Commercial sealant contractors in Farringdon, Hampshire
Sealant work for offices, shops, hotels and other commercial buildings throughout Farringdon and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Expansion joints with the sealant torn out
- Mouldy silicone around WCs, urinals and vanity tops
- Untidy joints in a reception, shop floor or lobby
Commercial sealant contractors in Farringdon
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Sealant applicators in Farringdon
Most commercial buildings carry hundreds of metres of sealant that nobody thinks about until it fails. Mastic Doctor works as a commercial sealant contractor for facilities managers, managing agents and main contractors looking after property in Farringdon. We find out why the sealant joints failed, take them out and seal again using a sealant that suits the joint. We work on movement joints in walls and floors, window and door perimeters and washrooms and tea points, and what we are called in for most is a top-up bead over failed sealant, now lifting and expansion joints with the sealant torn out. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Farringdon is the same: the right product in a properly prepared joint.
The most common commercial job in Farringdon is resealing joints that have simply reached the end of their life: split, chalky or peeling, with leaks or mould starting behind it.
Business units in the countryside around places like Farringdon are often converted barns, stables or farmyards. Old masonry beside new aluminium, timber and plasterboard gives plenty of joints between materials that move differently, and a sealant colour that suits the building’s character is often part of the brief.
Our workmanship is guaranteed for 12 months, in Farringdon as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Farringdon (GU34)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
On site: what to expect
Where the site stays busy, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then handed back before we move to the next. Smaller jobs around Farringdon can be grouped with others nearby, which keeps travel down. You’ll have a fixed quote before work starts.
- We begin with whatever information you have, whether that’s photos, a drawing or a list of locations, or we arrange a site visit.
- Next comes a diagnosis and a fixed quote.
- We plan around your site hours and access windows, phasing the work where areas have to stay in use.
- We strip the failed bead and prepare both faces of the joint.
- We fit backing to the right depth, prime where specified and lay the new bead.
- Each area is inspected, signed off and backed by our 12-month guarantee.
Getting the site ready
- Tell us your opening times and when work is allowed
- Tell staff and tenants when we’ll be in
- Tell us which areas need to stay in use
Getting a fixed quote
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, speak to us on 01277 525 020 or use the quote form.
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Common problems we fix in Farringdon
No sealant joint is permanent. Its life comes down to movement, UV and weather, how it’s cleaned, how much traffic passes it and what was used in the first place. In commercial buildings those factors tend to act together.
Typical triggers for a call:
- Frame sealant that has cracked, shrunk or pulled away
- Hardened, chalky sealant on south-facing or exposed elevations
- Layers of sealant, all of them failing
- Damp patches where an external joint has failed
Premises within reach of Alton station (to the north of Farringdon) often have busy frontages where joints are seen by everyone passing.
What to look for in a quote
- Is the sealant right for the movement and the substrate?
- What the guarantee covers, and for how long
- Their public liability cover
- Health and safety accreditation such as CHAS
Why it’s worth doing now in Farringdon
Fixing joints complaint by complaint is a costly way to manage sealant. A planned programme groups work by building or area, cuts repeat visits and gives you a budget figure. We will suggest an order, worst sealant joints first. Around Farringdon, it’s better to renew all the failing joints at once, rather than one at a time. Send photos of each area and we’ll quote for the lot.
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Why appoint us
- CHAS accredited
- Public liability insurance in place
- Constructionline member
- Sealing commercial buildings since 2005
Take a look at how commercial sealant jobs are priced or our accreditations.
What sets the cost
Before we quote, we look at:
- How accessible the joints are
- The site’s rules and procedures
- Location, for remote and island sites
- Which sealant the job calls for
The price depends on how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote once you have the details.
Before you send an enquiry
There’s no need for a formal survey. These details are enough to start:
- The type of building and who uses it
- Where the site is, with the postcode
- How the joints are reached, and at what height
- Your programme or deadline
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, give us a call on 01277 525 020 or email drawings and photos.
