Waterproofing and damp-proofing of mobile villas require a comprehensive design encompassing structural waterproofing, material selection, construction techniques, and active damp-proofing systems to address the unique challenges posed by their mobility. The core technology must balance short-term seepage prevention with long-term durability to ensure stability in various environments.
Structural waterproofing is the fundamental line of defense for mobile villas. Exterior walls require a waterproof mortar leveling layer followed by an elastic exterior wall coating to enhance crack and seepage resistance. For dry-hanging stone or curtain wall structures, pre-embedded water-stop steel plates are necessary, with weather-resistant sealant filled at joints to block rainwater infiltration. Roof design must differentiate between flat and pitched roofs: flat roofs use non-curing rubber asphalt coating to repair the base layer, layered with TPO waterproof membrane and a ceramic aggregate drainage layer for triple protection; pitched roofs focus on eaves and gutters, using stainless steel gutters and siphon drainage systems to accelerate rainwater drainage and prevent water accumulation and leakage.
The basement, as a key area for damp-proofing in mobile villas, requires an "external defense, internal drainage" strategy. The exterior walls are covered with high-polymer self-adhesive roofing membrane, combined with impermeable concrete (impermeability grade ≥ P8), forming the first barrier. A blind drainage system with a slope greater than 3% is installed around the perimeter to guide groundwater away from the foundation. The interior walls are coated with an inorganic silicate penetrating crystallizing material to alter the capillary structure and prevent moisture infiltration. A raised floor is laid to allow for air circulation, and an electro-osmotic pulse dehumidification system is installed, using an electromagnetic field to drive water molecules to migrate outdoors, keeping the structure dry.
An active dehumidification system is a key upgrade for the mobile villa's moisture protection. A fresh air dehumidification system delivers dry air to each room through ducts, automatically starting and stopping according to humidity levels to maintain indoor humidity within a comfortable range of 40%-60%, while simultaneously replacing stale air and reducing mold growth. A carbon infrared dehumidification system releases far-infrared rays to increase wall temperature, accelerating moisture evaporation and creating a dual effect of "drying + insulation," especially suitable for cold and damp regions. Electro-osmotic moisture-proofing technology uses an embedded anode wire and intelligent host to generate a low-pressure pulsed magnetic field, forcing water molecules to flow back into the soil under reverse osmotic pressure, thus solving the problem of moisture absorption in the structure at its source.
Refined construction techniques are essential for effective waterproofing and moisture-proofing. The base layer treatment must ensure the concrete surface moisture content is below 8%. Cracks should be repaired using grouting, and corners should be rounded (radius ≥ 50mm) to avoid stress concentration and cracking. Regarding material overlaps, the overlap width of the roll material must be greater than 80mm, and the overflow of asphalt oil during hot-melt application is a passing standard. Waterproof coatings should be applied in 2-3 coats, each applied perpendicularly to ensure uniform film thickness. A water tightness test is crucial for acceptance. The basement must have a water depth greater than 20cm for 48 hours; the roof must be continuously sprayed with water for 2 hours, and no leakage is required for acceptance.
Material selection must consider both performance and adaptability. Waterproofing materials must possess anti-aging and corrosion-resistant properties. For example, TPO rolls are suitable for roofs, while polymer self-adhesive rolls are suitable for basements. Sealant should be weather-resistant silicone structural adhesive to ensure long-term elasticity. Moisture-proofing materials should prioritize breathability and mildew resistance. For instance, inorganic silicate penetrating crystallizing materials are suitable for walls, while XPS extruded polystyrene boards are suitable for floor insulation and moisture protection.
Attention to detail determines the success or failure of waterproofing and moisture-proofing. A U-shaped cement moisture-proof strip should be installed at the bathroom entrance to prevent moisture from traveling to the door frame; a concrete waterproof platform should be poured at the bottom of the pipe shaft to prevent the waterproof layer from tearing due to wall settlement; a water-stop structure should be installed at the bathroom entrance for underfloor heating to prevent water from seeping along the underfloor heating pipes to the exterior wooden floor. These detailed processes effectively eliminate waterproofing dead spots and improve overall moisture-proofing performance.
Waterproofing and moisture-proofing for mobile villas requires a systematic solution combining structural waterproofing, active moisture-proofing, meticulous construction, and optimized materials. From the roof to the basement, from material selection to process control, every step must be strictly controlled to ensure its long-term stability and comfort in different environments, truly achieving a "moving but not changing quality" living experience.
