder and clean water in proportion (the liquid amount is about 20% of the powder), stir for 5-7 minutes until the consistency is moderate, leave it for 5 minutes to mature, and stir again before use.

Apply adhesive: Use dot-frame method cloth glue on the back of the integrated board, and the bonding area should not be less than 60% to ensure a strong bond.

Paste the integrated board: Paste the integrated board on the wall and flatten it with a 2m ruler to ensure that the board is flat and firmly bonded. The seam between the boards does not exceed 1mm and the height difference does not exceed 1.5mm.

Install anchors

Insert the anchors into the reserved holes in the integrated board and tap lightly with a hammer to secure the anchors to the wall.

There should be no less than 2 anchor points on each side of each board. The number and location of anchors must meet the design requirements to ensure a stable connection between the integrated board and the wall.

Board seam treatment

Insert a sponge strip with a diameter 2mm larger than the gap width and a depth of 10-20mm in the gap between the integrated boards to prevent the sealant from penetrating into the board.

Fill the gaps between the boards with sealant to ensure they are tight and prevent water seepage. The sealant should be full, even, and free of bubbles and cracks.

Installation accessories

Install accessories such as doors, windows, and vents as needed to ensure that the accessories are firmly connected to the integrated panel and well sealed.

Cut 'L' shaped integrated panels at the four corners of the door and window openings and lay them. The distance between the joints and the surroundings of the openings should be no less than 200mm to enhance the local thermal insulation effect.

3. Quality acceptance

Flatness inspection

Use a 2m ruler to check the flatness of the integrated board, and the error shall not exceed 3mm.

Check the height difference between the board seams and the error shall not exceed 1.5mm.

Anchor inspection

Check whether the number and position of anchors meet the design requirements and ensure that each board is firmly anchored.

Sealing glue inspection

Check whether the sealant is full and even, without bubbles or cracks, and ensure that the board seams are well sealed.

Processing of acceptance results

Make rectifications to the parts that fail the acceptance inspection until they meet the specification requirements.

4. Maintenance

Cleaning and maintenance

Regularly wipe the surface of the integrated board with a damp cloth or neutral detergent to keep it clean and beautiful.

Avoid using sharp objects to scratch the surface of the integrated board and affect the decorative effect.

Repair and replacement

If the sealant is found to be peeling off or cracking, it should be repaired and replaced in time to prevent water seepage from affecting the thermal insulation performance.

Regularly check whether the anchors are loose. If they are loose, tighten them in time to ensure a stable connection between the integrated board and the wall.