Sealant specialists in Farningham
Commercial sealant contractors in Farningham, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Mouldy silicone around WCs, urinals and vanity tops
- Shrunken sealant along kitchen worktops and splashbacks
- A top-up bead over failed sealant, now lifting
Need commercial sealant contractors in Farningham?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Sealant specialists in Farningham
Inside a commercial building, sealant does a lot of quiet work: around sanitaryware, along worktops and splashbacks, at window boards, partition heads and floor junctions. Externally it keeps rain out of frame perimeters, panel joints and movement joints. We deal with internal and external sealant joints alike. If you’re dealing with expansion joints with the sealant torn out and untidy joints in a reception, shop floor or lobby, we can put it right, whatever the surface. Searching for sealant specialists in Farningham? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.
Occupied buildings in Farningham need the work phased: we agree the order with you and hand back each area with its cure time.
In and around smaller places such as Farningham, the commercial buildings we are asked about are often pubs, shops, village halls and barns converted to offices. Kitchens, toilets and window frames in all of them need resealing sooner or later.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Where
- Farningham (DA4)
- Wider area
- Kent
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
On site: what to expect
On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, with the work itself typically taking part of a day on a small job and longer where several buildings or phases are involved. Rural sites near Farningham may need directions, gate codes or a contact on site. Send that with the details and we’ll confirm the plan with the quote.
- Send details through our quote form, or ask for a site visit.
- We diagnose the cause of failure and price a fixed scope.
- Where parts of the building must stay open, the work is phased.
- Old sealant is cut out completely, never sealed over.
- Each joint gets a suitable sealant, laid to depth and tooled.
- A final walk-round, then the 12-month guarantee applies.
Before we start on site
- Let us know about inductions and permits
- Send any specification or drawings in advance
- For older buildings, check the asbestos register before work
Ask for a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to ring 01277 525 020 or email a schedule or drawings with what you know.
Related advice
Also near Farningham
Also in Farningham
Quoting for work in Farningham
Quotes vary with the job. Expect it to depend on:
- How much existing material needs removing
- Travel to remote or island sites
- Working within restricted access windows
- Quantities, in metres or numbers
Every site prices differently: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.
Before you send an enquiry
A good diagnosis starts with the right details. Tell us:
- Where the site is, with the postcode
- Asbestos survey details if the building is older
- Rough lengths or quantities, or drawings if you have them
- Photos of the joints, close up and from further back
Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to ring 01277 525 020 or send photos by email.
Site staff or a sealant specialist?
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
Looking after the joints
Cleaning and maintenance staff play a part too. Share these points with them:
- Keep washroom and kitchen extraction working
- Make sure contractors see the asbestos survey before cutting out old mastic
- Add sealant to the planned maintenance inspection list
- Keep barriers up until the new sealant has cured
New joints need their full cure time before they take water, cleaning or traffic. That time depends on the product, the temperature and the joint depth, so we confirm it for each area at handover. Keeping signs or barriers up until then protects the finish.
An open joint in a food area or toilet collects dirt and moisture that cleaning can’t reach. Cleanability is something environmental health officers pay attention to, so sound, smooth joints matter.
For managing agents and facilities managers
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Farningham can form part of a wider programme across Kent.
We work for building owners and managing agents on everything from one building to a spread of sites around Farningham. One quote can cover more than one site, which keeps the paperwork simple.
How the job changes by surface
Movement joints in walls and floors
Movement joints in walls and floors let the structure expand and contract. Failed seals let grit and water in, and the edges start to suffer. The joints are resealed using a sealant matched to the movement and any traffic.
Fire-rated seals where specified
Fire-rated sealant is only one type of fire-stopping product. Collars, wraps, batts and boards are specified for other services and gaps.
Questions about Farningham
Must a hotel around Farningham close while you work?
Rarely, if ever. We take a few rooms out at a time. We agree the order of rooms and the timings with you before we start.
Is Southern Cross Industrial Estate, near Farningham, within your area?
Yes. Estates, retail parks and business parks around Farningham, Southern Cross Industrial Estate among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
How long will the new sealant last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
Do you check for asbestos before removing sealant?
We check the asbestos register or survey before any old sealant is disturbed. Managing asbestos is the dutyholder’s responsibility, and we don’t remove asbestos-containing materials.
What guarantee do you give on resealing?
Each job sits under our 12-month guarantee. Keeping joints clean and inspected helps them last well beyond that.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.
Shops, offices and hotels in and around Farningham
Central London is about 16 miles from Farningham. The commuter belt holds a great many offices, retail parks and business parks. Firms with branches across the South East can use one contractor for every site. At least three named trading, business or retail sites lie within about 3 miles of Farningham. Units on sites like these change tenants and get refitted, and each refit leaves joints to seal, often in a colour the occupier specifies.
For premises near Eynsford station, 1.4 miles to the south-west of Farningham, footfall is part of the plan: work is phased so shops and offices keep trading. A business with units at Southern Cross Industrial Estate and Gateway Trading Estate needn’t use two contractors for its sealant. A unit on an estate like Southern Cross Industrial Estate, 1.7 miles to the north-west of Farningham, typically has an office front, a trade counter and staff facilities with joints of their own.
Farningham is about 5 miles south of Dartford, in Kent. Businesses, contractors and managing agents in Farningham can call on us for sealant joints. Across Kent, 931 places are covered, including Farningham. London is covered too, around 16 miles from Farningham.
Postcode districts covered here: DA4 for sealant joints. If your site is on High Street, London Road and South Hall Close or close by, send details and we’ll quote for sealant joints. Sites close to Farningham are covered too, including Eynsford (1 mile south-west), Horton Kirby (1 mile north-east), Maplescombe (2 miles south-east), Speed Gate (2 miles east) and Fawkham Green (3 miles east). Nearby towns on our patch include Maidstone (15 miles south-east), Dartford (5 miles north), Sevenoaks (7 miles south), Gravesend (8 miles north-east), Tonbridge (13 miles south) and Northfleet (7 miles north-east).
Landmarks near Farningham
Recent enquiries here include premises near Pied Bull pub and the streets around them. The closest station to Farningham is Eynsford station, about 1.4 miles south-west. Other landmarks nearby include Eynsford Castle (0.7 miles south-west) and Darenth Park Hospital (4.2 miles north). Open spaces near Farningham include The Warren.