West Sussex · England
Slaugham Window Mastic
Problem with your window and door frames in Slaugham? We cut out the old, prepare the joints and apply the right sealant.
- Draughts coming in around windows and doors
- Cracked or shrunken mastic around the frame
- Old mastic that has gone black or come away
Window mastic for homes and businesses in Slaugham
Every window and door frame has a gap around it, and mastic is what closes it. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We’re often asked to deal with a bead that doesn’t match the frame and damp patches on the reveal after heavy rain, across composite doors, window sills and patio & French doors.
Mastic can only go onto a dry, clean joint, so window work in Slaugham is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee, large or small.
- Place
- Slaugham (RH17)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Slaugham
If you are painting or rendering, reseal at the same time. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. Where a wall is exposed, as many are in small places like Slaugham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What you get with us
- White, clear, grey or another colour, product permitting
- Trusted Arbo and Everbuild sealants
- Colour agreed with you before work begins
- Any old sealant cut out fully, not covered over
See our cost guide or what customers say.
What we do, step by step
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a morning for a couple of windows and a door. Somewhere like Slaugham 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.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
- Mention any tricky access
Getting a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work.
Advice
How we quote for window mastic
We quote each job individually. This is what makes a difference:
- How many areas need sealing
- Whether the work is at height
- The product the joint needs
- How much old sealant there is and how hard it is to remove
Doing several joints on one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Any previous sealing or DIY work
- The problem you’ve noticed
- The address or postcode of the job
- A few pictures by email, if you can
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Slaugham questions
Do you cover smaller places like Slaugham?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Balcombe station. Can you help?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint.
Will new mastic stop draughts?
Often, yes. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages to suit the site.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Are you fully insured?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
Do you seal inside as well as outside?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
Towns and villages near Slaugham
Other services in Slaugham
Landlord and commercial work in Slaugham
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Housing providers, facilities teams and property managers book us too in Slaugham and across West Sussex. Several sites can be quoted together.
Window mastic in Slaugham: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Tyes Place (about 1.8 miles east) nearby, there’s older building stock in the area around Slaugham as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Schools such as Warninglid Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Balcombe station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Slaugham is about 5 miles south of Crawley, in West Sussex. Jobs in Slaugham get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Slaugham is one of 371 towns and villages in West Sussex where we work.
We work across RH17 for window mastic and the streets around it. We also cover the places around Slaugham: Handcross (1 mile north), Plummers Plain (1 mile west), Lower Beeding (2 miles west), Colwood (3 miles south) and Crabtree (3 miles south-west). Further out, we also cover Crawley (5 miles north), Horsham (5 miles west), Haywards Heath (6 miles south-east), Burgess Hill (7 miles south-east), East Grinstead (10 miles north-east) and Shoreham-by-Sea (14 miles south).
Around Slaugham
Typical jobs here are in homes near Carpenter's Arms and the streets around them. Slaugham’s nearest station is Balcombe station, about 3.3 miles east. A little further out are Cuckfield Museum (3.6 miles south-east) and Crawley Hospital (5.4 miles north). For a walk, there’s Blunts Wood and Paiges Meadow and Tilgate Lake.
What we’re called out for in Slaugham
Timber windows bring their own problems. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
Any of these means the joints need attention:
- White mastic on grey or black frames
- Water coming in at the bottom corners of a door
- Draughty joints inside around the window
- Mastic that is falling out in pieces
If you live in an older home near St Mary's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- Whether they’re fully insured
- How much experience the applicator has
- The length of the guarantee
- Is VAT in the price?
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Don’t use solvent cleaners on the joint
- Check the mastic once a year
- Keep paint and stain on wooden frames in good order
- Use gentle cleaners on frames and sealant
Try not to touch the new joint while it cures, for as long as we advise. Do not point a pressure washer at the joints.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.