Water Seepage Filler for Prefabricated House Panels

For water seepage in prefabricated house panels, a waterproofing system combining hot-melt membrane and acrylic ester auxiliary materials can be selected, or an appropriate filler can be chosen for repair based on the leakage situation.

I. Combined Solution of Hot-Melt Membrane and Acrylic Ester Auxiliary Materials

1. Hot-Melt Membrane Construction: As the main waterproof layer, the membrane is melted at the bottom surface through hot-melt method to form a nearly full-bonding effect with the base layer, reducing voids and water channels. Its ductility and tensile strength can cover panel joints and cracks, forming a continuous waterproof barrier, especially capable of resisting panel joint displacements caused by temperature changes or building settlement.
2. Application of Acrylic Ester Auxiliary Materials: This material is used for joint treatment, sealing enhancement at membrane overlaps, or as a base treatment agent. Its good bonding strength and elasticity can compensate for the insufficient sealing of the membrane at complex areas such as internal and external corners and pipe roots, enhancing the adhesion between the membrane and the base layer.
3. Systematic Treatment Logic: It is necessary to accurately locate the leakage position and path through professional methods first, and then carry out targeted local or overall waterproof treatment to avoid blind large-area construction. The repair effect depends on the treatment method of structural joints, the bonding strength between the waterproof layer and the base layer, and the adaptability of the material to the dynamic deformation of panel joints.

II. Selection and Operation of Filler Materials

1. Material Selection:
   • Quick-Drying Waterproof Glue (such as Leak Stopper): Suitable for sudden water leakage, it can quickly cure on a damp surface to form a waterproof film.
   • Crack Sealing Compound: For structural cracks ranging from 0.5 to 5 millimeters, it forms a rigid waterproof structure through expansion filling.
   • Joint Sealing Glue: Suitable for deep and narrow cracks ranging from 0.2 to 3 millimeters or hidden gaps, it forms an elastic glue layer through penetration and curing.
2. Operation Steps:
   • Clean the leakage opening and ensure it is dry. Use anti-slip ladders or handrails for safety during high-altitude operations.
   • Stir evenly and pour into the leakage opening to fill it up. Use a plastic scraper to smooth it out and ensure there are no gaps.
   • Wait for 4-6 hours for drying and then test the repair effect with water.
3. Precautions:
   • The filler may affect the surrounding color, so it is recommended to test on a small area first.
   • Clean the tools promptly after use.
   • Prioritize products with strong weather resistance (e.g., stable from -30℃ to 80℃) and bonding strength that meets standards (e.g., bonding strength to tiles ≥ 0.5MPa).