Surrey · England
Window & door mastic in Windlesham, Surrey
Window mastic for Windlesham and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic that is falling out in pieces
- Gaps where the sill meets the wall
- A bead that does not match the frame
How we handle window mastic in Windlesham
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We are fully insured ARBOMaster approved applicators, and we give a 12-month guarantee on the work. We work on patio & French doors, timber windows & doors and uPVC windows, and people most often call us about cracked sealant at the sill ends and a bead that doesn’t match the frame.
Houses in smaller places like Windlesham can stand more in the open than those in a built-up town. The mastic around frames on those walls tends to age faster.
Your job is guaranteed for a year, as with all our work.
- Place
- Windlesham (GU20)
- Region
- Surrey
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Windows and doors in Windlesham
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.
For an older house near a landmark such as Church of St John the Baptist, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you look after a building such as Windlesham Village Infant School, the mastic around its windows and doors needs looking after like any other building’s.
Windlesham is about 4 miles north-east of Camberley, in Surrey. If you need window mastic in Windlesham, please ring 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Surrey, Windlesham included. Windlesham is one of 395 towns and villages in Surrey we cover for window mastic. We also work in Reading, around 15 miles away.
All of GU20 is within our area for window mastic. That includes homes and businesses on Church Road, Finney Drive and Cooper Road and the roads around them. Neighbouring places we cover for window mastic include Brick Hill (1 mile east), Lightwater (1 mile south-west), Bagshot (2 miles west), Donkey Town (2 miles south) and Broomhall (2 miles north-east). Larger places within reach include Guildford (9 miles south-east), Woking (5 miles south-east), Camberley (4 miles south-west), Farnham (12 miles south-west), Egham (6 miles north-east) and Walton-on-Thames (11 miles east).
Near you in Windlesham
Typical jobs here are in homes near The Sun pub, Brentmoor Heath and Gordon's School. Windlesham’s nearest station is Bagshot station, roughly 1.4 miles west. A little further out are Chobham Museum (2.6 miles south-east) and Heatherwood Hospital (3.3 miles north-west). Open spaces near Windlesham include Gracious Pond and Virginia Water Lake.
Towns and villages near Windlesham
Also in Windlesham
What we can’t put right
To be straight with you, there are a few things sealant will not fix:
- A door that needs adjusting, rehanging or new seals
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A frame that has rotted at the joint
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- uPVC windows
- Patio & French doors
- Aluminium frames
- Timber windows & doors
- Window sills
- Composite doors
Common problems we fix in Windlesham
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, and a gap filled solid cannot flex. That is what backing rod is for.
It’s worth asking for a quote if you see:
- Leaking joints at the ends of sills
- Untidy mastic left by window fitters
- Rain getting in at the frame or under the sill
- A bead that doesn’t match the frame
For landlords with property near Bagshot station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before you book
- What guarantee comes with the work
- What the cure time is
- Which colour the sealant will be
- What insurance they hold
Leave it or put it right?
Draughts and leaks don’t always mean new windows. Where the frames are sound, new mastic normally deals with draughts and leaks at the edges. If we find failed glass units or worn seals, we will tell you. Homes in smaller places like Windlesham can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
What you get with us
- We’re fully insured
- An ARBOMaster approved applicator
- A choice of colours where the product allows
- We leave the area clean and tidy
Work for landlords, hotels and businesses
We work for landlords and agents as well as homeowners. Sealant work between tenants keeps a property looking cared for.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
How to look after the new joints
So the new joints stay in good condition:
- Walk round the house once a year and look at the joints
- Avoid harsh chemicals near the mastic
- Keep jet washers away from the mastic
- Ventilate rooms so frames don’t stay wet inside
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
What happens on the day
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours for a handful of frames, longer for a whole house. In a smaller place like Windlesham, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Mention if the joints have been sealed before
How to get a quote
Getting a quote is simple: tell us what needs doing and where. A few pictures by email make the job easier to understand, and we will take it from there.
Read more
Should I try it myself first?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
FAQs for Windlesham
I let a flat near Bagshot station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover Windlesham for window mastic?
Yes, Windlesham is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can you get sealant to suit coloured frames?
Yes. We can use white, brown, anthracite grey, black or clear.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
What should I tell you?
A short description and the location. If we need more, we will ask.
Can new window sealant be painted?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can resealing stop a draught around my window?
Yes, if the air is getting in around the frame. If it’s through the window’s own seals or a hinge, that’s a different fix, and we’ll say so.