West Sussex · England
Window Mastic in Eastergate
Window mastic across Eastergate and nearby, with old sealant always removed completely and a 12-month guarantee.
- Mastic that has split away from the wall
- Whistling draughts around closed windows
- Leaking joints at the ends of sills
Window mastic in Eastergate, done properly
There are two joints on most windows. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. Either or both can be done. Common call-outs are for sealant in the wrong colour for the frame and gaps between the frame and the inside reveal, on uPVC windows, timber windows & doors and aluminium frames.
Somewhere as small as Eastergate, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Location
- Eastergate (PO20)
- Region
- West Sussex
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Eastergate
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, and it lets go sooner than it should.
Keep an eye out for any of the following:
- Hard, cracked sealant around windows
- Draughty joints inside around the window
- Old mastic that has gone black or come away
- Leaking joints at the ends of sills
If you let a flat or house near Barnham station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before booking
- What happens if they find a problem under the old sealant
- Are they insured?
- What the quote includes, VAT included or not
- Whether you can choose the colour
How to look after the new joints
After the cure time, these simple habits help:
- Keep drainage slots and sill grooves clear
- Wash the frames with mild soapy water
- Avoid blasting the frames with a pressure washer
- Walk round the house once a year and look at the joints
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t 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.
Towns and villages near Eastergate
More services for Eastergate
How it works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take a morning for a couple of windows and a door. For a village or hamlet like Eastergate, the journey is planned in advance: let us know about lanes, gates and parking. 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.
- Where the gap is deep, backing rod goes in first.
- 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
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we are working on
- Mention any leaks or damp you’ve noticed
How to get a quote
If you’re in Eastergate and need window mastic, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Advice
Why act early in Eastergate
The work is quick compared with the damage it prevents: it takes most of a day for a typical house, less for a few frames. Wait for damp to appear and there may be plaster and decorating to sort out too. Around Eastergate, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What you pay reflects the work, not guesswork. That is why we ask about the job first and send you a clear quote before any work starts.
Why choose Mr Mastic in Eastergate
- Trusted Arbo and Everbuild sealants
- Sanitary silicone with an anti-fungal additive in wet areas
- Approved under the ARBOMaster scheme
- Fully insured
Read what affects the cost and customer reviews.
Questions from Eastergate
Is Eastergate within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Barnham station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Can you do upstairs windows?
Yes, where it’s safe. For high or awkward windows, we’ll tell you what access is needed.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
How many windows can you do in a day?
A few frames take a few hours, while a whole house takes longer. We confirm the timing with your quote.
How do I get a quote for window mastic in Eastergate?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
When it is not the sealant
In fairness, some problems need a different trade:
- Draughts through the window seals rather than the frame
- Damp coming through the wall itself rather than the frame joint
- Condensation trapped between the panes
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer before booking.
Joints and surfaces we work on
- Timber windows & doors
- Patio & French doors
- Composite doors
- Aluminium frames
- uPVC windows
- Window sills
How the job changes by surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Composite doors
An exposed front door gets wind-driven rain, and the top and bottom corners tend to fail first. Those corners get the most care.
How we quote for window mastic
Call for a quick quote. What matters most is:
- The number and length of the joints
- How many rooms, windows or areas are involved
- Access and height
- The type of sealant required
Doing several joints on one visit is usually more efficient than separate visits. We’ll send you a clear quote for the lot.
What to tell us for a quote
To make quoting easier, let us know:
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- The type of property
- Where the job is, and your postcode
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
What window mastic looks like in Eastergate
Historic houses like Goodwood House (about 4.2 miles north-west) are a reminder that the area around Eastergate 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. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around St George's Church, the joint between an old wall and a newer frame is usually the first place rain gets in. Managing a site like Eastergate CofE Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Eastergate is about 4 miles north of Bognor Regis, in West Sussex. From the centre of Eastergate to the outskirts, window mastic is available for homes and businesses alike. Our area takes in 371 places across West Sussex, from the larger towns to small villages. You can also see our page for Portsmouth, about 19 miles away.
Work in PO20 works the same way as everywhere else we cover. Window mastic is available to properties on St Georges Walk, Highview Road and Critchmere Drive. If you are just outside Eastergate, we cover Westergate (1 mile west), Nyton (1 mile west), West Barnham (1 mile south-east), Fontwell (1 mile north) and Barnham (1 mile south-east). Larger places within reach include Worthing (11 miles east), Bognor Regis (4 miles south), Chichester (5 miles west), Selsey (9 miles south-west), Littlehampton (6 miles east) and Lancing (15 miles east).
Near you in Eastergate
In Eastergate, that means homes and buildings near Ormiston Six Villages Academy and the streets around them. Eastergate’s nearest station is Barnham station, roughly 1 mile south-east of the centre. Well-known places in the area include Bognor Regis War Memorial Hospital (3.4 miles south) and Tote Copse Castle (1.5 miles west). Green spaces nearby include WWT Arundel.