Sunkun Waterproofing Services

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Waterproofing for Sunken Bathroom & Kitchen Slabs Using Golden Building Chemicals

In bathrooms, kitchens, and utility zones, sunkuns (sunken slabs) are critical for drainage but also highly prone to water seepage and leakage. EMERGE INFRA offers expert Sunkun waterproofing services in Chennai using high-performance Golden Building Chemicals (GBC) waterproofing systems that protect the slab, prevent seepage, and ensure leak-free interiors for years.

Bathroom Sunkun Waterproofing Contractors in Chennai

What is a Sunkun and Why It Needs Waterproofing

A sunkun is a recessed RCC slab designed to house plumbing and drainage for wet areas like bathrooms, toilets, and kitchens. These depressions retain water longer, leading to high moisture exposure. Without proper waterproofing, water can:

  • Seep into the RCC structure
  • Cause ceiling leaks in lower floors
  • Lead to corrosion of reinforcement steel
  • Encourage fungus and mold growth
  • Result in expensive structural repairs

Waterproofing the sunkun ensures full sealing of the area, especially around pipes, corners, and drainage points.

Our Specialized Sunkun Waterproofing Method

EMERGE INFRA follows a proven, step-by-step system to ensure long-term water resistance in sunken slabs:

  • Surface Cleaning: Thorough cleaning of the RCC sunkun area to remove dust, grease, and old coatings
  • Crack & Joint Sealing: Injection grouting and sealing of visible cracks, pipe joints, and bends
  • Primer Application: Application of Golden Building Chemicals (GBC) bitumen or PU primer to improve bonding
  • Waterproofing Coating: Application of two coats of PU or cementitious waterproofing membranes
  • Optional Screed Layer: Protective screed or leveling layer applied before tile or granite installation

Best GBC Materials for Sunkun Waterproofing

We use high-performance Golden Building Chemicals (GBC) waterproofing products, specifically designed for sub-surface and high-moisture zones:

  • PU Liquid Membrane – Flexible coating for water pooling resistance
  • Elastomeric Crack Sealer – For joint and pipe gap sealing
  • Bitumen Primer – Improves adhesion and surface readiness
  • Cementitious Base Coat – Robust protection for RCC substrates

All materials are IS- and ASTM-certified for durability, flexibility, and long-term performance.

Bathroom Sunkun Waterproofing Contractors in Chennai

Advantages of Professional
Sunkun Waterproofing

  • Prevents water seepage into lower floors
  • Resists standing water and frequent moisture exposure
  • Seals critical areas like pipe bends, corners, and junctions
  • Ready for immediate tile, granite, or marble laying
  • Uses fast-curing systems to reduce project timelines

Our waterproofing ensures deep sealing, long-term durability, and peace of mind.

Ideal Areas for
Sunkun Waterproofing

EMERGE INFRA’s sunkun waterproofing services are ideal for:

  • Residential bathrooms and toilets
  • Kitchen sink sunkuns and wet zones
  • Commercial utility and dishwashing areas
  • Drainage trenches and concealed pipe areas
  • Public restrooms and high-traffic washrooms