Installation method of polyurethane rigid foam insulation decorative integrated board

Polyurethane rigid foam thermal insulation and decorative integrated panels (referred to as 'integrated panels') integrate thermal insulation, decoration, waterproofing and other functions. They have the advantages of convenient construction, energy saving and environmental protection, and are widely used in building exterior wall insulation and decoration projects. The following are its detailed installation methods and precautions:

1. Preparation before installation

Material inspection

Confirm that the specifications, model, and color of the integrated board are consistent with the design requirements, and that there is no damage, deformation, or color difference on the surface.

Check whether the supporting anchors (such as expansion bolts, special clamps), sealants, caulking materials, etc. are complete and of qualified quality.

Check whether the thickness, thermal conductivity and other performance parameters of the board meet the design standards.

Grassroots processing

Base layer requirements: The base wall surface should be smooth, dry, solid, and free of defects such as hollows, cracks, and oil stains.

Clean the base layer: Use a broom or high-pressure air gun to remove floating dust and loose particles from the wall. If necessary, polish with sandpaper or wash and dry.

Leveling treatment: If the flatness deviation of the base layer exceeds 5mm, cement mortar or special leveling materials need to be used for leveling to ensure that the surface flatness is ≤3mm/2m.

Waterproof treatment: Apply waterproof coating or lay waterproof membrane on the surface of the base layer to prevent moisture penetration from affecting the insulation effect.

Spring line division

According to the design drawings, pop up horizontal control lines and vertical grid lines on the base layer to determine the installation position and layout method of the panels.

When typesetting, the closing of door and window openings, yin and yang corners, etc. should be considered to avoid splicing of small pieces of board.

Installation tool preparation

Prepare electric drill, impact drill, cutting machine, ink fountain, level, ruler, rubber hammer, utility knife and other tools.

If the adhesive anchor bonding process is used, special bonding mortar or adhesive needs to be prepared.

2. Installation method

1. Adhesive anchor combined installation method (recommended)

Applicable scenarios: Suitable for most building exterior walls, especially high-rise buildings or areas with high wind pressure.

step:

Apply bonding mortar:

Apply special bonding mortar evenly on the back of the board, with a thickness of about 3-5mm, and use strip bonding or dot-frame bonding to ensure that the bonding area is ≥ 40%.

When pasting, squeeze from the edge of the board to the middle to expel air and avoid hollowing.

Temporarily fixed:

Paste the board to the base layer according to the spring line position, and tap lightly with a rubber mallet to adjust the flatness.

Use temporary supports (such as wooden squares) to secure the panels to prevent them from sliding or shifting.

Install the anchor:

Drill holes at the edge and middle of the plate, insert expansion bolts or special clamps, and the anchoring depth is ≥30mm.

The number of anchors is determined according to the plate specifications and design requirements, generally no less than 6 per square meter.

Adjustment and fixation:

Use a level and ruler to check the flatness and verticality of the board. The deviation is ≤2mm/2m.

Adjust the anchor tightness to ensure the board is securely fastened.

2. Dry hanging installation method

Applicable scenarios: Suitable for steel structure buildings or projects that require high construction speed.

step:

Install keel:

Install metal keels (such as aluminum alloy or galvanized steel keels) on the base layer. The distance between the keels is determined according to the plate specifications, generally ≤600mm.

The connection between the keel and the base is fixed with expansion bolts to ensure firmness.

Hanging panels:

Install special pendants (such as L-shaped or Z-shaped clips) on the back of the board, and the spacing between the pendants should match the spacing between the keels.

Hang the plate on the keel through the pendant, adjust the position and then fix it.

Sealing treatment:

Apply sealant to the joints of the boards to prevent rainwater from penetrating.

3. Paste installation method (only for low-rise buildings)

Applicable scenarios: Suitable for low-rise buildings or areas with low wind pressure.

step:

Apply bonding mortar directly to the back of the board and stick it to the base layer without anchors.

When pasting, ensure that the bonding area is ≥60%, and strengthen temporary fixation and support.

3. Seam treatment

Plate seam treatment:

The width of the joints between the boards should meet the design requirements (generally 5-10mm) and be filled with special caulking material.

The caulking material should be compatible with the board material to avoid chemical reactions between different materials.

Sealant construction:

After the caulking material dries, apply sealant to the seams of the boards to form a continuous sealing layer.

The sealant should be full, smooth, without bubbles or cracks, and the width to depth ratio should be 2:1.

Yin and Yang angle processing:

The yin and yang corners are closed with special corner guards or finished yin and yang corner pieces to ensure straight and beautiful lines.

**4. Closing and detail processing

Door and window opening closing:

Install special closing strips around the door and window openings to seamlessly connect with the panels to prevent rainwater penetration.

Parapet closing:

The top of the parapet wall is closed with waterproof membrane or metal cover, and a drip line or eagle mouth is made at the bottom to prevent rainwater from pouring back.

Deformation seam treatment:

Install a special deformation joint device at the deformation joint to ensure that the plate is not damaged during deformation.

**5. Post-installation inspection and acceptance

Appearance inspection:

Check whether the surface of the board is smooth, scratch-free, pollution-free, and the color is uniform.

Check whether the seams are straight and whether the sealant is full and not cracked.

Performance testing:

Use an infrared thermal imaging camera to detect the temperature distribution on the surface of the board to ensure there is no thermal bridge.

Conduct a pull-out test to check whether the bonding strength and anchor tensile bearing capacity meet the design requirements.

Acceptance criteria:

The flatness deviation of plate installation is ≤2mm/2m, and the verticality deviation is ≤3mm/2m.

The joint width deviation is ≤2mm, and the sealant thickness deviation is ≤1mm.

The tensile bearing capacity of anchors is ≥0.6kN/piece.

**6. Precautions

Construction environment:

The construction temperature should be between 5-35℃, and construction should be avoided in rainy, snowy or windy weather.

When the humidity is too high, moisture-proof measures must be taken to prevent the board from being deformed by moisture.

Security protection:

Construction workers need to wear protective equipment such as safety helmets and safety belts, and set up safety nets when working at heights.

Wear a dust mask and goggles when cutting boards to prevent dust inhalation and splashing from hurting people.

Finished product protection:

During the installation process, avoid sharp objects from scratching the surface of the board, and handle it with care when handling.

After construction is completed, cover the panels with plastic film or protective boards to prevent contamination or damage.

Fire prevention measures:

Polyurethane rigid foam is a flammable material. Fire extinguishing equipment must be equipped at the construction site, and open flame operations are strictly prohibited.

A fireproof isolation belt needs to be set up between the board and the base layer to improve the fireproof performance.