West Sussex · England
Window & door mastic in West Marden, West Sussex
Our applicators work in West Marden on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Leaking joints at the ends of sills
- Hard, cracked sealant around windows
- Rain getting in at the frame or under the sill
Looking after it afterwards
Looking after new joints is easy:
- Keep jet washers away from the mastic
- Keep paint off silicone joints
- Walk round the house once a year and look at the joints
- Don’t use solvent cleaners on the joint
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
Window mastic in West Marden, done properly
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. Common call-outs are for cracked sealant at the sill ends and black, perished sealant on frames, across patio & French doors, timber windows & doors and uPVC windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around West Marden is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Where
- West Marden (PO18)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
All our tools and materials come with us in the van. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours for a few frames, or a day or more for a whole house. Somewhere as small as West Marden, access is often the only tricky part. 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.
- 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.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Keep pets and children clear of the area while we work
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
Get a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.
Advice
Also near West Marden
Also in West Marden
How the job changes by surface
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so we pay close attention there.
Composite doors
Draughts round the door leaf generally come from worn seals or adjustment, not the mastic. We seal the frame and let you know about anything else.
Quotes for window mastic in West Marden
Call for a quick quote. The main things that affect it are:
- Working hours on commercial sites
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- Access and height
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
What we need to know
What to tell us when you ask for a quote:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
- Photos by email, if that is easy
- Whether it’s a home or a business
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear price before any work starts.
West Marden: your questions answered
Do you cover West Marden for window mastic?
Yes. We work across London and the South East, and West Marden is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Do you cover smaller places like West Marden?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Do you work for landlords and businesses?
Yes. Domestic, commercial and hotel work are all part of what we do, and we are fully insured.
Do you have sealant for grey or black windows?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
What window mastic looks like in West Marden
Historic houses like Uppark (about 2.6 miles north) are a reminder that the area around West 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as The Parish Church of St Mary, the joint between an old wall and a newer frame is normally the first place rain gets in. Rented homes near Rowlands Castle station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
West Marden is about 5 miles east of Horndean, in West Sussex. Whether you are in the middle of West Marden or further out, window mastic is available for homes and businesses alike. West Marden is one of 371 towns and villages in West Sussex where we work for window mastic. Our Portsmouth page covers work nearby.
All of PO18 is within our area for window mastic, from the main roads to the quietest streets. Nearby, we also carry out window mastic in Forestside (1 mile south-west), Chalton (3 miles north-west), Blendworth (4 miles west), Buriton (5 miles north-west) and Nursted (5 miles north). Further out, we also cover Bognor Regis (13 miles south-east), Chichester (8 miles south-east), Selsey (14 miles south), Emsworth (5 miles south), Portfield (8 miles south-east) and Yapton (14 miles south-east).
Around West Marden
In West Marden, that means homes and buildings near The Coach And Horses Public House and the streets around them. For rail, the closest station is Rowlands Castle station, about 2.8 miles south-west. A little further out are Havant War Memorial Hospital (5.6 miles south-west) and Clanfield Earthwork (4.1 miles north-west). The countryside around West Marden includes Kingley Vale National Nature Reserve and Compton Down.
Why act early in West Marden
Choosing the product is half the job. Interior caulk and bathroom silicone are not made for exterior frame joints. An exterior, low-modulus sealant stays flexible in sun and frost. Around West Marden, 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 each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Why us?
- 4.9 on Google from 180+ five-star reviews
- Anti-fungal silicone where joints get wet
- We leave the area clean and tidy
- More than 20 years in sealant work
Read our cost guide or what customers say.
Common problems we fix in West Marden
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
Signs it’s time to call us include:
- Sealant in the wrong colour for the frame
- Hard, cracked sealant around windows
- Untidy mastic left by window fitters
- Gaps between the frame and the inside reveal
Schools such as Compton and Up Marden CofE Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- When the joint can take water or movement
- What guarantee comes with the work
- Which sealant they’ll use, and why
- What happens if the job turns out different
Honest limits
A few problems are outside what sealant work can do:
- A failed sealed unit that has misted up
- Soft or decayed wood in the frame
- Damp coming through the wall itself rather than the frame joint
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Composite doors
- Timber windows & doors
- Window sills
- uPVC windows
- Aluminium frames
- Patio & French doors