Old Building Waterproofing – Permanent Treatment for Leakage, Dampness & Cracks
Old buildings naturally develop leakage, dampness, wall seepage, and structural cracks due to age, weather damage, and worn-out materials. If waterproofing is not done on time, these issues spread quickly and weaken the building's foundation, walls, and slabs.
Old building waterproofing is essential to restore structural strength, stop moisture penetration, and protect the property from long-term damage.
Waterseal provides specialized old building waterproofing solutions designed for aged structures. Our treatments deeply penetrate concrete, seal cracks, stop seepage, and protect your home from heavy monsoon leakage.
Why Old Buildings Need Waterproofing?
Old structures face several common problems due to years of exposure:
Roof and terrace cracks causing leakage
Dampness, black patches, and peeling paint
Weak plaster and hollow-sounding walls
Bathroom and kitchen seepage
Basement moisture and rising damp
Fungal growth and unhealthy indoor humidity
If untreated, these issues lead to:
✔ Structural weakness
✔ Faster deterioration
✔ High repair costs
✔ Health problems caused by mold
Waterseal’s chemical waterproofing method directly targets the root cause and prevents further damage.
Looking for all types of waterproofing?
Explore our complete Waterproofing Services Guide for every type of waterproofing solution.
View Waterproofing Services →Major Areas That Need Waterproofing in Old Buildings
1. Old Terrace & Roof Waterproofing
Terraces are the biggest source of leakage in old buildings.
Waterseal provides customized solutions depending on the surface condition:
• Mosaic / China Mosaic Terrace Waterproofing
Old mosaic terraces develop cracks and allow water to pass through joints. Waterseal’s PSv-Premix chemical penetrates the slab, fills cracks, and forms a long-lasting waterproof layer.
• Tile-Finished Terrace Waterproofing
Hidden seepage under tiles is treated using PSv-Premix, which blocks micro-cracks and strengthens surface bonding.
• Flat Roof Waterproofing
Old flat roofs often lose slope and cause water puddling. We repair slope, seal cracks, and apply waterproof coatings for monsoon protection.
• New PCC with Waterproofing in Old Buildings
If the terrace requires new PCC, PSv-Premix is mixed directly into the concrete for deeper waterproofing strength.
2. Bathroom & Kitchen Leakage Repair
Bathrooms in old homes commonly leak through floor joints, pipelines, and tiles.
• Bottom Slab Waterproofing
Waterseal applies PSv-Premix on the base slab before tiling to create a strong waterproof barrier.
• Renovation Waterproofing
During bathroom renovation, chemical waterproofing is applied under tiles, around drain areas, and pipe joints to completely stop seepage.
Benefits:
Stops leakage into lower floors
Eliminates damp patches
Prevents tile hollow sound
Long-lasting and maintenance-free
3. Interior & Exterior Wall Waterproofing
Old building walls absorb moisture due to cracks and porous plaster.
• Interior Wall Dampness Treatment
Injectable PSv-Premix is used to stop internal wall dampness and eliminate mold, stains, and foul odors.
• Exterior Wall Waterproofing
Exterior walls are coated with elastomeric waterproofing to block rainwater penetration and protect surface plaster.
Wall waterproofing prevents:
Peeling paint
Damp smell
Mold growth
Structural cracks
4. Water Tank Waterproofing
Old water tanks (overhead or underground) lose strength over time due to cracks and water pressure.
Types of Tank Waterproofing:
Overhead tank waterproofing using food-safe PSv-Premix
Underground tank waterproofing with high-pressure resistance
Tiled tank joint sealing
Active water tank waterproofing for continuous flooding
Waterseal’s waterproofing ensures zero leakage & 100% safe water storage.
5. Secondary Critical Areas in Old Buildings
Even less-noticed areas cause major leakage issues:
• Exterior Walls & Parapets
Exposed walls crack due to heat and rain. Elastomeric coatings block moisture.
• Windows & Door Frames
Poor sealing causes rainwater entry. Proper caulking and waterproof membranes are applied.
• Balconies & Sunshades
Constant exposure makes them crack and leak. Waterproof treatments prevent efflorescence and surface damage.
