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

Facade Sealing in Chatham

Facade joint and window perimeter sealing on commercial buildings throughout Chatham and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Damp patches beside frames after rain
  • Gaps between rainscreen or cladding panels
  • Air leaks through failed facade joints
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Facade sealing in Chatham

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

FAQs: Chatham

Will you take on work at estates like Horsted Retail Park, close to Chatham?

Yes. We cover Chatham and the area around it, including industrial estates, business parks and retail parks such as Horsted Retail Park. Send details of the unit and the work through our quote form for a quick quote.

Is a hospital such as Medway Maritime Hospital somewhere you can work?

Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Are you CHAS accredited and on Constructionline?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

Can you work on upper floors?

That varies with the building and the access on offer. When you give us a call on 01277 525 020 or email drawings and photos, describe the access, and we’ll plan the work with you.

How soon can the area be used again?

Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.

How many days will you need on site?

That varies with the scale of the job, though a typical visit typically takes longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. For bigger or phased jobs, we’ll set out a timescale with the quote.

Can you find out why a window is leaking?

Yes. Photos are often enough to start, followed by a visit if needed. Many frame leaks are sealant failures, though not all, and we’ll tell you which.

Facade sealing for commercial buildings in Chatham

Most facade joint failures trace back to the joint, not just the sealant. The width has to suit the expected movement and the sealant’s movement capability, and closed-cell rod sets the depth, keeping the bond to two faces. The enquiries we see most involve unsightly perimeter sealant on a visible elevation and leaks at window and door perimeters, on coping and flashing joints, cladding panel joints and shopfront frames. For commercial sealant work in Chatham, you deal with one contact from quote to sign-off, whether it’s one building or several.

In a large town such as Chatham, plenty of construction is refurbishment: recladding units, new shopfronts, replacement windows. Each job leaves facade and perimeter joints that need the right sealant, backing rod and depth.

Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Chatham (ME5, ME4, ME7, ME1)
Region
Medway
Cover
12 months on our workmanship
Quotes
A fixed quote before we start
Phone
01277 525 020
Last updated
3 November 2026

How the job changes by surface

Coping and flashing joints

Where the specification calls for sealant at copings or flashings, we can seal them. They sit in the most exposed positions on the building and need a durable external sealant.

Precast concrete panels

Precast panel joints have to absorb thermal and structural movement. We use a sealant with the right movement capability, set over backing rod.

Why it’s worth doing now in Chatham

Scaffold or access already on site makes resealing much simpler. Combine it with planned external works and you only arrange access once, saving a second set-up. Businesses in Chatham often have several buildings with joints of a similar age. Dealing with them together saves repeat visits.

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

Why clients in Chatham choose us

  • Specification-led, product-correct work
  • Standard and matched colours in many product ranges
  • Fully insured, including public liability cover
  • Over 20 years of commercial sealing

Take a look at how commercial sealant jobs are priced and our accreditations and insurance.

What sealant work can’t fix

Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:

  • Providing access systems for the work
  • Water getting in through cracked render or porous masonry
  • Work on the window or framing system itself

If you are not sure, just phone 01277 525 020 or use the quote form and we will give you a straight answer.

Where we work in Chatham

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

Facade sealing around Chatham: how the place shapes the job

Central London is about 29 miles from Chatham. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, and each scheme needs its mastic sealed to programme. Rainfall across the South East, Chatham included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so external mastic is timed for workable conditions and agreed with the site manager.

Work at a hotel such as Bridgewood Manor Hotel, 1.3 miles south-west of Chatham, tends to be programmed around bookings, mastic included. For contractors at a college like MidKent College Gillingham Campus, which lies north of Chatham, perimeters and internal sealant are timed for the holidays. Units on estates such as Horsted Retail Park, 1.1 miles west of Chatham, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.

Chatham is about 29 miles east of London, in Medway. Anywhere in ME5, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Across Medway, 54 places are covered, including Chatham. Sites around London have their own page, roughly 29 miles from Chatham.

We cover the ME5, ME4, ME7 and ME1 postcode districts. Streets here include Luton High Street, Market Place and High Street, and sites on any of them can send details for a fixed quote. With the A2 and A229 nearby, Chatham is straightforward for us to reach. Just outside Chatham, we also work in Luton (1 mile north), Hale (1 mile north-east), Darland (1 mile east), Capstone (1 mile east) and Walderslade (1 mile south). Bigger towns within reach include Rochester (3 miles north-west), Rainham (3 miles east), Strood (3 miles north-west), Park Wood (3 miles east), Twydall (3 miles north-east) and Hoo St Werburgh (5 miles north). Among the larger centres in Medway is Chatham, and its commercial and public buildings are all within our area.

Local landmarks in Chatham

Recent enquiries here include premises near The Huntsman pub, Walderslade Girls' School and Darland Banks. Chatham’s nearest station is Chatham station, about 1.7 miles north. Other landmarks nearby include Six Poor Travellers House (2.5 miles north-west) and Rochester Castle (2.6 miles north-west). The countryside around Chatham includes Blue Bell Hill and Burham Down.

Map of Chatham © OpenStreetMap contributors

General trades versus a specialist

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

From enquiry to sign-off

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. Town-centre jobs in Chatham can mean limited parking and loading, whereas edge-of-town units normally have yard space. Either way, tell us what’s available.

  1. We start with photos, drawings or a visit to see the joints and agree access.
  2. Product choice follows the joint’s movement and substrate.
  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.

Getting the site ready

  • Arrange parking or a loading space
  • Have the specification and drawings to hand
  • Flag any permit to work we will need

Request a quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.

Get a price

Related advice

What sets the cost

There’s no standard rate for sealant work, since sites vary so much. What we look at:

  • The product specified
  • The site’s rules and procedures
  • Joint width, depth and condition
  • Access and working height

The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

Details that help us quote

However big the job, the same details help:

  • Where the site is, with the postcode
  • Your programme or deadline
  • Whether the building will be occupied during the work
  • Photos of the joints, close up and from further back

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call 01277 525 020 or send details through our quote form.

Accreditations

Trusted. Accredited. Insured.