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Sealants & Mastic

Building in a domestic or commercial setting demands the use of high-grade sealants and mastic to protect the work from attack by water, dust, air, sound, or fire.

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Sealants prevent water and other fluid substances from passing through joints, openings, or other material surfaces, and are also very important for the prevention of air, insects, dust, sound, and fire transmission.

Building in a domestic or commercial setting demands the use of high-grade sealants to protect the work from attack by water, dust, air, sound, or fire.

Furthermore, sealants provide protection from insects, mould, and fungi.

Amongst our highly effective sealants is a high-grade lead sealant which bonds well to metals and masonry. Also available is a flexible, neutral curing silicone mastic for construction applications which is particularly suitable for sealing around doors and windows between the frame and the masonry.

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Association of Sovereign Authorised Contractors
Independently guaranteed quality of workmanship

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Sovereign are as meticulous about the contractors we work with as we are about our world beating products.

Contractors who achieve membership of the Association of Sovereign Authorised Contractors (ASAC) are recognised for the quality of their work, their high level of skills and experience, and commitment to maintaining high standards.

Any individual or company employing an ASAC member has the peace of mind that comes from knowing there’ll be a job well done and one which has an insurance-backed independent guarantee.

Find an ASAC member near you >

Association of Sovereign Authorised Contractors
Independently guaranteed quality of workmanship

Sovereign are as meticulous about the contractors we work with as we are about our world beating products.

Contractors who achieve membership of the Association of Sovereign Authorised Contractors (ASAC) are recognised for the quality of their work, their high level of skills and experience, and commitment to maintaining high standards.

Any individual or company employing an ASAC member has the peace of mind that comes from knowing there’ll be a job well done and one which has an insurance-backed independent guarantee.

Apply to become a member >

Find an ASAC member near you >