Email: info@roseal.co.uk

Telephone: 07936 821 739

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Mastic Sealant Contractors

At ROSEAL, we’re trusted mastic sealant contractors providing high-quality silicone and mastic application services for commercial, industrial, and residential construction projects across Somerset, Dorset, Bristol, Devon, Wiltshire, Hampshire and Cornwall.

Our experienced sealant applicators deliver neat, durable, and compliant finishes on every project — from new-build developments and fit-outs to refurbishments and repairs. Whether you’re a main contractor, quantity surveyor, or facilities manager, we provide a reliable and professional service tailored to your site requirements.

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Commercial mastic sealant services

We work with leading contractors, developers, and property managers, offering a full range of commercial mastic sealant services designed for performance, precision, and longevity.

Our expertise covers:

  • Interior and exterior sealant application

  • Expansion and movement joint sealing

  • Silicone and polysulphide joint sealing

  • Façade, cladding, and curtain wall sealing

  • Wet area and sanitary sealing (bathrooms, kitchens, and washrooms)

  • Fire-rated and acoustic sealant works

  • Industrial and warehouse joint sealing

  • Carpark joint sealing

Every project is completed using high-grade, manufacturer-approved materials to ensure watertight, flexible, and long-lasting results.

Why choose our mastic applicators?

Experienced, CSCS-Qualified Sealant Applicators

Our team is made up of skilled mastic and silicone specialists with years of on-site experience across commercial and residential projects. Each operative holds full CSCS certification and follows strict site safety procedures — ensuring professional results and complete compliance on every job.

Precision, Quality & Clean Finishes

We understand the importance of a neat, consistent seal that not only performs but also looks professional. Using premium-grade materials and meticulous application techniques, we deliver long-lasting, watertight finishes that meet both client expectations and construction standards.

Reliable Service & Flexible Scheduling

We know deadlines matter. That’s why we provide reliable scheduling, clear communication, and flexible working hours to suit your build program. Whether it’s a last-minute project or large-scale development, we deliver on time, on budget, and with zero disruption to your site operations.

Mastic sealant company you can trust

As a leading mastic sealant company, we pride ourselves on quality, safety, and consistency. All our operatives are CSCS-qualified, trained in site health and safety, and experienced with the latest sealant systems.

We understand that tight schedules and clean finishes matter — that’s why we deliver smooth, efficient service with zero disruption to your build program.

  • Fully insured and accredited

  • Proven track record with commercial clients

  • Detailed RAMS and method statements supplied

  • Competitive rates and flexible availability

Commercial Sealant Services

Construction sealant specialists

From structural glazing to internal finishing, our construction sealant specialists work with precision to meet the technical demands of every job. We collaborate closely with site managers and other trades to ensure the right sealant is applied to the right substrate — every time.

sealing external frames at Bradfords in Yeovil, Somerset

We use premium products from trusted brands such as Sika (Everbuild), Mapei, 3C and BuildMaster to achieve superior adhesion, movement capability, and finish.

Our team has extensive experience working across:

  • Residential developments

  • Retail and commercial units

  • Education and healthcare sites

  • Office fit-outs and refurbishments

  • Civil and industrial projects

What our clients say

We take pride in the quality of our work and the trust our clients place in us. From homeowners needing a simple bath reseal to main contractors managing large construction projects, our customers appreciate our reliability, precision, and professional finish. Here’s what some of them have said about working with us.

Acoustic and Fire-Rated mastic sealant application

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Looking for reliable mastic sealant contractors for your next project?
Contact ROSEAL today for professional advice, competitive pricing, and guaranteed workmanship.

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Frequently asked questions