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Commercial Mastic Contractors: What Should You Look For?

Published 24 August 2026

Written by Next Level Sealants

Not every sealant contractor is the right choice for commercial work. Here is what matters.

Proper preparation

The main reason sealant fails is poor preparation. A good contractor removes old sealant completely, cleans the joint and primes where necessary. Skipping this step saves time on the day but costs money later.

Correct product selection

Commercial work uses different products for different joints. Silicone, polyurethane, polysulphide, hybrid and acrylic systems each have their place. The contractor should select the right sealant for the substrate, joint size, movement and exposure, based on manufacturer guidance.

Site discipline and documentation

On commercial sites, turning up on time, working safely and providing risk assessments and method statements matters. Insurance should be in place and available on request.

Frequently Asked Questions

Can you provide insurance documentation?

Yes. We can provide public liability insurance documentation for commercial and site-based work where required.

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