What is Liquid Applied Waterproofing?
Liquid applied waterproofing, also known as sürme izolasyon, is a waterproofing system applied to surfaces using a brush, roller, or spray. It creates a seamless, joint-free membrane that protects structures against water and moisture.
It is widely used in modern construction projects due to its ease of application and high performance in detail areas where traditional membrane systems can be difficult to install.
What Does Liquid Waterproofing Do?
The main purpose of liquid waterproofing is to protect building elements from water damage.
Key benefits include:
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Provides water impermeability
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Protects reinforced concrete structures
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Prevents corrosion of reinforcement steel
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Reduces mold and damp formation
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Extends the lifespan of the structure
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Works against both positive and negative water pressure
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Creates a seamless waterproof layer
It is especially important in foundation waterproofing and terrace applications.
Where is Liquid Waterproofing Used?
Liquid waterproofing systems are used in a wide range of construction areas:
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Foundations and retaining walls
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Terraces and roofs
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Balconies and wet areas (bathrooms, kitchens)
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Basements and parking structures
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Water tanks and pools
It is particularly effective in complex details such as corners, joints, and pipe penetrations.
Types of Liquid Waterproofing
Cement-Based Liquid Waterproofing
One of the most common systems.
Advantages:
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Breathable structure
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Strong adhesion to concrete
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Suitable for indoor and outdoor use
Common applications:
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Bathrooms
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Balconies
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Pools
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Foundations
Widely used products include solutions from Mapei, Kalekim, and Sika.
Bitumen-Based Liquid Waterproofing
Highly elastic systems used mainly in underground applications.
Typical use cases:
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Foundations
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Retaining walls
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Substructure waterproofing
Products from Fosroc are commonly used in such applications.
Polyurethane Liquid Waterproofing
High-performance system with strong elasticity and UV resistance.
Common uses:
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Terraces
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Exposed roofs
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Outdoor waterproofing surfaces
Often used with systems from Weber.
How is Liquid Waterproofing Applied?
Professional application is essential for long-term performance.
Typical steps:
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Surface cleaning and preparation
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Repair of cracks and defects
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Primer application
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First coat of liquid membrane
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Reinforcement layer (if required)
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Second coat application
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Protective screed or finishing layer
Proper timing and surface preparation directly affect durability.
Advantages of Liquid Waterproofing
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Seamless (no joints) application
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Easy and fast installation
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High elasticity
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Excellent detail performance
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Strong adhesion to concrete
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Long service life
It is especially useful in areas with complex geometries.
Liquid Waterproofing vs Membrane Systems
Liquid waterproofing is often compared with sheet membranes.
Liquid systems:
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Seamless application
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Better for detailing
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Easier installation in complex areas
Membrane systems:
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Thicker protection layer
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Higher mechanical resistance
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Suitable for heavy-duty applications
In many projects, both systems are used together for maximum performance.
Popular Waterproofing Brands
Common brands in the industry include:
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Mapei
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Kalekim
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Sika
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Fosroc
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Weber
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Schomburg
Liquid Waterproofing Prices (2026)
Pricing depends on:
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Product type
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Consumption rate
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Elasticity level
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UV resistance
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Negative water pressure resistance
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Brand and application area
Correct product selection is essential for long-term performance.
Professional Waterproofing Solutions
Haydar Boz Yalıtım provides professional waterproofing solutions including liquid membranes, foundation waterproofing, and structural protection systems.
Their applications cover residential, commercial, and industrial projects using bitumen-based, cement-based, and polyurethane waterproofing systems.
Conclusion
Liquid applied waterproofing is a modern, flexible, and highly effective solution for protecting structures against water damage. When applied correctly with proper surface preparation and suitable materials, it provides long-lasting protection for buildings.
However, system selection and professional application are critical for achieving reliable performance in real-world conditions.