Mastic Sealing in Northdown
Mastic sealing for building owners, managing agents and housing associations in Northdown. CHAS accredited and fully insured, with a 12-month guarantee.
- Failed external movement joints
- Patchy repairs in mismatched sealant
- Repeated reactive repairs to the same buildings
Mastic sealing near Northdown
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Our process
Occupied buildings need a little choreography. We sign and contain the area we are in, keep walkways clear and move on in phases so staff and visitors can carry on around us. For a job in Northdown, the main thing is a clear picture of the work. A fixed quote follows.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- Joints are resealed and tooled.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- Tell us your opening times and when work is allowed
- Point out any areas we must not close
- Flag any permit to work we will need
Get a fixed quote
For a fixed quote, ring 01277 525 020 or send photos by email with the site address and an outline of the work. Our quote form is another easy route.
Advice
Mastic sealing in Northdown
Our clients include managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios. A planned, building-by-building programme often works better than reacting to each complaint, with each block quoted and scheduled in turn. If you have worn sealant at communal door frames and draught complaints from residents or tenants, we can help. Searching for sealant specialists in Northdown? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
In a smaller place such as Northdown, landlords and agents tend to look after small blocks, flats over shops, sheltered housing and commercial units. The mastic around their frames and external joints ages like anywhere else.
The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Location
- Northdown (CT9, CT10)
- Wider area
- Kent
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Common questions from Northdown clients
Can you work in a care home near Northdown with residents in?
Yes. Care settings are planned area by area, at times agreed with the home. Any site rules, from signing in to infection control, are agreed before we start.
Can you work at a site such as Copper Leaf Business Park, by Northdown?
Yes. Our area takes in Northdown and its surroundings, with estates and business parks such as Copper Leaf Business Park included. Send details of the unit and the work through our quote form for a quick quote.
Will you quote for a small job?
We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.
How long before the joints can be used?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.
How do I request a quote?
It works in four steps: send details, get a quote, we seal, guaranteed. The first step only needs photographs and a postcode.
Which sealant will you use?
A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
What about access for upper-floor joints?
Access is discussed and agreed before the quote is fixed. Tell us the building height and any access already in place and we will confirm the approach in the quote.
Why deal with it now?
Failed perimeter mastic lets cold air in around frames, and they often blame the windows. Resealing the perimeters is often the simpler fix when the frames themselves are sound. Small buildings around Northdown suffer from failed joints as much as large ones. Catching it early means a reseal rather than repairs.
A quote for mastic joints depends on how many there are, their condition and the access, and any specification that applies. Ask us for a fixed quote.
Why choose Mastic Doctor in Northdown
- 12 months’ guarantee on every job
- Fully insured, including public liability cover
- Colour agreed before work starts
- One contact handling all your sites
Doing it in-house
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.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Looking after buildings in and around Northdown
With the shore within about 1 mile, Northdown counts as a coastal location. On buildings near the shore, the side facing the weather usually needs its mastic renewed first, and they deserve more regular inspection. Northdown is about 66 miles from central London. Managed blocks of flats are a big part of commuter-belt property, and window and balcony mastic on them tends to age at the same rate.
Property owners at sites such as Copper Leaf Business Park (1 mile south of Northdown) can have mastic renewed between lettings. Blocks of flats and mixed-use buildings often cluster around stations such as Broadstairs station, 1.8 miles to the south of Northdown, and their window and balcony mastic tends to age at the same rate across a building.
Northdown is about 2 miles east of Margate, in Kent. Any commercial site in Northdown is covered, whether it’s a single job or part of a planned programme. 931 places across Kent fall within our area, including Northdown. There’s a separate page for London, roughly 66 miles from Northdown.
If you need mastic sealing in CT9 and CT10, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. If your site is on Old Road, Holly Lane and Green Lane or close by, send details and we will quote for mastic joints. Nearby places we also cover include Palm Bay (1 mile north-west), Cliftonville (1 mile west), Kingsgate (1 mile east), St Peter's (1 mile south) and Broadstairs (2 miles south). Bigger towns within reach include Ramsgate (3 miles south), Deal (12 miles south), Herne Bay (12 miles west), Walmer (13 miles south), St Lawrence (3 miles south) and Newington (3 miles south-west).
Near you in Northdown
Around Northdown, our work takes us to commercial buildings near Captain Digby Inn and Dane Court Grammar School. Northdown’s nearest station is Broadstairs station, about 1.8 miles south of the centre. A little further out are Westwood Cross (2.1 miles south-west) and Queen Elizabeth the Queen Mother Hospital (1.4 miles south-west).
Signs you need mastic sealing in Northdown
Poor preparation explains many failed joints. Where the faces weren’t cleaned or primed as specified it comes away from one face.
It’s worth sending us details if you spot any of the following:
- A mix of products and colours from past repairs
- Cracked, hardened mastic round windows on a block
- Repeated reactive repairs to the same buildings
- Movement joints with sealant missing
If your remit includes a building such as Palm Bay Primary School, frame and door mastic can be programmed for the holidays.
Questions to ask before you book
- Will CSCS-carded applicators be on site?
- How the joint faces will be prepared and primed
- What level of public liability insurance do they hold?
- Will RAMS and insurance details be available?
Maintenance after handover
After handover, a little attention goes a long way:
- Make it easy for occupiers to report draughts
- Keep a record of when each building was resealed
- Look at the sunniest and most exposed elevations first
- Avoid piecemeal callouts where you can
If a joint we sealed fails within 12 months, tell us and we’ll look at it. Beyond that, routine checks spot the next round of repairs.
Leaks at window perimeters spoil finishes and can affect frames. Resealing early keeps the job small.
Towns and villages near Northdown
Also in Northdown
Honest limits
Sealant solves a lot, but not everything, and we’re upfront when that’s the case. These need a different solution:
- Water coming in from the roof or rainwater goods
- Misted or failed double-glazed units
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
If in doubt, call 01277 525 020 or email us and we will say what we think before you book.
Joints and surfaces we work on
- Shopfronts below residential blocks
- Window and door perimeters on blocks
- Communal entrances and stairwells
- External wall and movement joints
- Balcony and threshold joints
- Communal kitchens and washrooms