At the joint, the different building elements, materials and trades meet. A joint occurs where two components meet and may occur within an element of construction or at part of an interface between two elements. Joint sealing facilitates construction, as a number of components made of different materials are used. Joints allow for needed movement of the materials but must remain water, air, heat, cold and vapor tight. Avoid making mistakes where your building is most vulnerable to leakage – the joint.

Why Joint Sealing is Important

The building blocks of your construction - like the concrete slab, the glass facade element, the roofing membrane, the metal cover - generally do not let water, moisture or air enter the building or structure. It is at the joints where a building is weakest to leakage. Only correctly specified and professionally applied high quality joint sealants will manage to keep your building or structure sustainably tight during its entire lifespan.  

 

Find out how Sika sealing and bonding solutions can contribute to sustainable construction.

 

Sika Technologies

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Joint Sealing Applications

Advantages of Joint Sealing

Durability
Sika's joint sealing solutions are engineered to withstand dynamic movements and environmental conditions, ensuring long-term performance and structural integrity.
Ease of Application
Sika's sealants are formulated for straightforward application, facilitating efficient installation processes for trade professionals.
Versatility
Our sealants are suitable for a wide range of substrates, including concrete, masonry, painted wood, coated or galvanized aluminium, steel, and PVC, providing flexible solutions for various construction projects.
Regulatory Compliance
Sika's products meet stringent industry standards, ensuring that your projects adhere to necessary performance requirements.
Weather Resistance
Designed to provide effective weather sealing, Sika's products protect against water ingress and air leakage, contributing to the building's energy efficiency and structural integrity.

Joint Sealing Videos

Joint Sealing Knowledge Articles
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FAQs

Are Sika sanitary sealants available in different colours?

Absolutely! Sikasil HM is available in six on-trend colours to suit any design. Colours include: White, Limestone White, Translucent, Manhattan Grey, Anthracite, and Jasmine.

Posted on: 14/03/2025
How do I prevent mould growth in a kitchen or bathroom project?

Starting with the right sealant is key to preventing mould growth. Sikasil HM is a premium silicone sealant which contains a powerful anti-fungal compound to prevent mould growth in high humidity areas.

Posted on: 14/03/2025
How do I apply Sikaflex 423 PowerCure?

The Sika PowerCure Dispenser is used to apply Sikaflex 423 PowerCure, instantly mixing sealant and booster to allow efficient application to the area.

Posted on: 14/03/2025
Does Sika have a product for use with tanks and silos?

Sikaflex 403 Tank and Silo is a polyurethane sealant which is resistant to organic acids which can be found in liquid manure and silage liquids.

Posted on: 14/03/2025
I need a product that cures quickly. What should I use?

When speed is of the essence, Sikaflex 423 Powercure is the answer. An accelerated, elastic polyurethane sealant, it seals joints in areas such as warehouses, car parks, pedestrian and traffic areas, and sea walls.

Posted on: 14/03/2025
Can Sikaflex EBT+ really be used as an adhesive, sealant, and filler?

Yes, Sikaflex EBT+ can really be used as an adhesive, sealant, and filler. The 1-part, polyurethane product is truly multi-purpose and offers permanent elasticity, high grab, and gap filling properties making it a great construction solution. Can Sikaflex EBT+ really be used as an adhesive, sealant, and filler?

Posted on: 14/03/2025
What colour is SikaSil 825 available in?

Sikasil 825 is available in a range of colours, all designed to mee the aesthetic requirements of your project.

Colours include: White, Black, Mid Grey, Dark Grey, Brick Red, Brown, Buff, Beige, Anthracite, Dark Anthracite RAL 7016, Magnolia, Portland Stone & Limestone White.

Posted on: 14/03/2025
Why is joing sealing important?

Joint sealing is crucial where building elements and materials meet, as any gaps make the structure susceptible to leakage. Proper sealing ensures that these joints remain watertight, airtight, and resistant to various environmental factors, thereby maintaining the building's integrity and energy efficiency.

Posted on: 14/03/2025
Which Sika sealant is best suited for expansion joints in concrete structures?

Sika offers a number of products for expansion joints in concrete, designed to accommodate movements and adhere well to concrete surfaces, providing long-lasting seals. SikaHyflex 250 Façade has a very high movement capability of +100 % / -50 % making it the ideal solution to expansion joint sealing. 

What are the advantanges of using Sika's joint sealants?

Sika's joint sealants have been developed for a wide variety of applications within the construction industry, offering exceptional durability, ease of application, versatility across various substrates. Get in touch with our team to discuss requirements for your next project.

Which Sika sealant is best suited for expansion joints in concrete structures?

Sika offers a number of products for expansion joints in concrete, designed to accommodate movements and adhere well to concrete surfaces, providing long-lasting seals. SikaHyflex 250 Façade has a very high movement capability of +100 % / -50 % making it the ideal solution to expansion joint sealing. 

How do I select the appropriate Sika joint sealant for my specific project?

Selecting the right sealant depends on factors such as joint movement, exposure conditions, and substrate materials. Sika provides detailed product datasheets and a joint sealing calculator to assist in making informed decisions tailored to your project's requirements. 

Get in touch with our team to discuss specific requirements for your next project.

How can I ensure proper application of joint sealants?

To ensure effective joint sealing:
Surface Preparation: Clean the joint surfaces thoroughly, removing any dirt, debris, or contaminants.
Priming: Apply appropriate primers to enhance adhesion, especially on porous substrates.
Application Conditions: Ensure the substrates are appropriately conditioned (e.g., dry or damp as required) before applying the sealant.
Tooling: Properly tool the sealant after application to ensure good contact with joint surfaces and achieve the desired finish.

Are Tecnic products now part of the Sika range?

Yes, Tecnic has now joined the Sika family. While the name and design has changed, the product itself is still the same, providing exceptional quality and reliability on the most demanding construction projects. 

Are Tecnic products now part of the Sika range?

Yes, Tecnic has now joined the Sika family. While the name and design has changed, the product itself is still the same, providing exceptional quality and reliability on the most demanding construction projects. 

How can I ensure proper application of joint sealants?

To ensure effective joint sealing:
Surface Preparation: Clean the joint surfaces thoroughly, removing any dirt, debris, or contaminants.
Priming: Apply appropriate primers to enhance adhesion, especially on porous substrates.
Application Conditions: Ensure the substrates are appropriately conditioned (e.g., dry or damp as required) before applying the sealant.
Tooling: Properly tool the sealant after application to ensure good contact with joint surfaces and achieve the desired finish.

What are the advantanges of using Sika's joint sealants?

Sika's joint sealants have been developed for a wide variety of applications within the construction industry, offering exceptional durability, ease of application, versatility across various substrates. Get in touch with our team to discuss requirements for your next project.

How do I select the appropriate Sika joint sealant for my specific project?

Selecting the right sealant depends on factors such as joint movement, exposure conditions, and substrate materials. Sika provides detailed product datasheets and a joint sealing calculator to assist in making informed decisions tailored to your project's requirements. 

Get in touch with our team to discuss specific requirements for your next project.