Commercial sealant, done properly.
Commercial and contractor sealant applicators for main contractors, developers, facilities managers and managing agents. CHAS accredited, Constructionline member, CSCS-carded applicators.
Sealant work for the people who run buildings
Mastic Doctor has worked as commercial sealant contractors since 2005, sealing the joints that keep buildings weathertight, hygienic and compartmented. We work for main contractors, developers, facilities managers, managing agents and building owners across South East England, Greater London and all of Scotland.
From facade and window perimeter joints to movement joints, washrooms, warehouse floors and fire-rated sealant where it is specified, every job follows the same route: send details, get a fixed quote, we seal, and our workmanship carries a 12-month guarantee. Single jobs, multi-site work and planned programmes are all welcome. We are CHAS accredited and a Constructionline member, with CSCS-carded applicators and £5m public liability insurance.
View all servicesFind your sector
Construction sites, offices, industrial units, hotels, healthcare and residential blocks: the joints differ, and so does the way the work is planned.
Construction
Mastic packages for main contractors and developers.
Offices & facilities
Planned sealant work for FMs and multi-site estates.
Industrial & warehouses
Floor joints, loading bays and movement joints.
Hotels
Bathrooms and public areas, phased room by room.
Healthcare & care homes
Washrooms and fire-rated sealing where specified.
Managing agents & housing
Blocks, communal areas and estate programmes.
Nine commercial sealant services
Commercial sealant
Sealant work for offices, shops, hotels and other commercial buildings.
02Construction mastic
Mastic packages for new-build and refurbishment projects.
03Expansion joints
Expansion and movement joint sealing in walls, decks and floors.
04Fire stopping
Fire-rated and intumescent sealing of service penetrations and linear gaps.
05Facades and windows
Facade joint and window perimeter sealing on commercial buildings.
06Coloured sealant
Coloured and colour-matched sealant for visible joints.
07Floor joints
Floor joint sealing and filling in warehouses, factories and industrial units.
08Washrooms
Sealing in commercial washrooms, showers, kitchens and wet areas.
09Mastic sealing
Mastic sealing for building owners, managing agents and housing associations.
The right joint, prepared properly
Most sealant failures come back to preparation, joint design or the wrong product. That’s where our time goes.
Since 2005
Over 20 years sealing commercial buildings for contractors, FMs and managing agents.
Accredited
CHAS accredited, Constructionline member and CSCS-carded applicators.
Insured
£5m public liability insurance, with certificate details supplied on request.
Trusted. Accredited. Insured.
Got questions?
Answers to the questions contract managers, FMs and site teams ask us most. Can’t see yours? Get in touch.
Get a quoteWhat does Mastic Doctor do?
We are commercial sealant applicators, working for businesses and contractors on facade, movement, floor, washroom and fire-rated sealant joints.
Where do you work?
We cover South East England, Greater London and all of Scotland, with one phone number for every area: 01277 525 020.
How do I get a price?
Send drawings, photos, approximate joint lengths and the site address through our quote form, and we’ll reply with a fixed price or book a site visit.
Are you accredited and insured?
Yes. We are CHAS accredited and a Constructionline member, our applicators hold CSCS cards, and we carry £5m public liability insurance.
Is the work guaranteed?
Yes. Our workmanship carries a 12-month guarantee.
South East England, London and Scotland
We cover every county in the South East, all of Greater London and every Scottish council area. Pick an area, or see the city pages.
Send us the details for a fixed quote
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.