What is roof waterproofing

Roof waterproofing is the process of applying waterproof materials and/or coatings to protect the roof from rainwater, sun, and extreme climate exposure. This prevents the roof surface from developing cracks, seepage, and leakage, and preserves the internal structure of the building by keeping it dry and protected from moisture.

costs, and provides thermal comfort. Proper roof design, use of slope for drainage, and application of flexible waterproofing membranes are critical to keeping the roof secure and long-lasting.

Know Your Roof

COMMON PROBLEMS DUE TO ROOF LEAKAGE /SEEPAGE:

  • Infiltration damages electrical fixtures, leading to short circuits and electrical hazards
  • Cracks in the concrete leading to water pooling and seepage
  • Moss, algae, and fungal growth due to constant dampness
  • Damage to the ceiling paint and interior aesthetics
  • Weakened roof slab structure due to prolonged water contact
  • Efflorescence and salt deposits forming on the ceilings
  • Increased cooling load due to heat absorption from damp surfacesPaints

Why is paint not a substitute for roof waterproofing?


Paints, by themselves, do not establish a moisture or vapor barrier between the surface and the environment. This leaves the roof unguarded from harsh climate conditions and water ingress. Further, paints are prone to cracking and fading under UV rays and water exposure.

Unlike paints, roof waterproofing systems are elastomeric and flexible, capable of bridging hairline cracks, and resisting standing water. High-performance roof waterproofing materials like PU coatings, acrylic elastomeric membranes, and cementitious systems are built to withstand weather extremes and provide lasting protection. Thus, relying on regular paint alone is not a viable long-term solution for roof protection.

ROOF WATERPROOFING KNOWLEDGE

1. What is Roof Waterproofing?

A: It is the application of waterproof materials or coatings on roof surfaces to protect them from rainwater and moisture. It helps prevent leaks and increases the durability of the building.

2. Why is Painting Not a Substitute for Roof Waterproofing?

A: Paint only improves appearance and cannot handle water ingress or thermal movement. Proper systems include flexible membranes or coatings for long-term protection.

3. What Are the Common Problems Caused by Roof Leakage?

  • Short circuits and electrical hazards
  • Damp ceiling patches
  • Cracks and weakened concrete
  • Mold, fungus, poor air quality
  • Ceiling damage and bubbling paint

4. What Causes Leakage on Roof Slabs?

  • Poor slope or water drainage
  • Cracks in concrete or screed
  • Aging waterproofing layer
  • Clogged outlets or improper detailing
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