Bathroom Waterproofing

Bathroom waterproofing is a critical service that protects not just the bathroom itself but also the rooms and walls adjacent to and below it from water damage. At Islamia Paints & Decor, we have extensive experience in waterproofing all types of bathrooms — from compact en-suite bathrooms in Kolkata's high-rise apartments to large luxury bathrooms in independent houses. Water leakage from bathrooms is one of the most common problems reported by homeowners and housing societies, and it can cause extensive damage including peeling paint, dampness on adjacent walls, electrical short circuits, deterioration of structural concrete, and health hazards from mould and fungal growth. Our bathroom waterproofing service covers the complete scope: floor waterproofing using cementitious waterproofing slurry (Dr. Fixit Pidiproof LW+, SikaTop Seal 107) applied in two coats to create a seamless, impermeable barrier; wall waterproofing for shower areas and wet walls up to a minimum height of 1.8 metres or full wall height; treatment of floor-drain junctions, pipe penetrations, and sanitary fixture connections with specialised sealants and pre-formed waterproofing tapes; and waterproofing of the junction between the bathroom floor and the adjacent room's wall to prevent lateral water migration. For bathrooms being renovated or newly constructed, we recommend waterproofing before tile installation so that the waterproofing layer is protected by the tiles and grout above it. For existing bathrooms that are showing signs of leakage without tile removal, we offer grout-sealing treatments and surface-applied crystalline waterproofing that penetrates into the tile joints and creates a water-repellent barrier. Our team uses only manufacturer-certified products from Dr. Fixit, Berger, and Sika, and every bathroom waterproofing project undergoes a water-ponding test before handover to verify complete water-tightness. We provide a 5-10 year warranty on materials and workmanship, and our services are available across all Kolkata areas including Topsia, Park Circus, Salt Lake, New Town, Gariahat, Ballygunge, and beyond.