Does polyurethane rigid foam waterproof and thermal insulation integrated board need maintenance?

Polyurethane rigid foam waterproof and thermal insulation integrated panels require maintenance. Although they have excellent waterproofing, insulation and durability properties, during long-term use, performance may still be degraded or damaged due to environmental factors, construction defects or external forces. The following is a detailed description from the three aspects of maintenance necessity, maintenance content and maintenance cycle:

1. Necessity of maintenance

Extend service life

Although polyurethane rigid foam materials are resistant to aging, if they are exposed to ultraviolet rays, temperature changes or chemical corrosion environments for a long time, surface powdering, cracking or insulation performance degradation may occur. Regular maintenance can slow down the aging rate and extend the service life of the board.

Maintain waterproof performance

If the waterproof layer is damaged due to construction defects (such as improper joint treatment) or external force damage (such as mechanical impact), it will cause water seepage problems and affect the safety of the building structure. Maintenance can detect and repair leaks in time.

Ensure thermal insulation effect

If the panels are loosely installed, have seams cracked due to thermal expansion and contraction, or if the surface is contaminated (such as dust accumulation), the thermal insulation performance may be reduced. Maintenance restores the sealing and thermal properties of the board.

Comply with specification requirements

According to specifications such as the 'Construction Quality Acceptance Standard for Building Energy Saving Projects' (GB 50411-2019), the building insulation system needs to be inspected regularly to ensure that its performance meets the design requirements.

2. Maintenance content

Appearance inspection

Surface integrity: Check the board for cracks, bubbling, peeling or deformation.

Seam sealing: Check whether the board seams and anchors are well sealed, and whether there are any signs of water seepage.

Protective layer status: If there is a protective coating on the surface of the board (such as plaster mortar, ceramic tiles), check whether the coating is cracked or hollowed.

Performance testing

Thermal insulation performance: Use an infrared thermal imaging camera to detect the surface temperature distribution of the board to determine whether there are thermal bridges or insulation defects.

Waterproof performance: Conduct a water spray test on suspected leakage points to confirm the integrity of the waterproof layer.

Cleaning and maintenance

Surface cleaning: Regularly remove dust and debris on the surface of the board to avoid affecting the thermal insulation effect.

Drainage system inspection: Make sure the roof drainage slope meets the design requirements and the drainage outlets are not blocked.

partial repair

Crack repair: Small cracks can be filled with polyurethane sealant; for larger cracks, the damaged part needs to be cut and the board re-pasted.

Seam treatment: Re-glue and seal loose board seams to ensure the sealing of the seams.

Anchor reinforcement: Check whether the anchors are loose or corroded, and replace or reinforce them if necessary.

3. Maintenance cycle

daily inspection

Frequency: Once every quarter or before the rainy season.

Content: Appearance inspection, drainage system cleaning.

Annual maintenance

Frequency: Once a year.

Content: performance testing (such as infrared thermal imaging testing), partial repair, cleaning and maintenance.

Special situation maintenance

After extreme weather: such as heavy rains, typhoons, and earthquakes, it is necessary to immediately check whether the panels are damaged.

During decoration or renovation: If the building facade is renovated, check whether the panels are damaged.

4. Maintenance precautions

Professional operation

Maintenance must be performed by professionals to avoid secondary damage caused by improper operation.

Use standard repair materials (such as sealants and anchors that are compatible with the original panels).

Security protection

Safety belts, non-slip shoes and other protective equipment are required when working at heights.

Avoid performing maintenance on rainy or windy days.

record archiving

After each maintenance, it is necessary to record the inspection content, repair parts and material usage, and establish a maintenance file.