West Sussex · England
Window & door mastic in Forge Wood, West Sussex
Window mastic across Forge Wood and nearby, with every bit of old sealant taken out first.
- Draughts coming in around windows and doors
- Sealant in the wrong colour for the frame
- Gaps left after new windows were fitted
About our window mastic in Forge Wood
Whether it’s one leaking patio door or every frame on the house, the work is priced before anything is done. Just phone 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached for window mastic in Forge Wood. We work on timber windows & doors, uPVC windows and patio & French doors, and common reasons people get in touch are old mastic that has gone black or come away and mastic that has split away from the wall.
Homes around Forge Wood range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
Big or small, it’s backed by our 12-month guarantee.
- Location
- Forge Wood (RH10, RH6)
- Wider area
- West Sussex
- Cover
- One year on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Repaint timber before it’s bare
- Use gentle cleaners on frames and sealant
- Don’t paint over the silicone
- Walk round the house once a year and look at the joints
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
Wet, windy weather is when failed mastic shows itself, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
Different surfaces, different methods
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain cannot run into the wall.
Your questions about window mastic in Forge Wood
Is Forge Wood in your area for window mastic?
Yes, Forge Wood is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Can you help a landlord with a rental near Three Bridges station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
How long will my window job take?
The work takes most of a day for a typical house, less for a few frames. Access and the amount of old mastic make the biggest difference.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Can I paint over the new sealant?
Not normally, if it’s silicone. Tell us your decorating plans and we’ll pick a sealant to suit.
Windows and doors in Forge Wood
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.
For landlords with property near Three Bridges station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Forge Wood is about 2 miles north-east of Crawley, in West Sussex. Homes, rented property, offices and hotels in Forge Wood can book us for window mastic, old or new, large or small. The work is guaranteed for a year. 371 places in West Sussex are on our list, large and small.
We cover every part of RH10 and RH6 for window mastic and the streets around it. Streets in the area include Moore Road, Steers Lane and Radford Road. We also cover Tinsley Green (1 mile north), Pound Hill (1 mile south), Shipley Bridge (1 mile north-east), Copthorne (1 mile east) and Three Bridges (1 mile south). Larger places within reach include Horsham (9 miles south-west), Haywards Heath (10 miles south), Burgess Hill (12 miles south), East Grinstead (6 miles east), Broadfield (4 miles south-west) and Billingshurst (15 miles south-west).
Local landmarks in Forge Wood
Around Forge Wood, our work takes us to homes and buildings near Worth Park Gardens, The Greyhound pub and The Gatwick School, among other places. Forge Wood’s nearest station is Three Bridges station, about 1.4 miles south of the centre. A little further out are Crawley Museum (2.1 miles south-west) and Langley Green Hospital (1.7 miles west). Open spaces near Forge Wood include Tilgate Lake.
When something else is needed
A few problems are outside what sealant work can do:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Penetrating damp from a failed cavity tray or render
- Worn gaskets, brush seals or a door that has dropped
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before booking.
What we seal
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- uPVC windows
- Window sills
- Composite doors
Nearby places to Forge Wood
Also in Forge Wood
Quotes for window mastic in Forge Wood
We quote each job individually. These are the things that affect it:
- Any mould that needs treating
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- Access and height
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Helping us quote
To help us quote quickly, let us know:
- Photos by email, if that’s easy
- Roughly how big the job is
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
For window mastic in Forge Wood, call 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
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 anything from an hour or two to a full day, depending on how many frames there are in most cases. Parking around Forge Wood is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
- Mention if the joints have been sealed before
Getting a quote
Want a quote for window mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Landlord and commercial work in Forge Wood
For anyone letting property in or around Forge Wood, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Hotels need rooms back in use, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
Signs you need window mastic in Forge Wood
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. If the sealant can’t stretch, it splits.
Look out for any of the following:
- Rushed sealant from a window installation
- Rain getting in at the frame or under the sill
- Cracked or shrunken mastic around the frame
- Draughty joints inside around the window
Schools such as Forge Wood Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- The length of the guarantee
- Is the old sealant removed completely?
- What the cure time is
- Who turns up on the day