Kent · England
Window & door mastic in Shoreham, Kent
Window mastic for Shoreham, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Rushed sealant from a window installation
- Cracked sealant at the sill ends
- White mastic on grey or black frames
What affects the cost of window mastic
We quote each job individually. This is what makes a difference:
- The type of sealant required
- How easy the joints are to reach
- The old material and how stubborn it is
- Whether there’s mould to deal with
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email and we will talk you through it.
What we need to know
When you contact us, it’s useful to know:
- Roughly how big the job is
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Window mastic for homes and businesses in Shoreham
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty. If the draught is through the window seals instead, we will tell you. We work on patio & French doors, timber windows & doors and composite doors, and people most often call us about whistling draughts around closed windows and white mastic on grey or black frames.
Outdoor sealant needs dry, clean surfaces, so work on frames around Shoreham is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Shoreham (TN14)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
The work is quick compared with the damage it prevents: the visit takes a morning for a couple of windows and a door. Leave it until water is coming in and you may need plastering and decorating as well. Where a wall is exposed, as many are in small places like Shoreham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Shoreham
- Old sealant always removed completely
- 12-month guarantee on every job
- Rated 4.9 stars on Google
- White, clear, grey or coloured to suit, where the product allows
Read our cost guide and customer reviews.
Shoreham: your questions answered
Can you do window mastic in Shoreham?
Yes. Our work covers London and the South East, and Shoreham is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
Do you work for landlords with property near Shoreham (Kent) station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Can you do the inside joint as well?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can I paint over the new sealant?
Most silicone cannot be painted. Let us know beforehand, and we’ll use a paintable product where it suits.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Different surfaces, different methods
Patio & French doors
Door frames take knocks and movement every time the doors are used. A flexible sealant copes with that, where a rigid one would crack.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Shoreham, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
Getting a quote
For window mastic in Shoreham, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Advice
Landlords, agents and businesses in Shoreham
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Housing providers, facilities teams and property managers book us too in Shoreham and across Kent. We can quote a run of properties together, and we are fully insured for the work.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Shoreham homes and the weather
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Lullingstone Castle (about 1.8 miles north-east) are a reminder that the area around Shoreham has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as Shoreham Village School, the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as Church of St Peter and St Paul, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you let a flat or house near Shoreham (Kent) station, renewing tired window mastic between tenants heads off draught and damp complaints.
Shoreham is about 4 miles north of Sevenoaks, in Kent. Homes, rented property, offices and hotels in Shoreham is covered for window mastic. The work is guaranteed for a year. Our Kent coverage runs to 922 places, and Shoreham is one of them. For nearby work, see our London page.
All of TN14 is covered for window mastic, from the main roads to the quietest streets. Local streets include High Street, Boakes Meadow and Church Street. If you are just outside Shoreham, we cover Badgers Mount (1 mile west), Sepham Heath (1 mile south-west), Twitton (1 mile south), Otford (2 miles south) and Lullingstone (2 miles north). Within a short drive, we also cover Dartford (8 miles north), Sevenoaks (4 miles south), Royal Tunbridge Wells (14 miles south), Gravesend (11 miles north-east), Tonbridge (10 miles south-east) and Northfleet (10 miles north-east).
Local landmarks in Shoreham
Around Shoreham, our work takes us to homes and buildings near Raspberry Hall Park and The Old George Inn and the streets around them. There’s a railway station in Shoreham itself: Shoreham (Kent) station. Other landmarks nearby include Sevenoaks Hospital (3.2 miles south) and Otford Heritage Centre (1.9 miles south). Green spaces nearby include Dryhill Nature Reserve.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Make sure the drainage slots are not blocked
- Avoid blasting the frames with a pressure washer
- Ventilate rooms so frames don’t stay wet inside
- Check the mastic once a year
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.