Sealants

Our sealants are designed for a wide variety of construction, refurbishment and DIY projects, providing reliable sealing and bonding performance on different materials. From general-purpose silicone sealants to specialist trade products, we serve both professional and home customers across the UK with a full range of trusted solutions.

What are sealants and how are they used in construction?

In construction, sealants are flexible compounds used to close gaps, fill voids and protect joints between different building elements. They help maintain a strong connection between components while allowing movement, and are commonly used around windows, doors, kitchens, bathrooms, façades and service penetrations.

Sealants are also important for sound reduction, smoke control and fire protection in certain applications, where specific types of products are required and carefully tested for safety and performance.

Silicone sealants for professional finishing

Silicone sealants are some of the most commonly used products for interior and exterior sealing. They are highly flexible and effective on a wide variety of substrates, including glass, ceramics, plastics and many construction materials.

• Interior sealing around sanitaryware, kitchens and worktops.

• Perimeter seals around windows and doors in the home and commercial buildings.

• Movement joints where a strong but flexible connection is needed.

Silicone-based products are designed to provide long-term reliability, often remaining elastic for many years when correctly applied and maintained.

Specialist trade products from County Construction Chemicals

We stock selected specialist trade products from County Construction Chemicals and other trusted brands, giving professional users access to high-spec sealants and adhesives designed for demanding conditions.

These items include products aimed at:

• High-performance façade and glazing applications.

• Fire- and smoke-resistant sealants for building safety.

• Specialist putties and gap fillers for repair and maintenance.

Our dedicated focus on quality and service means we work with manufacturers who have a strong history of proven, tested products for trade use.

Choosing the right sealant for your project

Picking the correct sealant depends on the materials involved, the movement expected in the joint and the environmental conditions. Some products are better suited to interior work, while others are specifically designed for external exposure or high temperatures.

• General-purpose sealants and adhesives for routine repair and maintenance.

• Specialist construction sealants for structural joints and façade details.

• Fire-rated products where building regulations require fire and smoke resistance.

Each product listing includes key information such as content, based technology (for example, silicone), and recommended uses. This helps both trade and DIY users choose the most suitable option for their projects and working conditions.

Explore our full range of high-quality sealants

On this page you can shop a full range of sealants and related tools, all held in stock for fast dispatch across the UK. We offer products from trusted brands that have been tested for reliability and long-term performance.

Simply browse the category, select the items that meet your needs, and add them to your basket. Each sealant is clearly marked with its primary applications, so you can match the type of product to your specific working conditions and projects.

If you require technical guidance, up-to-date review information or advice on which sealant is the most effective for your home or commercial build, our team is ready to help our customers in seconds with practical, experience-based support.