Regular inspection of these areas helps avoid expensive repairs later.
Why Choose Waterseal for Old Building Waterproofing?
Waterseal has 29+ years of specialized experience protecting thousands of old buildings across India.
We offer:
✔ Customized treatment for old structures
✔ PSv-Premix deep waterproofing system
✔ Long-lasting results even during heavy monsoon
✔ Expert inspection & material recommendation
✔ Safe, eco-friendly waterproofing solutions
✔ Experienced technical team
✔ Cost-effective & no-breakage methods
Whether your building is 10, 20, or even 50 years old, Waterseal provides the right solution to restore strength and stop leakage permanently.
Benefits of Old Building Waterproofing
Old buildings require timely waterproofing to prevent long-term structural and surface damage. A proper waterproofing system provides the following benefits:
Stops leakage and seepage permanently by sealing cracks and weak points
Protects terraces, walls, bathrooms, and balconies from water penetration
Restores structural strength and improves the overall appearance of the building
Reduces frequent repair and maintenance costs
Increases property life and resale value by keeping the structure safe and dry
Suitable For:
Old residential homes and bungalows
Multi-floor apartments & housing societies
Commercial buildings & industrial sheds
Government, heritage, and institutional structures
How We Waterproof Old Buildings – Application Method
Waterseal follows a systematic waterproofing method designed specially for old structures:
Surface Cleaning: Remove loose paint, dust, algae, and weak plaster
Crack Filling: Seal visible cracks using specialized sealants
Chemical Application: Apply 2–3 coats of Waterseal PSv-Premix for deep penetration
Drying & Curing: Allow proper drying to create a strong waterproof layer
Optional Topcoat: Add a protective elastomeric topcoat for extra durability and clean finish
This process ensures long-term waterproofing without breakage or heavy renovation.
Our Waterproofing Solution for Old Buildings
Waterseal’s expert treatment includes a full range of waterproofing applications tailored for old structures:
✔ Crack filling and sealing to stop seepage at the source
✔ Terrace waterproof coating using Waterseal PSv-Premix or PU-based systems
✔ Internal and external wall waterproofing for dampness control
✔ Bathroom and toilet waterproofing using deep-penetration chemicals
✔ Application by brush, roller, or spray depending on surface condition
✔ Flexible, durable waterproof coating with protection for 5+ years
Our method strengthens old buildings, stops leakage permanently, and provides long-lasting protection during heavy monsoons.
✅ Old Building Waterproofing – FAQs
Why do old buildings face frequent leakage and dampness?
Old buildings naturally develop cracks, weak plaster, loose joints, and porous walls due to age and weather changes. These gaps allow rainwater and moisture to enter, causing dampness, seepage, and structural weakness. Proper waterproofing helps block water entry and protect the building from further damage.
How long does old building waterproofing last?
Waterseal’s old building waterproofing typically lasts 5+ years, depending on the condition of the structure, terrace slope, and surface maintenance. With regular inspection and timely touch-up coats, the protection can last even longer.
Can waterproofing be done without removing tiles or breaking the surface?
Yes. Many old building areas—such as bathrooms, terraces, and walls—can be waterproofed without breakage using Waterseal’s PSv-Premix chemical. It penetrates deep into the existing surface and seals cracks from within.
How much does old building waterproofing cost?
The cost depends on the area size, type of leakage, material condition, and waterproofing method required. Typically, old building waterproofing is more affordable than full renovation because it stops leakage at the root without major breakage. A site inspection helps determine the exact cost.
Is waterproofing necessary if the building is very old (20–50 years)?
Absolutely. The older the building, the higher the chances of internal damage due to seepage and moisture. Waterproofing protects the structure, stops further degradation, and increases its lifespan. It is one of the most essential treatments for old homes, apartments, and commercial buildings.
“Easy, Safe, and Long-Lasting Waterproofing — Get Your Free Consultation Today!
Protect your home or office with Waterseal’s premium waterproofing solutions. Whether it’s a new construction or an old building, our expert team ensures long-lasting results with minimal hassle.
