The Mastic Doctor team standing beside their branded vans outside an office building
Kent · England

Facade Sealing in Dartford

We carry out facade joint and window perimeter sealing on commercial buildings in Dartford and the surrounding area. Send photos or drawings for a fixed quote.

  • Weathered facade joints that have lost their grip
  • Damp patches beside frames after rain
  • Weathered joints at frame-to-structure perimeters
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS accredited
£5m public liability

Facade sealing for Dartford sites

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Our process

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you, and each area is checked before we leave it. In a town such as Dartford, most jobs are single buildings. We start with your photos, drawings or a site visit, then send a fixed quote.

  1. We start with photographs, drawings or a visit to see the joints and agree access.
  2. We confirm the joint type, movement and the specified product.
  3. The existing bead comes out in full and both faces cleaned back.
  4. Primer goes on where the product data asks for it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. The finished joints are checked with you.

Before we start on site

  • Clear stock, furniture or equipment away from the joints
  • Have the specification and drawings to hand
  • Agree which areas must stay open

Ask for a quote

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.

Ask for a quote

Advice

About our facade sealing in Dartford

Managing agents and owners in Dartford ask us to, we reseal perimeters across whole elevations or a handful of problem windows. Either way, the method is the same: old sealant out, faces cleaned, depth set and a new bead tooled in. A 12-month guarantee applies to our workmanship. The enquiries we see most involve weathered facade joints that have lost their grip and water coming in around window frames, across window and door perimeters, stone and brick facade joints and coping and flashing joints. A single leaking joint is often how a building in Dartford first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Older town-centre buildings in places like Dartford are often converted to new uses or extended, which puts new frames and panels against old brick, stone or render. Getting the product and primer right for both faces is what keeps those joints sound.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

Where
Dartford (DA1, DA2, DA5, DA13)
Wider area
Kent
Guarantee
12 months on our workmanship
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What affects the price in Dartford

To price the job, we consider:

  • Location, for remote and island sites
  • Working within restricted access windows
  • How accessible the joints are
  • Site requirements such as inductions and permits

What a job costs comes down to the quantity of joints, how much old material needs removing and how the joints are reached. Call for a quote once you have the details.

Before you send an enquiry

A good diagnosis starts with the right details. Let us know:

  • Photos of the joints, close up and from further back
  • Specification clauses that apply
  • Anything awkward about access or site hours
  • When you need the work done

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

Common problems we fix in Dartford

A frequent fault is a bead stuck to the joint’s rear face as well as its sides. With no backing, the sealant is restrained.

Things that typically lead to an enquiry:

  • Weathered facade joints that have lost their grip
  • Damp patches beside frames after rain
  • Perimeter sealant that has split or peeled away
  • Gaps between rainscreen or cladding panels

When a college such as North Kent College, 1.1 miles south-west of Dartford, builds or refurbishes, the mastic package usually has to fit around students and staff.

What your quote should include

  • Can the work be phased to keep areas open?
  • Will CSCS-carded applicators be on site?
  • The named product and why it was chosen
  • What the guarantee covers, and for how long

Choosing a commercial sealant contractor

Sites and facades in and around Dartford

Dartford sits in one of the drier corners of the country, the South East. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so external mastic is timed for workable conditions and agreed with the site manager. Dartford has several hotels close by, all within 2 miles. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.

New wings at hospitals like Little Brook Hospital (0.8 miles east of Dartford) bring long runs of window and panel joints to seal. New units and refits on sites such as Matrix Business Park, 0.5 miles to the north-west of Dartford, need their panel and perimeter joints sealed to the specification.

Dartford is about 14 miles east of London, in Kent. Our applicators travel to Dartford for work on facade joints, handled exactly as we handle every other area. Our Kent coverage takes in 931 places. We also cover London, some 14 miles away.

Anyone looking for facade sealing in DA1, DA2, DA5 and DA13 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on High Street, Market Street and Temple Hill Square are within our area. Main routes into Dartford include the A2 and A206, useful when we plan access and materials. We also cover Temple Hill (1 mile north), Hawley (1 mile south), Stone (2 miles east), Clement Street (2 miles south) and Darenth (2 miles south-east) for facade joints. A short drive away, we cover Sevenoaks (11 miles south), Gravesend (7 miles east), Northfleet (5 miles east), Swanley (4 miles south-west), Kings Hill (14 miles south-east) and Swanscombe (3 miles east). Dartford is one of the busier places in Kent, and we take on facade joints for its commercial and public buildings.

Around Dartford

We work on buildings around The Rose pub, Stone Lodge School and Leigh Academy. Dartford has its own railway station: Dartford station. A little further out are Dartford Library (less than half a mile west) and Bluewater (2.1 miles east). Not far away are Wansunt Pit and Sawyers Lake.

Map of Dartford © OpenStreetMap contributors

Questions about Dartford

Can you work around term dates at a campus such as University of Greenwich?

Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Is Matrix Business Park, near Dartford, within your area?

Yes, sites like Matrix Business Park are within our area, along with the rest of Dartford. To start, just give us a call on 01277 525 020 or email the details over with the unit, the joints involved and your access times.

How much does the work cost?

Each job is quoted on its own details. For yours, ring 01277 525 020 or send photos by email.

Do you guarantee your work?

Yes. Workmanship is guaranteed for 12 months on every job.

Can you find out why a window is leaking?

Yes. Photos help, and you can call the office on 01277 525 020 or email the details over to arrange a visit. Many frame leaks are sealant failures, though not all, and we will be honest about which it is.

Can you send site paperwork?

Each site asks for different documents, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.

Is Dartford in your area?

Yes. Sites across Dartford are covered, and the same phone number covers every area.

Looking after the joints

Once the work is signed off, these steps help:

  • Avoid patch repairs on failed facade joints
  • Walk the elevations once or twice a year
  • Plan facade sealing alongside redecoration
  • Clear debris that holds water against joints

After heavy weather, check vulnerable elevations for signs of water inside. Catching a new leak early keeps the repair small.

Don’t wait for a full elevation to fail. A few metres resealed promptly can stop water damage spreading.

Doing it in-house

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

What sealant work can’t fix

Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is one of these:

  • Providing access systems for the work
  • Render or concrete edges that have broken away
  • Replacing glass or failed glazing units

If you are not sure, just phone 01277 525 020 or email us and we will give you a straight answer before you book.

Surfaces we seal

  • Perimeter joints where frames meet the structure
  • Coping and flashing joints
  • Window and door perimeters
  • Stone and brick facade joints
  • Cladding panel joints
  • Shopfront frames
Accreditations

Trusted. Accredited. Insured.