Bostik products for waterproofing applied by spraying

BOSTIK BLOCK X911 TERRA TURBO LIGHT 2K – A NEW LEVEL OF HYBRID WATERPROOFING THANKS TO HYGIENIC CERTIFICATE

luty 10, 2025

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Published by Anna Kaczmarczyk-Fiuk on marzec 5, 2025

Bostik Waterproofing Products – Application Methods

Bostik waterproofing products can be applied using both spray application and traditional methods such as a trowel or brush. The choice of method depends on the specifics of the project; however, spray application significantly reduces working time and ensures even coverage, even on hard-to-reach surfaces.

This approach enables effective sealing of foundations, basements, terraces, swimming pools, and other structural elements that require reliable water protection.

How to perform a spray application?

To ensure effective waterproofing, the following application steps must be followed:

Product preparation and application:

Preparation Bostik BLOCK X911 Terra Turbo Light 2K

Application of Bostik BLOCK X911 Terra Turbo Light 2K by spraying

1. Substrate Preparation

The substrate must be load-bearing, clean, and dry (or slightly damp), free of grease, dust, and other contaminants. Any irregularities and voids should be repaired beforehand using appropriate mortars.
If the surface is absorbent, it should be primed with a product such as BLOCK B786 TERRA SLIM (diluted 1:1) or GRIP A500 MULTI.

2. Mixing the Compound

Each product must be mixed according to the manufacturer’s instructions. Gradually add the powder component into the liquid component and mix thoroughly with a low-speed mixer until a homogeneous consistency is achieved.

3. Spray Application

Apply the waterproofing compound evenly with a spray unit, maintaining the recommended layer thickness specified by the manufacturer. If needed, apply in multiple coats.

Optional Reinforcement with Mesh
In areas subject to high stress or on uneven surfaces, it is recommended to embed fiberglass mesh in the first layer of waterproofing.

Detail Sealing
Corners, pipe penetrations, and expansion joints should be sealed using waterproofing tapes, such as BOSTIK SANITARY BAND EXTRA.

4. Application of the Second Layer

If two layers are required, apply the second layer only after the first has completely dried (typically after 4–6 hours or as specified in the product instructions).

5. Protection and Cleaning

Protect the coating from rain and direct sunlight until it is completely dry.
Clean tools with water immediately after use.

Waterproofing Training – Theory and Practice

As part of our services, we also offer theoretical and practical training in waterproofing technologies. Our courses provide participants with not only theoretical knowledge of modern sealing solutions, but also hands-on experience in the application of waterproofing materials, including spray application techniques.

For more information and the training schedule, visit: Sanier – Courses and Training.

As waterproofing specialists, we offer technical consulting at every stage of the project. Our clients can rely on professional support in selecting the most suitable materials and the best application methods tailored to the specific conditions of the construction site.

What Are the Advantages of Spray Application? – Izoservice Pumps

To fully leverage the potential of Bostik waterproofing products, it is worth considering the use of specialist injection pumps from Izoservice. These tools enable precise application of waterproofing compounds, minimizing errors caused by uneven material distribution. Izoservice pumps allow for controlled application on both large surfaces and hard-to-reach areas, improving work efficiency and reducing material waste.

Advantages of Using Spray Application Pumps:

Precise dosing – ensures even layer thickness of the waterproofing coating
Time and material savings – fast application over large areas
Application in hard-to-reach areas – effective even on complex structures
Minimized material loss – reduced waste during application
Compatibility with Bostik products – suitable for use with a wide range of waterproofing compounds

Using Izoservice pumps allows for professional-grade application, increasing the quality, speed, and cost-effectiveness of waterproofing work.

Bostik waterproofing products

BLOCK B525 TERRA 2K – Two-Component Bitumen Coating with Fibres

BLOCK B525 TERRA 2K is a solvent-free, two-component waterproofing compound based on a bitumen emulsion reinforced with fibres. After curing, it forms a durable and flexible waterproof coating that is resistant to groundwater and rainfall. The addition of fibres improves mechanical resistance and enhances the product’s ability to bridge cracks. It can be applied using a trowel, brush, or spray, allowing for optimal adaptation to specific construction conditions.

