Surrey · England
Caterham Window Mastic
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Caterham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant in the wrong colour for the frame
- Water coming in at the bottom corners of a door
- Cracked or shrunken mastic around the frame
Window mastic in Caterham, done properly
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. We are often asked to deal with cracked sealant at the sill ends and cracked or shrunken mastic around the frame, on timber windows & doors, composite doors and window sills.
In a town like Caterham, the windows on the most exposed side of a house take the brunt of the rain, and that is normally where the sealant gives up first. Checking every frame, not just the obvious one, is time well spent.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Caterham (CR3)
- Wider area
- Surrey
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
The process
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for a few frames, or a day or more for a whole house. In Caterham, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we are working on
Get a quote
Want a quote for window mastic? Please ring 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear price before we start.
Advice
When it isn’t the sealant
We will always be straight with you, so here’s what sealant can’t fix:
- Rotten timber, which needs a joiner first
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Patio & French doors
- Composite doors
- Aluminium frames
- uPVC windows
- Window sills
- Timber windows & doors
What affects the cost of window mastic
Every job gets its own quote. These are the things that affect it:
- Working hours on commercial sites
- The size of the job
- The number of rooms or windows
- Which sealant suits the joint
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- The rough size of the job
- The problem you’ve noticed
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will talk you through the work before giving you a price.
Common problems we fix in Caterham
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.
People normally contact us when they notice one of these:
- Rain getting in at the frame or under the sill
- Mastic that’s falling out in pieces
- White mastic on grey or black frames
- Gaps left after new windows were fitted
If you live in an older home near Sacred Heart Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- What the cure time is
- What guarantee comes with the work
- Whether you can choose the colour
- What insurance they hold
For landlords and businesses
We work for landlords and letting agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
What happens if it’s left?
Running fresh sealant over the old joint is tempting, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. In a family home in Caterham, a failed seal around a bath or a frame lets water into places you can’t see, like the floor under a bath, the back of a panel or the inside of a wall. Whatever the joint, failed sealant only gets worse.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why choose Mr Mastic in Caterham
- We agree the colour with you first
- Trusted Arbo and Everbuild sealants
- Experience in homes, commercial sites and hotels
- A sealant colour to suit the surroundings
See our cost guide or what customers say.
Windows and doors in Caterham
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Titsey Place (about 4.7 miles east) nearby, there’s older building stock in the area around Caterham as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you look after a building such as Hillcroft Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Caterham station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Caterham is about 11 miles south-west of Orpington, in Surrey. If you need window mastic in Caterham, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover Surrey from our Crawley base, Caterham included. Our area takes in 395 places across Surrey, large and small. There’s also a page for Crawley, about 13 miles away.
Postcode districts we cover here for window mastic: CR3. We cover properties on High Street, London Road and Park Road. Being close to the B2030 and B2031, Caterham is easy for our applicators to reach for window mastic. Nearby, we also carry out window mastic in Woldingham Garden Village (2 miles east), Tyler's Green (2 miles south-east), Woldingham (3 miles east), Godstone (3 miles south) and Church Town (3 miles south-east). Further out, we also cover Epsom (8 miles north-west), Horley (8 miles south-west), Redhill (5 miles south-west), Ewell (8 miles north-west), Reigate (6 miles south-west) and Walton-on-Thames (15 miles north-west).
Landmarks near Caterham
Around Caterham, our work takes us to homes and buildings near Sunnydown School, The King And Queen Public House and de Stafford School and the streets around them. Caterham’s nearest station is Caterham station, about 0.7 miles south-east. Well-known places in the area include Bletchingley Castle (3.4 miles south) and East Surrey Museum (0.6 miles south-east). Green spaces nearby include South London Downs National Nature Reserve and Mercers Lake.
Nearby places to Caterham
What else we do in Caterham
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Repaint timber before it’s bare
- Check the mastic once a year
- Don’t use solvent cleaners on the joint
- Use gentle cleaners on frames and sealant
Clean the frames with mild soapy water, and avoid solvent cleaners on the sealant.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. A new joint closes it up.
Your questions about window mastic in Caterham
Do you cover Caterham for window mastic?
Yes, Caterham is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing.
Is there a guarantee on window mastic in Caterham?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
What does window mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.