Surrey · England
Window & door mastic in Chelsham, Surrey
Window mastic in Chelsham from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rain getting in at the frame or under the sill
- Untidy mastic left by window fitters
- Whistling draughts around closed windows
About our window mastic in Chelsham
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We’re fully insured ARBOMaster approved applicators, and we give a 12-month guarantee on the work. Typical jobs include hard, cracked sealant around windows and leaking joints at the ends of sills, on window sills, patio & French doors and timber windows & doors.
In a village or hamlet like Chelsham, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
Every job comes with a one-year guarantee, wherever you are in Surrey.
- Location
- Chelsham (CR6)
- Region
- Surrey
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Chelsham homes and the weather
Historic houses like Addington Palace (about 3 miles north) are a reminder that the area around Chelsham 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. 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.
In the older streets around Church of St Mary the Virgin, the joint between an old wall and a newer frame is normally the first place rain gets in. Schools such as Warlingham Village Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Chelsham is about 3 miles north-east of Caterham, in Surrey. If you need window mastic in Chelsham, please ring 0345 464 0079 or email us for a quick quote. We cover Surrey from our Crawley base, Chelsham included. Our area takes in 395 places across Surrey, large and small. There’s also a page for London, about 13 miles away.
Postcode districts we cover here for window mastic: CR6. Local streets include Chelsham Common and Chelsham Road, all of which we cover. Nearby, we also carry out window mastic in Farleigh (1 mile north), Warlingham (1 mile west), Hamsey Green (1 mile west), Fickleshole (1 mile north-east) and New Addington (2 miles north). Further out, we also cover Epsom (10 miles west), Horley (11 miles south-west), Redhill (8 miles south-west), Ewell (10 miles west), Reigate (9 miles south-west) and Caterham (3 miles south-west).
Near you in Chelsham
In Chelsham, that means homes and buildings near Warlingham School, Ledgers Wood and Hare & Hounds pub. Chelsham’s nearest station is Woldingham station, about 1.9 miles south-west. Nearby you’ll also find Warlingham Park Hospital (under half a mile north) and East Surrey Museum (3 miles south-west). Green spaces nearby include Hutchinson's Bank and Nore Hill.
How it works
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from an hour or two to a full day, depending on how many frames there are. In a small place like Chelsham, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Move anything stored near the joints
- Let us know if you’ve seen damp or leaks
Getting a quote
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or send us an email and describe the job.
Advice
Places near Chelsham
More services for Chelsham
What we are called out for in Chelsham
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
Keep an eye out for these signs:
- A bead that does not match the frame
- Old mastic that has gone black or come away
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
If you let a flat or house near Woldingham station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Before you book anyone
- Whether they seal over old material or remove it
- What happens if the job turns out different
- Is VAT in the price?
- What insurance they hold
Leave it or put it right?
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. Older cottages and farmhouses around Chelsham 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 price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
What you get with us
- One-year guarantee on every job
- We agree the colour with you first
- A choice of colours where the product allows
- Trusted Arbo and Everbuild sealants
Read our cost guide or customer reviews.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Honest limits
A few problems are outside what sealant work can do:
- Damp problems in the wall away from the window
- Rotten timber, which needs a joiner first
- A failed sealed unit that has misted up
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly.
Surfaces we seal
- Aluminium frames
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Window sills
- Composite doors
Common questions in Chelsham
Can you help a landlord with a rental near Woldingham station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Is Chelsham in your area for window mastic?
Yes. Our work covers London and the South East, and Chelsham is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Can you do upstairs windows?
Yes, in most cases. Access is planned before work begins.
Can new window sealant be painted?
Not if it’s silicone. Tell us your decorating plans and we’ll pick a sealant to suit.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Are you insured?
Yes. Mr Mastic is fully insured.
What the job involves on each surface
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. The bead is colour-matched to the frame.
Work for landlords, hotels and businesses
For anyone letting property in or around Chelsham, several properties can go on one quote. Send us the addresses and the work at each.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.