Features:

Solvent-free bitumen emulsion
Fibre-reinforced for increased durability
Flexible – bridges cracks over 2 mm wide
Waterproof – resistant to groundwater and atmospheric moisture
Pressure-resistant – suitable for demanding applications

Applications:

Waterproofing foundations, basements, foundation slabs, retaining walls, underground garages, and other ground-contact elements (such as balconies and terraces)
Suitable for positive and negative-side waterproofing
In insulation systems, it can be used in combination with EPS or XPS boards, for applications up to 3 meters deep
Resists pressurized water up to 7.5 meters water column

BLOCK B525 TERRA 2K is an ideal solution for demanding ground-level and underground waterproofing projects where flexibility, durability, and versatility of application are essential.

Hydroizolacja BOSTIK BLOCK B525 TERRA 2K Dickbeschichtung 2K A+B

Hydroizolacja bitumiczna BOSTIK BLOCK B525 TERRA 2K (Dickbeschichtung 2K)

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Product available to order. Contact us for more information.

BLOCK B755 TERRA 2K LIGHT – Lightweight Bitumen Coating with Polystyrene

BLOCK B755 TERRA 2K LIGHT is a modern two-component waterproofing compound based on bitumen emulsion with added polystyrene. Its uniquely lightweight formula makes it extremely easy to apply while maintaining excellent waterproofing performance. The product is highly flexible, enabling effective crack-bridging, and its fast curing makes it ideal for time-sensitive projects. It can be applied using a trowel, brush, or spray equipment.

Features:

Two-component bitumen compound modified with synthetic materials
High flexibility
Solvent-free
Fast curing
Easy application
High stability on vertical and horizontal surfaces

Applications:

Waterproofing basements, underground garages, foundations
Sealing pipe penetrations and expansion joints
Protection of retaining walls and floor slabs
Securing vertical and horizontal surfaces in underground construction

BLOCK B755 TERRA 2K LIGHT combines user-friendliness with high-performance sealing, making it an ideal choice for professionals seeking a lightweight, efficient, and durable bituminous solution.

BLOCK C750 FLEX – Flexible Cement-Based Waterproofing Mortar

BLOCK C750 FLEX is a single-component cementitious waterproofing mortar, enriched with polymers and fibres, which provide exceptional flexibility and resistance to pressurized water. It is an ideal solution for thin-layer waterproofing, particularly where crack-bridging and high weather resistance are required. Thanks to its versatility, it can be applied both indoors and outdoors, using a brush, trowel, or spray.

Key Features:

Flexible cement-based coating with high water resistance
Waterproof under hydrostatic pressure
Fibre-reinforced for added durability
Fully resistant to UV radiation
Suitable for vertical and horizontal surfaces
Excellent crack-bridging capability
Strong adhesion to concrete and other mineral substrates

Applications:

Waterproofing cracked concrete structures, bathtubs, swimming pools, and water tanks
Repair and flexible waterproofing under ceramic coverings on balconies and terraces of medium surface area
Thin-layer waterproofing of above- and below-grade cementitious and brick substrates, both exterior and interior
Moisture and groundwater protection for foundations and walls
Sealing cracked concrete structures
Suitable for high-humidity rooms

BLOCK C750 FLEX delivers a durable, flexible waterproof barrier, making it a reliable choice for demanding sealing tasks across various construction and renovation applications.

