East Sussex · England
Window & door mastic in Wych Cross, East Sussex
Mastic around window and door frames, sills and patio doors for homes and businesses in Wych Cross and across East Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rain getting in at the frame or under the sill
- Sealant in the wrong colour for the frame
- Gaps left after new windows were fitted
What we cannot put right
We won’t take on work that will not last, so these are the limits:
- A frame that has rotted at the joint
- Penetrating damp from a failed cavity tray or render
- Broken hinges, locks or handles
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in Wych Cross
- Window sills
- Aluminium frames
- Timber windows & doors
- uPVC windows
- Composite doors
- Patio & French doors
How we handle window mastic in Wych Cross
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty. Where the air is getting in through the window itself, we’ll say so. If you’re dealing with rushed sealant from a window installation and cold air getting in at the frame edge, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Wych Cross is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Wych Cross (RH18)
- Wider area
- East Sussex
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Quotes for window mastic in Wych Cross
Every job gets its own quote. These are the things that affect it:
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
- How easy the joints are to reach
- Any mould that needs treating
What you pay reflects the work, not guesswork. That is why we ask a few questions first and agree the price before starting.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Roughly how big the job is
- If someone has resealed it before
- The type of property
- How we’d reach the joints
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, ring 0345 464 0079 or send us an email.
Window mastic in Wych Cross: local notes
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Standen (about 3.2 miles north-west) are a reminder that the area around Wych Cross has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Standen, about 3.2 miles north-west, is one of the historic houses in the wider area around Wych Cross, and older homes nearby need a sealant that suits their walls. Managing a site like Greenfields School? Then the mastic around its windows and doors needs looking after like any other building’s.
Wych Cross is about 4 miles south-east of East Grinstead, in East Sussex. Jobs in Wych Cross get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 289 places across East Sussex, from the larger towns to small villages. You can also see our page for Crawley, about 10 miles away.
We cover every part of the RH18 postcode area for window mastic and the streets around it. Local streets include Lewes Road and Wych Cross. We also cover Chelwood Gate (1 mile south), Forest Row (2 miles north), Birchgrove (2 miles south-west), Coleman's Hatch (2 miles north-east) and Chelwood Common (2 miles south). Larger places within reach include Lewes (13 miles south), Crowborough (6 miles east), Uckfield (8 miles south-east), South Malling (13 miles south), Heathfield (12 miles south-east) and Southover (14 miles south).
What’s near Wych Cross
For rail, the closest station is East Grinstead station, about 4.5 miles north-west. Well-known places in the area include Heaven Farm Museum (3.6 miles south) and Waterbury Castle (3.6 miles south-west). Open spaces near Wych Cross include Brickfield Meadow.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Look round the frames every year or so
- Avoid harsh chemicals near the mastic
- Paint up to the joint, not over it
- Wash the frames with mild soapy water
Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. Resealing closes it.
Places near Wych Cross
More services for Wych Cross
FAQs for Wych Cross
Is Wych Cross within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near East Grinstead 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 will give you a fixed price before any work starts.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
What do you put in the joint?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
How much does window mastic cost in Wych Cross?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint before we leave.
How long does it take to reseal the windows on a house?
Allow most of a day for a typical house, less for a few frames. Access and how stubborn the old mastic is affect the time most.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Landlords, agents and businesses in Wych Cross
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
We work for landlords and agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Leave it or put it right?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. Older cottages and farmhouses around Wych Cross can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why Wych Cross customers choose us
- Every job guaranteed for a year
- Fully insured
- More than 20 years in sealant work
- Anti-fungal silicone where joints get wet
See our cost guide or customer reviews.
What we do, step by step
You do not need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes most of a day for a typical house, less for a few frames in most cases. Somewhere like Wych Cross needs a little journey planning: 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 look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Related advice
Common problems we fix in Wych Cross
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, leaving a hairline gap down one side.
The problems people usually mention when they call include:
- Draughty joints inside around the window
- A bead that doesn’t match the frame
- Hard, cracked sealant around windows
- Mastic that’s falling out in pieces
Letting a property close to East Grinstead station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
What your quote should include
- Whether all the old sealant comes out first
- Whether they’re fully insured
- How hidden problems are handled
- What guarantee comes with the work