What Farringdon’s businesses ask us to seal
Farringdon lies roughly 47 miles out from central London. This part of the South East is dense with business parks and out-of-town offices. Firms with branches across the South East can use one contractor for every site. Farringdon sits in one of the drier corners of the country, the South East. That helps, but frost and condensation on glass and coated frames still stop outside sealing on some winter mornings.
A business with units at Farringdon Industrial Centre and Farringdon Business Park needn’t use two contractors for its sealant. Industrial estates such as Farringdon Industrial Centre (to the west of Farringdon) have offices, trade counters and welfare areas whose sealant ages like any other building’s.
Farringdon is about 3 miles south of Alton, in Hampshire. Our applicators travel to Farringdon for work on sealant joints, handled exactly as we handle every other area. Across Hampshire, 723 places are covered, including Farringdon. For work in that direction, see our Portsmouth page (21 miles or so).
Commercial sites across GU34 are covered. Streets here include Hall Lane, Crows Lane and Gaston Lane. Close to Farringdon, our area also takes in Upper Farringdon (1 mile north-east), Lower Farringdon (1 mile west), Chawton (2 miles north), Hartley Mauditt (2 miles east) and Alton (3 miles north). Further afield, our area takes in Basingstoke (12 miles north-west), Winchester (15 miles west), Fleet (13 miles north-east), Horndean (14 miles south), Aldershot (14 miles north-east) and Petersfield (8 miles south).
Around Farringdon
Recent enquiries here include premises near Rose and Crown Inn and the streets around them. The nearest railway station is Alton station, about 3 miles north. A little further out are The Romany Museum (2.3 miles south-east) and Alton Community Hospital (2 miles north). Open spaces near Farringdon include Selborne Hill.
Maintenance after handover
Regular inspection catches problems early. In particular:
- Don’t let cleaning or traffic back on before the cure time is up
- Check the asbestos register before anyone disturbs old sealant in an older building
- Put external and wet-area joints on a regular inspection round
- Keep washroom and kitchen extraction working
Later works are the usual way new joints get damaged. When fittings are moved or cabling added, the sealant nearby is easily disturbed and the joint gets left open. If that happens, phone 01277 525 020 or send photos by email and we will price putting it right.
Sealant rarely fails all at once across a building. The first failures are often a warning about the rest, so it makes sense to look at the wider elevation or block. We can assess the lot and suggest what to do now and later.
When it isn’t the sealant
Being straight saves everyone time. Fresh joints won’t solve:
- A failed roof covering or waterproofing membrane
- Cracking that needs a structural engineer to look at it
- Leaks from pipework, wastes or valves (that’s plumbing)
Not sure which it is? You can give us a call on 01277 525 020 or send details through our quote form and we will tell you honestly before you book.
Where we work in Farringdon
- Floor and threshold joints
- Movement joints in walls and floors
- External facade joints
- Washrooms and tea points
- Kitchen worktops and splashbacks
- Window and door perimeters
Farringdon: questions and answers
Is a smaller place like Farringdon outside your area?
Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Good photos up front let us bring everything on the first visit.
Can you supply sealant in our brand colour for a site in Farringdon?
Yes, sealants come in a wide range of standard colours, and matching to RAL references, cladding, stone or frames is a common request. Available colours for the product are confirmed with the quote.
Could the old sealant in an older building contain asbestos?
Some older mastics did contain asbestos. That’s why we ask for the asbestos information first, and stop if a material is suspect until it’s tested. HSE guidance on asbestos is a useful reference.
How do you choose the sealant?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Is failed sealant stripped out, or sealed over?
Every scrap of failed sealant is removed before the new bead goes on. Sealing over traps water and lifts once the joint moves.
Can areas stay open during the work?
It’s mostly about sequence: we agree access windows, phase the work and keep enough facilities open. Tell us what has to stay open and we will plan the job around it.
Do you work to architects’ specifications?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.