BOSTIK BLOCK C750 FLEX - ELASTYCZNA ZAPRAWA HYDROIZOLACYJNA

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BOSTIK BLOCK X701 TERRA 2k FLEX (K11 Flex Schlamme Grau)

BOSTIK BLOCK X701 TERRA 2k FLEX (dawne K11 Flex Schlamme Grau)

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BLOCK X701 TERRA 2K FLEX – Waterproofing Mortar for Pressurized Water Exposure

BLOCK X701 TERRA 2K FLEX is an advanced two-component waterproofing mortar designed for surfaces exposed to pressurized water. It offers excellent adhesion to mineral substrates, fast curing, and is resistant to frost and seawater. Its high flexibility allows it to bridge minor cracks, and it is suitable for application on both the positive and negative sides of structures. The product can be applied using a trowel, brush, or spray.

Features:

Two-component polymer-modified cementitious mortar with high resistance to pressurized water
Suitable for positive- and negative-side waterproofing
Resistant to frost and seawater
Excellent adhesion to mineral substrates
Capable of bridging small cracks

Applications:

Waterproofing of foundations, basements, and underground walls
Renovation of concrete surfaces and use as a bonding mortar
Sealing of walls and masonry exposed to water
Suitable for use on both exterior and interior surfaces

BLOCK X701 TERRA 2K FLEX is a durable and flexible waterproofing solution, ideal for demanding applications where protection against water under pressure is essential.

BLOCK X911 TERRA TURBO LIGHT 2K – Fast-Curing, Flexible Waterproofing Compound

BLOCK X911 TERRA TURBO LIGHT 2K is a two-component reactive waterproofing compound with universal applications for interior and exterior use, suitable for walls, floors, and underground structural elements. The product is bitumen- and solvent-free, making it safer and more environmentally friendly. Its advanced formula allows for rapid rain resistance in just 2 hours and full load-bearing capacity after 16 hours. It can be applied using a brush, trowel, or spray.

Key Features:

Two-component, flexible waterproofing compound
Rainproof after only 2 hours
Fully loadable after 16 hours
Free from bitumen and solvents
Excellent adhesion to a wide range of substrates, including concrete and old bituminous coatings

Applications:

Waterproofing foundations, balconies, and terraces
Protection of tanks, swimming pools, and bathrooms
Shielding buildings against groundwater and pressurized water
Renovation of existing waterproofing coatings

BLOCK X911 TERRA TURBO LIGHT 2K is a high-performance, fast-curing waterproofing solution, offering durability, flexibility, and a broad range of uses in both new construction and renovation projects.

BOSTIK BLOCK X911 Hydroizolacja hybrydowa

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FAQ – Frequently Asked Questions about Waterproofing Products

1. What thickness should the waterproofing layer be?

Each product has a specified minimum and maximum application thickness. Always check the product’s technical data sheet before use. In general, the wet layer should be between 1 and 5 mm, depending on the type of waterproofing. Applying at least two coats is recommended to ensure complete protection.

2. How long does waterproofing take to dry?

Drying time depends on ambient temperature and humidity. Fast-curing products like BLOCK X911 may be rain-resistant after just 2 hours, while full curing of some materials can take up to 16 hours. Always refer to the product’s technical data sheet.

3. How should the substrate be prepared before applying waterproofing?

The substrate must be load-bearing, clean, and dry or slightly damp. Porous surfaces require priming with a suitable product such as BLOCK B786 TERRA SLIM (diluted) or GRIP A500 MULTI. Any uneven areas or voids should be repaired using cement-based mortar.

4. What are the recommendations for application in low temperatures?

The minimum application temperature for most Bostik products is +5°C. Avoid application during frost or when freezing temperatures are expected.

5. How can a damaged waterproofing layer be repaired?

If the waterproofing layer is damaged, clean the affected area thoroughly and apply an additional layer of the product. In some cases, re-priming may be necessary before reapplication.

6. How much material is needed per 1 m² of surface?

Consumption depends on the type of product and the required layer thickness. Refer to the technical data sheet or use our coverage calculator for accurate estimates.

7. What personal protective equipment (PPE) should be used during application?

Always wear protective gloves, goggles, and a dust mask, especially when handling or mixing cement-based products. Ensure adequate ventilation when working indoors.