West Sussex · England
Waterbeach Window Mastic
Mastic around window and door frames, sills and patio doors in Waterbeach, with a one-year guarantee on every job. Ask us for a quote.
- Whistling draughts around closed windows
- Old mastic that has gone black or come away
- Water coming in at the bottom corners of a door
Leave it or put it right?
Running fresh sealant over the old joint is tempting, but it will not grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. Around Waterbeach, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why choose Mr Mastic in Waterbeach
- We are fully insured
- An ARBOMaster approved applicator
- Arbo and Everbuild products
- Domestic, commercial and hotel work
About our window mastic in Waterbeach
Homes in Waterbeach have every kind of window: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. If you’re dealing with mastic that’s falling out in pieces and whistling draughts around closed windows, we can help, on uPVC windows, timber windows & doors and patio & French doors alike.
Mastic can only go onto a dry, clean joint, so window work in Waterbeach is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes as standard.
- Where
- Waterbeach (PO18)
- Region
- West Sussex
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
For anyone letting property in or around Waterbeach, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Also near Waterbeach
Other services in Waterbeach
What affects the cost of window mastic
You’ll get a clear quote before any work starts. It’s based on:
- Any mould that needs treating
- The type of sealant required
- Access and height
- The number of rooms or windows
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
What we need to know
What to tell us when you ask for a quote:
- Where the job is, and your postcode
- Whether it has been sealed before
- The problem you’ve noticed
- How we’d reach the joints
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Common questions in Waterbeach
Is Waterbeach within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Chichester station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
How many windows can you do in a day?
That depends on the number of frames, how they’re reached and the state of the old mastic. You’ll know the timing when we quote.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Can you do the inside joint as well?
Yes, we do both. Inside, the joint between frame and plaster is sealed neatly.
Is the work guaranteed?
Yes. Our one-year guarantee covers every job, inside or out.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
What we do, step by step
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from an hour or two to a full day, depending on how many frames there are. In a small place like Waterbeach, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Let us know if you’ve seen damp or leaks
Get a quote
Want a quote for window mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before we start.
Advice
When it is not the sealant
Sealant is not the answer to every problem, and we’ll tell you before work begins. It will not solve:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Draughts through the window seals rather than the frame
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
What we seal
- Aluminium frames
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Window sills
- Composite doors
Windows and doors in Waterbeach
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Goodwood House (about 0.5 miles north-west) nearby, there’s older building stock in the area around Waterbeach as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around The Priory Church of St Mary and St Blaize, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you let a flat or house near Chichester station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. For site and facilities teams at buildings such as Boxgrove CofE Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Waterbeach is about 3 miles north-east of Chichester, in West Sussex. Our applicators cover window mastic for homeowners, landlords and businesses in Waterbeach and the surrounding area, as part of our work across West Sussex. Across West Sussex, we cover 371 places, and Waterbeach is one of them. For nearby work, see our Portsmouth page.
We cover every part of PO18 for window mastic. Other places close to Waterbeach include Strettington (1 mile south), Westerton (1 mile south-west), Halnaker (1 mile east), Boxgrove (1 mile south-east) and Maudlin (1 mile south). Larger places within reach include Worthing (15 miles east), Bognor Regis (6 miles south), Chichester (3 miles south-west), Selsey (9 miles south), Littlehampton (10 miles south-east) and Emsworth (9 miles west).
Landmarks near Waterbeach
For rail, the closest station is Chichester station, roughly 3.2 miles south-west of the centre. A little further out are Chichester Castle (2.6 miles south-west) and The Chichester City Museum (2.7 miles south-west). Not far away are Levin Down and Kingley Vale National Nature Reserve.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Ventilate rooms so frames do not stay wet inside
- Keep solvents and bleach off the sealant
- Keep paint and stain on wooden frames in good order
- Avoid blasting the frames with a pressure washer
Try not to touch the new joint while it cures, following the cure time we give you. Keep jet washers away from the frames.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.