West Sussex · England
East Marden Window Mastic
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in East Marden. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Cracked sealant at the sill ends
- Draughts coming in around windows and doors
- Black, perished sealant on frames
Common problems we fix in East Marden
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
Look out for any of the following:
- Draughty joints inside around the window
- Black, perished sealant on frames
- Damp patches on the reveal after heavy rain
- Sealant in the wrong colour for the frame
In and around East Marden, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- Whether they seal over old material or remove it
- What the cure time is
- Whether the sealant suits the joint
- What happens if they find a problem under the old sealant
Window mastic in East Marden, done properly
Around East Marden we seal all kinds of frames: uPVC, aluminium, timber and composite, plus 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 has split away from the wall and draughty joints inside around the window, we can put it right.
Around East Marden, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Every job is covered by a 12-month guarantee.
- Location
- East Marden (PO18)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
The process
There is not much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a morning for a couple of windows and a door from start to finish. Somewhere like East Marden needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Getting ready for the visit
- Tell us about any water getting in
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
Read more
What affects the quote in East Marden
Call for a quick quote. What matters most is:
- How many areas need sealing
- How easy the joints are to reach
- Mould in or behind the old joints
- When we can work, for business premises
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
If you are in East Marden and need window mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before we start.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Do not paint over the silicone
- Wash the frames with mild soapy water
- Wipe condensation off the frames
- Keep paint and stain on wooden frames in good order
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early.
Leaks generally show up in wet, windy weather, 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.
Window mastic in East Marden: local notes
Historic houses like Uppark (about 2.6 miles north-west) are a reminder that the area around East Marden has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to Church of St Peter include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
East Marden is about 6 miles north-east of Emsworth, in West Sussex. If you need window mastic in East Marden, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover West Sussex from our Crawley base, East Marden included. Across West Sussex, we cover 371 places, East Marden among them. We also work in Portsmouth, around 13 miles away.
Postcode districts we cover here for window mastic: PO18. We also cover the places around East Marden: Compton (2 miles west), Chilgrove (2 miles east), Didling (3 miles north-east), Elsted (3 miles north) and East Harting (3 miles north). Within a short drive, we also cover Bognor Regis (12 miles south-east), Chichester (7 miles south-east), Selsey (14 miles south), Emsworth (6 miles south-west), Portfield (7 miles south-east) and Yapton (13 miles south-east).
Around East Marden
Nearby you’ll also find Museum of Gardening (3.6 miles east). The countryside around East Marden includes Bow Hill and Kingley Vale National Nature Reserve.
What we cannot put right
It helps to know what we can’t do too:
- Condensation trapped between the panes
- A sash or casement that won’t close properly
- Worn gaskets, brush seals or a door that has dropped
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Where we work in East Marden
- uPVC windows
- Patio & French doors
- Timber windows & doors
- Composite doors
- Aluminium frames
- Window sills
Why deal with it now?
A quick bead over the top of old mastic looks like an easy fix, but it will not grip old, dirty sealant. It soon lifts and the leak carries on behind it. The old mastic has to come out. Where a wall is exposed, as many are in small places like East Marden, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why book with us
- Anti-fungal silicone where joints get wet
- Over 20 years’ experience
- 180+ five-star Google reviews
- We agree the colour with you first
Read our cost guide or customer reviews.
Places near East Marden
Also in East Marden
East Marden questions
Will you come out to East Marden?
Yes, East Marden is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
What guarantee comes with window mastic in East Marden?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
What should I tell you?
Tell us what needs doing and where. If we need more, we will ask.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
Where do you work from?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
Is the new sealant paintable?
Not if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.