Kent · England
Upchurch Window Mastic
Our applicators work in Upchurch on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
- Black, perished sealant on frames
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Window mastic in Upchurch, done properly
Colour matters on a frame. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. We work on composite doors, timber windows & doors and uPVC windows, and common reasons people get in touch are rushed sealant from a window installation and hard, cracked sealant around windows.
In a village or hamlet like Upchurch, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Our work is backed for twelve months, in Upchurch and everywhere else we cover.
- Location
- Upchurch (ME9, ME8)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Walk round the house once a year and look at the joints
- Keep paint and stain on wooden frames in good order
- Don’t aim a pressure washer at the joints
- Ventilate rooms so frames do not stay wet inside
Try not to touch the new joint while it cures, for as long as we advise. Do not point a pressure washer at the joints.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
Surface by surface
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Patio & French doors
Water at the foot of a door frame is not always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
Window mastic in Upchurch: local notes
Upchurch is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Holywell Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Rainham (Kent) station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. In the older streets around Church of St Mary the Virgin, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Upchurch is about 3 miles east of Gillingham, in Kent. From the centre of Upchurch to the outskirts, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Upchurch is one of 922 towns and villages in Kent we cover. For nearby work, see our Chelmsford page (26 miles or so).
Every address in ME9 and ME8 is covered for window mastic. Streets in the area include The Street, Crosier Court and Horsham Lane, all of which we cover. We also cover the places around Upchurch: Lower Halstow (1 mile east), Breach (1 mile south), Moor Street (1 mile south-west), Lower Rainham (1 mile west) and Newington (2 miles south-east). Further out, we also cover Maidstone (9 miles south-west), Sittingbourne (4 miles south-east), Gravesend (12 miles west), Faversham (11 miles east), Northfleet (14 miles west) and Minster (7 miles north-east).
What’s near Upchurch
We work in homes and buildings around Leigh Academy Rainham and Berengrave Chalk Pit, among other places. The nearest railway station is Rainham (Kent) station, about 1.6 miles south-west. Nearby you will also find Medway Maritime Hospital (4.5 miles west) and Bayford Court (4.8 miles south-east). Open spaces near Upchurch include Bishop Saltings.
Your questions about window mastic in Upchurch
Do you work for landlords with property near Rainham (Kent) station?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Does living near the coast affect window mastic in Upchurch?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Do you have sealant for grey or black windows?
Yes, in most cases. Tell us the frame colour when you get in touch and we will use the nearest match.
Can resealing stop a draught around my window?
It will if the frame joint is the problem. We check where the draught is before any work starts.
What information do you need?
Let us know what needs doing and where, with pictures by email if possible. We’ll ask anything else we need to know.
Is the new sealant paintable?
Silicone generally will not take paint. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
Can you seal the gap between the frame and the plaster indoors?
Yes. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
Nearby places to Upchurch
Also in Upchurch
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes anything from an hour or two to a full day, depending on how many frames there are. Somewhere like Upchurch needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
- Clear the area around the work
Get a quote
Need a quote? Please call 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
Advice
When it is not the sealant
New sealant cannot fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A frame that has rotted at the joint
- Damp problems in the wall away from the window
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Timber windows & doors
What affects the cost of window mastic
Call for a quick quote. The main things that affect it are:
- When we can work, for business premises
- The size of the job
- Any mould that needs treating
- The type of sealant required
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and send you a clear quote before work begins.
Helping us quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- Any access issues, like height or stairs
- Photos by email, if that’s easy
- The rough size of the job
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Why it’s worth doing now in Upchurch
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that is needed. If we find failed glass units or worn seals, we will tell you. In a small place like Upchurch, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or email us.
Why book with us
- Tidy, careful work
- Colour picked to suit the job
- More than 20 years in sealant work
- Fully insured
Read our cost guide or our reviews.