Cambridge Mastic Man: Commercial & Domestic Sealant Contractor
New labs and offices, careful work on older buildings and busy family homes: we’re a mastic contractor for Cambridge sites and a mastic man for its homes, sealing glazing, cladding, movement joints and interiors.
- 20+years in construction
- IPAF3a & 3b
- SilverConstructionline
- £10memployer’s liability
- RAMSon request
A historic city that never stops building
Cambridge pairs some of the most famous historic streets in the country with one of its busiest construction markets.
Around the colleges and King’s Parade, buildings are old, listed and built of stone and soft brick. Beyond them, new districts such as Eddington, Trumpington Meadows and the area round the station have added thousands of homes, while science parks and the biomedical campus keep adding labs and offices.
Commercial projects here expect high standards and good paperwork, and older buildings need a gentle touch. We bring both.

Sealant work across Cambridge
Curtain walling & glazing
Weather-sealing round curtain walling, glazing and windows on labs, offices and apartments.
Façade sealant →Hygienic & lab interiors
Hygienic, food-safe and clean-room sealants where specified, to the manufacturer’s method.
Movement joints
Brick, block, precast and concrete joints sealed with low-modulus products.
Expansion joints →Residential new build
Plot mastic inside and out for developers and main contractors.
Commercial mastic →Older buildings
Stone and soft brick joints sealed with compatible, non-staining products.
Homes & lettings
Bathrooms, kitchens and frames resealed for owners and landlords.
Window & door mastic →Tiled and hygienic areas
In commercial kitchens, washrooms and lab spaces the sealant is part of the hygiene system. We use the product the specification calls for, colour-matched to grout or finishes, and leave joints smooth so they can be cleaned.
- Hygienic and food-safe sealants where specified
- Colour matched to grout and finishes
- Out-of-hours working can be arranged
- RAMS and inductions as required

Stone copings and brick piers
Joints under copings and between stone and brick need to stay flexible without staining. We use non-staining sealants on natural stone, the same approach we’re taking on the stone façade at the new City of London law courts at Salisbury Square.
Failed mortar or mastic is cut out first, so the new sealant bonds to sound material.

Insured & pre-qualified
Peace of mind for homeowners, builders and main contractors.
- £10m Employer’s LiabilityInsurance cover
- £5m Public Liability & Professional IndemnityInsurance cover
- Constructionline Silver member

- CSCS Skilled WorkerSealant Applicator (NVQ Level 2)
Over 20 years in construction
Products we use
Professional-grade sealants and adhesives from leading manufacturers.
Brand names and logos are trademarks of their respective owners and are shown to identify products we use. No endorsement is implied.
Companies we’ve worked for
Main contractors, housebuilders and specialist firms.
Logos show companies we have worked for. They are not endorsements.
Villages we cover near Cambridge
Histon, Impington, Girton and Cottenham to the north, Fulbourn and Teversham to the east, and Grantchester, the Shelfords, Sawston and Duxford to the south.
Nearby town pages: Cambourne · St Ives · Royston · Huntingdon · County page: Cambridgeshire · Work across the wider region: East Anglia
- Grantchester
- Coton
- Fen Ditton
- Girton
- Teversham
- Impington
- Barton
- Milton
- Histon
- Madingley
- Horningsea
- Hauxton
- Great Shelford
- Comberton
- Stow-cum-Quy
- Little Shelford
- Stapleford
- Oakington
- Landbeach
- Fulbourn
- Haslingfield
- Harston
- Waterbeach
- Harlton
- Newton
- Cottenham
- Sawston
- Rampton
- Babraham
- Whittlesford
- Pampisford
- Little Abington
- Duxford
- Great Abington
- Hinxton
Cambridge sealant questions
Do you seal commercial, lab and office buildings in Cambridge?
Yes. We seal curtain walling and glazing, cladding, movement joints and internal joints after the fit-out trades, including hygienic and food-safe sealants where they’re specified. RAMS are available on request and we work to your site rules and inductions.
Can you work on older and listed buildings?
Yes. On stone, older brick and lime mortar we use compatible, non-staining, low-modulus products and keep the work neat. Consent for listed buildings is the owner’s responsibility, and we’ll work to whatever is agreed.
Do you do domestic work in Cambridge too?
Yes. Bathrooms, kitchens and window frames for homeowners and landlords across the city and the villages on this page, from Histon and Girton to Sawston and the Shelfords.
How do you deal with city-centre access and parking?
We plan it in advance: loading times, permits and where the van can go. Tell us about any restrictions when you enquire.
Send the package or a photo
Looking for a mastic man in Cambridge for a home, or a contractor for a site? Contractors, email drawings, a spec or a joint schedule to office@pioneersealants.co.uk. Homeowners, WhatsApp a photo to 07757 772 880.
- Opening hours
- Monday – Friday8:00am – 6:30pm
- Saturday9:00am – 4:00pm
- SundayClosed





















