Building & Roofing Sealants

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Building and roofing sealants are a crucial part of any construction project, providing a long-lasting and effective solution to protect the structure against moisture, air infiltration, and other elements. At Materials Market, we offer a vast range of high-quality building and roof sealants that are specifically designed for roofing and building applications. Our sealants are easy to apply, provide a strong and durable seal, and come in a variety of colours to match the existing structure. With our selection of top-quality sealants from trusted brands, you can ensure that your project is protected against the elements and built to last.

Find Out More About Our Types of Building & Roofing Sealants
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Types of Roofing & Building Sealants

Moisture is one of the biggest threats to any building or roofing structure. It can cause rot, mould, and structural damage, which can be costly to repair. 

Sealing gaps and joints with a high-quality sealant can offer many benefits such as preventing moisture from seeping into these areas, protecting the structure and extending its lifespan.

In addition to moisture, air infiltration is another common problem that can lead to higher energy costs and reduced indoor air quality. 

Sealants can help to create an airtight seal, preventing drafts and air leaks, which can result in significant energy savings and improved indoor air quality.

There are several types of building and roofing sealants, each specifically formulated for specific applications and substrates. Some common types of sealants are:

  • Silicone sealants: Silicone sealant is an incredibly versatile liquid adhesive, with a gel-like consistency and unique chemical composition. Unlike other adhesives, it is extremely weather resistant, deeming it suitable for sealing joints and gaps in windows, doors, and other exterior components.
  • Polyurethane sealants: Unparalleled in flexibility, polyurethane sealers are the ideal solution for sealing exterior surfaces. Whether it's wood, metal, plastic, masonry or aluminium that you need to safeguard against the elements - these non-toxic and flexible construction sealants will keep water out and ensure long-lasting resilience.
  • Acrylic sealants: Acrylic sealant is a powerful sealing material, comprised of water-based acrylic resins. It brings charm to interior and exterior surfaces– with the added advantage of being paintable. Furthermore, it quickly cures after drying and provides protection from dust particles or invading pests on most common surfaces. 
  • Butyl rubber sealants: Butyl sealant takes the cake for reliable joint sealing solutions. Impermeable to water and air, this solution provides a waterproof seal; a real game-changer when sealing and protecting roofs, drains, guttering and other exterior applications. Boasting outstanding water resistance, butyl rubber sealant hardens quickly while maintaining its elasticity. This resilience provides exceptional vibrational dampening and allows it to withstand fluctuating temperatures without compromising its strength or integrity.

Building and Roofing Sealants Applications

Building and roofing sealants are used for a variety of applications, including:

  • Roofing: Roof sealant is used to seal gaps and joints in roofing structures, preventing water from infiltrating the roof and causing damage.
  • Windows and doors: Sealants offer a reliable solution for sealing construction expansion joints and perimeter pointing windows and doors, preventing air and water from infiltrating the building.
  • Concrete joints: Concrete sealants can either block pores in the surface to prevent absorption of water and other corrosive substances, or create an impenetrable barrier that impedes unwanted materials from entering. 
  • HVAC systems: Sealants are used to seal joints in HVAC ducts and systems, preventing air leaks and improving energy efficiency.

Important Considerations When Selecting Building and Roofing Sealants

When selecting and using building and roofing sealants, it is important to consider several factors, such as:

  • Substrate compatibility: Different sealants are designed for specific substrates, such as concrete, metal, wood, and plastic. It is important to select a sealant that is compatible with the substrate you are working with.
  • Application method: Some sealants are designed for specific application methods, such as caulking guns, sprayers, or trowels. It is important to select a sealant that can be applied using the method you prefer.
  • Environmental factors: Some sealants are designed for specific environmental conditions, such as high temperatures, humidity, or UV exposure. It is important to select a sealant that can withstand the environmental conditions in which it will be used. For roofing, it's important to select a sealant with excellent external weathering properties. 
  • Cure time: Some sealants require longer cure times than others. It is important to select a sealant that allows enough time for the sealant to cure before it is exposed to water, air, or other elements.
  • Maintenance requirements: Some sealants require regular maintenance or reapplication. It is important to select a sealant that requires minimal maintenance and has a long lifespan.

Frequently Asked Building & Roofing Sealants Questions

What Is The Lifespan Of Roofing Sealants? 

The lifespan of roofing sealants depends on various factors such as the type of sealant used, environmental conditions, and application method. Generally, high-quality roofing sealants can last between 10-20 years, but some specialised sealants can last even longer.

Can I Apply A New Layer Of Sealant Over An Old One? 

In most cases, it is not recommended to apply a new layer of sealant over an old one as it can affect the adhesion of the new sealant. It is best to remove the old sealant before applying a new one to ensure a proper seal.

Can I Use Any Sealant For Roofing Applications? 

No, it is important to select a sealant that is designed specifically for roofing applications. Roofing sealants are designed to withstand harsh environmental conditions such as UV rays, extreme temperatures, and heavy rain.

How Long Does It Take For Roofing Sealants To Cure?

The cure time of roofing sealants varies depending on the type of sealant and environmental conditions. Generally, most sealants require at least 24 hours to cure fully, but some specialised sealants may take longer.

Do I Need To Prepare The Surface Before Applying Roofing Sealant? 

Yes, it is important to prepare the surface by cleaning it thoroughly and removing any debris, dirt, or old sealant before applying a new layer of roofing sealant. This will ensure proper adhesion and a strong seal.

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