West Sussex · England
Itchingfield Window Mastic
Professional window mastic in and around Itchingfield, with every bit of old sealant taken out first and a 12-month guarantee.
- Cold air getting in at the frame edge
- Gaps left after new windows were fitted
- Draughty joints inside around the window
Window mastic in Itchingfield, done properly
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you have old mastic that has gone black or come away and gaps left after new windows were fitted, we can put it right, on uPVC windows, composite doors and patio & French doors alike.
Homes in small places like Itchingfield often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
All of our work is guaranteed for twelve months, in Itchingfield and everywhere else we cover.
- Place
- Itchingfield (RH13)
- Region
- West Sussex
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How the visit works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It usually takes a few hours for a handful of frames, longer for a whole house. In a small place like Itchingfield, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
- Let us know about earlier repairs to the joints
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Advice
Why deal with it now?
The work is quick compared with the damage it prevents: it takes a few hours for a handful of frames, longer for a whole house. Wait for damp to appear and there may be plaster and decorating to sort out too. Older cottages and farmhouses around Itchingfield can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why us?
- Sealant colour chosen to suit
- Trusted Arbo and Everbuild sealants
- Old sealant always removed completely
- Approved under the ARBOMaster scheme
What window mastic looks like in Itchingfield
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as The Parish Church of St Nicolas, the joint between an old wall and a newer frame is generally the first place rain gets in. Rented homes near Christs Hospital station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Barns Green Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Itchingfield is about 4 miles west of Horsham, in West Sussex. Itchingfield gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Itchingfield is one of 371 towns and villages in West Sussex where we work. You can also see our page for Crawley, about 10 miles away.
Jobs for window mastic in RH13 is quoted and booked the same way as anywhere else. Whether your property is on Bashurst Hill, Five Oaks Road and Bashurst Copse or a nearby road, our applicators can take on the job. Close by, we work in Barns Green (1 mile south), Broadbridge Heath (2 miles north-east), Brooks Green (2 miles south), Tower Hill (2 miles east) and Southwater (3 miles south-east). Larger places within reach include Crawley (10 miles north-east), Horsham (4 miles east), Haywards Heath (14 miles east), Burgess Hill (13 miles south-east), Broadfield (9 miles east) and Storrington (9 miles south).
Landmarks near Itchingfield
We work in homes and buildings around Tanbridge House School and the streets around them. The closest station to Itchingfield is Christs Hospital station, roughly 1.5 miles east of the centre. A little further out are Christs Hospital School Museum (1.6 miles east) and Horsham Hospital (3.5 miles north-east). For a walk, there’s Warnham LNR.
Also near Itchingfield
Other services in Itchingfield
Questions from Itchingfield
Can you help a landlord with a rental near Christs Hospital station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Do you cover smaller places like Itchingfield?
Yes. Itchingfield is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can new window sealant be painted?
It depends on the sealant. Silicone is not paintable, but some hybrid sealants are. Mention any painting plans before we start.
Will new mastic stop draughts?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Don’t aim a pressure washer at the joints
- Use gentle cleaners on frames and sealant
- Keep timber frames painted
- Keep paint off silicone joints
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just ring 0345 464 0079 or send us an email.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Damp coming through the wall itself rather than the frame joint
- Broken hinges, locks or handles
- A door that needs adjusting, rehanging or new seals
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Patio & French doors
- Composite doors
- Timber windows & doors
- Aluminium frames
- uPVC windows
- Window sills
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Quotes for window mastic in Itchingfield
You’ll get a clear quote before work begins. It’s based on:
- The number and length of the joints
- When we can work, for business premises
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- How we’d reach the joints
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it’s a home or a business
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or email us and describe the job and send photos if you have them.
How the job changes by surface
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. The paint or stain needs to be sound where the sealant meets it.