West Sussex · England
Felcourt Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Felcourt and across West Sussex. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Mastic that is falling out in pieces
- Cracked sealant at the sill ends
- Hard, cracked sealant around windows
Window mastic in Felcourt
Behind a thin line of old mastic there’s sometimes a deep void. Packing it solid with sealant gives a joint that can’t flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. We work on aluminium frames, patio & French doors and window sills, and people most often call us about rain getting in at the frame or under the sill and gaps between the frame and the inside reveal.
Somewhere as small as Felcourt, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
You get a one-year guarantee, the same in Felcourt as everywhere else we work.
- Location
- Felcourt (RH19, RH7)
- Region
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- A door that needs adjusting, rehanging or new seals
- Faulty window hardware
- Misting between the panes of a double-glazed unit (that needs a new unit)
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Where we work in Felcourt
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Composite doors
- Patio & French doors
- Window sills
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Felcourt, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
Getting a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
Related advice
FAQs for Felcourt
Is Felcourt within the area you cover?
Yes, Felcourt is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Felcourt for window mastic?
Yes, Felcourt is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
Can you seal over the old sealant?
No. The old sealant always comes out first.
Can you do upstairs windows?
Yes, if safe access is possible. For high or awkward windows, we’ll tell you what access is needed.
Can resealing stop a draught around my window?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that is a different fix, and we will say so.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
For landlords and businesses
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Places near Felcourt
Also in Felcourt
How the job changes by surface
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We will tell you which suits your home.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Felcourt homes and the weather
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. Historic houses like Saint Hill Manor (about 3.7 miles south) are a reminder that the area around Felcourt has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Schools such as Bush Davies School of Theatre Arts are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Historic houses such as Saint Hill Manor, about 3.7 miles south, show how far back building around Felcourt goes. If you let a flat or house near Dormans station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Felcourt is about 2 miles north of East Grinstead, in West Sussex. If you need window mastic in Felcourt, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover West Sussex from our Crawley base, Felcourt included. Across West Sussex, we cover 371 places, and Felcourt is one of them. Our Crawley page covers work nearby (8 miles or so).
We work across the RH19 and RH7 postcode area for window mastic. You’ll find streets such as Felcourt Lane, Felcourt Road and Blackberry Road, all of which we cover. We also cover Dormans Park (1 mile south-east), Newchapel (1 mile west), Lingfield (1 mile north), Dormansland (1 mile east) and Felbridge (2 miles south-west). Further out, we also cover Crawley (8 miles south-west), Horsham (14 miles south-west), Haywards Heath (12 miles south), Burgess Hill (15 miles south), Broadfield (9 miles south-west) and Bewbush (9 miles south-west).
Near you in Felcourt
We work in homes and buildings around Centenary Fields and Imberhorne School. For rail, the closest station is Dormans station, roughly 0.8 miles east of the centre. Well-known places in the area include Queen Victoria Hospital (1.9 miles south-east) and East Grinstead Museum (2.5 miles south). For a walk, there’s Hedgecourt Lake.
What affects the quote in Felcourt
Jobs vary more than people expect. The main factors:
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Which sealant suits the joint
What you pay reflects the work, not guesswork. That’s why we ask about the job first and agree the price before starting.
Asking for a quote
To help us quote quickly, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
For window mastic in Felcourt, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
What happens if it’s left?
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. Proper resealing starts with removing the old joint. Older cottages and farmhouses around Felcourt can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint usually makes the job bigger, not smaller. If you are unsure, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why book with us
- 12-month guarantee on every job
- Colour picked to suit the job
- We never seal over old sealant
- Anti-fungal sanitary silicone in wet areas
Read what affects the cost and what customers say.