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

Facade Sealing in Chattenden

Facade joint and window perimeter sealing on commercial buildings in Chattenden. CHAS accredited and fully insured, with a 12-month guarantee.

  • Air leaks through failed facade joints
  • Failed seals around shopfront and entrance frames
  • Unsightly perimeter sealant on a visible elevation
1
Send details
Photos, drawings or a schedule, or we 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
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
£5m public liability

Need facade sealing in Chattenden?

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

Why deal with it now?

Patch repairs over old sealant tend to come back. A full cut-out and reseal costs more on the day but lasts much longer. Converted and older buildings near places like Chattenden tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

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 us?

  • Colours chosen to suit frames, cladding or finishes where possible
  • Fully insured
  • Constructionline member for supplier checks
  • One contact handling all your sites

See our cost guide and our accreditations and insurance.

Facade sealing in Chattenden, done properly

Managing agents and owners in Chattenden 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. Each job carries our 12-month guarantee. If you have new sealant peeling off old mastic and air leaks through failed facade joints, we can put it right, whatever the surface. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Chattenden, preparation and product choice get the time they need.

In the countryside around places like Chattenden, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.

We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Place
Chattenden (ME3)
Wider area
Medway
Guarantee
12 months on every job
Price
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

How a job runs

Inspect, seal, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. If others near Chattenden need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  1. We look at the joints, the drawings and the access before pricing.
  2. Failed sealant is cut out along its full length.
  3. Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
  4. Closed-cell rod fixes the depth, and the sealant grips two sides only.
  5. The new sealant goes in and is tooled firmly onto both faces.
  6. The completed runs are checked with you, then the 12-month guarantee applies.

Before we start on site

  • Explain the parking and delivery arrangements
  • Send asbestos survey details if the building is pre-2000
  • Send any specification or drawings in advance

Getting a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or use the quote form.

Ask for a quote

Related advice

For managing agents and facilities managers

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

Your questions answered

Is a smaller place like Chattenden outside your area?

No. Places such as Chattenden are covered as much as the big towns. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Would you work within a site like Medway Maritime Hospital?

Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.

Do your applicators hold CSCS cards?

Yes. If you need card details for site access, let us know and we will send them with the quote.

How long will the new sealant last?

There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

Can you work to our specification?

Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.

Will rain stop the work?

Rain and frost can pause external sealing. The programme allows for it and we tell you if the forecast changes things throughout the job.

Do you replace windows or glass?

No. Glazing, windows and glass replacement aren’t part of our work. We seal the joints around them, such as perimeter joints where frames meet the structure.

Doing it in-house

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Contractors’ notes for Chattenden

Chattenden lies within about 2 miles of the sea. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, so joint design, primers and product choice deserve extra care. The South East is one of the drier parts of the UK. 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.

When a college such as MidKent College Gillingham Campus, 1.9 miles to the south of Chattenden, builds or refurbishes, the mastic package usually has to fit around students and staff. For contractors on a campus like University of Greenwich - Medway (1.5 miles south of Chattenden), facade and perimeter sealing has to fit around students and term dates.

Chattenden is about 2 miles north-east of Rochester, in Medway. If you are looking for facade sealing in Chattenden, we can help. Across Medway, 54 places are covered, including Chattenden. We also cover London, some 28 miles away.

We cover the ME3 postcode districts. Streets here include Songbird Crescent, Sparrow Drive and Main Road. Sites close to Chattenden are covered too, including Lower Upnor (1 mile south), Upper Upnor (1 mile south), Wainscott (1 mile south-west), Hoo St Werburgh (1 mile east) and Cooling Street (2 miles north-west). Nearby towns on our patch include Gillingham (4 miles south-east), Chatham (4 miles south), Rainham (5 miles south-east), Strood (3 miles south-west), Luton (3 miles south) and Park Wood (6 miles south-east).

Around Chattenden

Around Chattenden, our work takes us to commercial buildings near The Pier pub, The Hundred of Hoo Academy and Lower Lines Park and the streets around them. For rail, the closest station is Strood station, about 2.1 miles south-west. A little further out are Pentagon Shopping Centre (2.5 miles south) and Upnor Castle (0.9 miles south). Not far away are Gad's Hill and Rede Common.

Map of Chattenden © OpenStreetMap contributors

Signs you need facade sealing in Chattenden

Not every failure is in the sealant: if the edge of the render, concrete or coating breaks away, the bead goes with it. We tell you when the edges need repairing before resealing.

Most enquiries start with one or more of the following:

  • Perimeter joints where frames meet the structure
  • Weathered facade joints that have lost their grip
  • Facade joints cracked through the middle
  • Damp patches beside frames after rain

Projects at schools like Chattenden Primary School work to term dates, so mastic is programmed tightly.

Comparing quotes

  • How joint depth will be controlled
  • How they handle RAMS and site documents
  • Whether primer will be used where the manufacturer specifies it
  • What level of public liability insurance do they hold?

Choosing a commercial sealant contractor

Looking after the joints

For the best life from the joints:

  • Brief window cleaners about newly sealed joints
  • Inspect facade joints on a regular cycle
  • Share access with other external trades
  • Clear debris that holds water against joints

After heavy weather, check vulnerable elevations for signs of water inside. An early report typically means a small reseal rather than a bigger repair.

Building facade joints into a maintenance cycle avoids emergency repairs. Regular checks let you renew joints before water gets in instead of after the damage.

Accreditations

Trusted. Accredited. Insured.