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

Facade Sealing in Upper Upnor

Looking for facade sealing in Upper Upnor? It’s simple: send details, get a quote, we seal, guaranteed.

  • Weathered facade joints that have lost their grip
  • Perimeter joints where frames meet the structure
  • Air leaks through failed facade joints
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m public liability

Facade sealing across Upper Upnor

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

Different surfaces, different methods

Perimeter joints at frames and structure

Where framed systems such as shopfronts meet the building structure, there is a perimeter joint to seal. We seal those perimeter joints rather than the system it surrounds.

Window and door perimeters

Frame materials vary, and so does the preparation. We clean and prime to the sealant maker’s guidance for each surface.

Facade sealing in Upper Upnor, done properly

We seal window and door perimeters, cladding panel joints, external facade joints and perimeter joints where frames meet the structure for clients around Upper Upnor. Where sealant is the specified fix, we also take on coping and flashing joints. We work on coping and flashing joints, shopfront frames and perimeter joints where frames meet the structure, and the failures we’re asked to look at most are previous reseals run over old sealant and sealant pulling away from frames or panels. A specialist sealant contractor works differently from a general builder: on jobs in Upper Upnor, preparation and product choice get the time they need.

Sites around smaller places like Upper Upnor can be a fair drive from suppliers, so we come with everything the package needs. Drawings, photos and the programme let us give a fixed quote.

We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Place
Upper Upnor (ME2)
Wider area
Medway
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What we are called out for in Upper Upnor

Not every failure is in the sealant: crumbling render, spalling concrete or flaking paint take the sealant with them. We tell you when the edges need repairing before resealing.

Common reasons buildings call us in:

  • Patch repairs that keep failing
  • Perimeter joints where frames meet the structure
  • Draughts around frames and panels
  • Water coming in around window frames

For contractors on a campus like University of Kent - Medway Campus, 0.9 miles south-east of Upper Upnor, facade and perimeter sealing has to fit around students and term dates.

Questions to ask before you book

  • What the guarantee covers, and for how long
  • Their pre-qualification and accreditations
  • Will CSCS-carded applicators be on site?
  • How joint depth will be controlled

Questions to ask before you appoint anyone

When it isn’t the sealant

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Cracked or spalling substrates that need repair before sealing
  • Replacing glass or failed glazing units
  • Joints whose design needs changing by the specifier

If you’re not sure, just speak to us on 01277 525 020 or email the details over and we’ll give you a straight answer before you book.

Where we work in Upper Upnor

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

Upper Upnor: questions and answers

Will you take on work at estates like Castle View Business Centre, close to Upper Upnor?

Yes. Estates, retail parks and business parks around Upper Upnor, Castle View Business Centre among them, are all within reach. A few photos and the unit address let us price the work.

Can being near the sea in Upper Upnor affect the sealant we need?

It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.

How much does the work cost?

Every job gets its own fixed quote. For yours, ring 01277 525 020 or email drawings and photos with a description of the work.

Are you CHAS accredited?

Yes. We are CHAS accredited and a Constructionline member, which helps with supplier vetting.

Can you work to our specification?

Yes. Send it with your enquiry, and we’ll price the work to it.

Are you insured?

Yes. We are fully insured, including public liability cover.

Can one quote cover more than one building?

Yes. Several buildings can share a single quote, with one point of contact.

When to bring in a specialist

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

How a job runs

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before we move to the next. For work around Upper Upnor, we aim to finish in one visit, so photos and measurements up front really help. Then the right materials arrive with us.

  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. Failed beads are removed in full.
  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. We go over the completed work with you before leaving.

Before we start on site

  • Share your working hours and any access restrictions
  • Have the specification and drawings to hand
  • Make sure the joints can be reached

Getting a fixed quote

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Ask for a quote

Related advice

Aftercare for building managers

To get the most from the new sealant:

  • Record the product and colour used on each elevation
  • Check the asbestos register before old mastic is disturbed
  • Brief window cleaners about newly sealed joints
  • Clear debris that holds water against joints

Include facade joints in your planned maintenance inspections. Signs to look for are cracking, edges lifting, chalking and stiffness.

Deal with sections that fail early as soon as they show. A few metres resealed promptly can stop water damage spreading inside the building.

Building and refurbishing in Upper Upnor

With the shore within about 2 miles, Upper Upnor counts as a coastal location. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. Upper Upnor is in the South East, one of the UK’s drier regions. Winter mornings still bring frost and condensation on frames and panels, so external mastic is timed for workable conditions and agreed with the site manager.

Units on estates such as Castle View Business Centre (to the south-west of Upper Upnor) tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal. Further education sites such as MidKent College Gillingham Campus, 1.2 miles to the south-east of Upper Upnor, are extended and refurbished from time to time, with mastic often programmed into the summer break.

Upper Upnor is about 2 miles north-east of Rochester, in Medway. Commercial clients in Upper Upnor use us for work on facade joints. Upper Upnor is one of 54 places in Medway on our list for facade joints. Sites around London have their own page, roughly 27 miles from Upper Upnor.

Work on facade joints is covered throughout ME2. Streets here include High Street, Upnor Road and Castle Street, and sites on any of them can send details for a fixed quote. We also cover Lower Upnor (1 mile north-east), Wainscott (1 mile north-west), Chattenden (1 mile north), Hoo St Werburgh (2 miles north-east) and Cooling Street (3 miles north) for facade joints. Further afield, our area takes in Gillingham (3 miles south-east), Chatham (3 miles south), Rainham (5 miles south-east), Luton (3 miles south), Park Wood (5 miles south-east) and Lordswood (5 miles south).

Around Upper Upnor

Locally, jobs take us to sites close to The Kings Arms, Lower Lines Park and Waterfront University Technical College. You will also find Former Ordnance Store At Chatham Gun Wharf (1.4 miles south) and Waterfront UTC (1.3 miles south-east). Upper Upnor’s nearest station is Strood station, roughly 1.2 miles south-west. Other landmarks nearby include French Hospital (1.5 miles south-west) and Pentagon Shopping Centre (1.6 miles south). The countryside around Upper Upnor includes Gad's Hill and Rede Common.

Map of Upper Upnor © OpenStreetMap contributors
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