Surrey · England
Margery Window Mastic
Window and door frames in Margery need attention? We cut out the old, prepare the joints and apply the right sealant.
- Old mastic that has gone black or come away
- Leaking joints at the ends of sills
- Whistling draughts around closed windows
Window mastic in Margery
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you have mastic that has split away from the wall and draughts coming in around windows and doors, we can put it right, on composite doors, uPVC windows and timber windows & doors alike.
Homes in small places like Margery often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Margery (KT20)
- Wider area
- Surrey
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Window mastic in Margery: local notes
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.
Homes close to Church of Jesus Christ and the Wisdom of God include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Kingswood Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Margery is about 2 miles north of Reigate, in Surrey. Across the KT20 area, we can carry out window mastic at your property. Across Surrey, we cover 395 places, Margery among them. Our Crawley page covers work nearby (10 miles or so).
Jobs for window mastic in KT20 is quoted and booked the same way as anywhere else. That includes homes and businesses on Manor Lane, Margery Lane and Mint Lane. Neighbouring places we cover for window mastic include Mogador (1 mile west), Lower Kingswood (1 mile north-west), Reigate (2 miles south), Kingswood (2 miles north) and Walton on the Hill (2 miles north-west). Within a short drive, we also cover Epsom (6 miles north-west), Horley (6 miles south), Ewell (7 miles north), Walton-on-Thames (12 miles north-west), Caterham (5 miles east) and Dorking (6 miles west).
Around Margery
In Margery, that means homes and buildings near Reigate Manor Hotel, Reigate College and Castle Grounds. The nearest railway station is Reigate station, about 1.4 miles south. Well-known places in the area include East Surrey Hospital (3.4 miles south-east) and The Belfry (2.1 miles south-east). The countryside around Margery includes Colley Hill and Reigate Heath.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Wash the frames with mild soapy water
- Repaint timber before it’s bare
- Avoid blasting the frames with a pressure washer
- Don’t paint over the silicone
Most silicone sealants won’t take paint, so if you are planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
Also near Margery
Also in Margery
Can I do it myself?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Margery: your questions answered
Can you help a landlord with a rental near Reigate station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.
Is Margery in your area for window mastic?
Yes. Our work covers London and the South East, and Margery is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can new window sealant be painted?
It depends on the sealant. Some hybrid sealants can be painted; silicone cannot. Tell us if you are decorating and we’ll choose accordingly.
Can you do upstairs windows?
Yes, where it’s safe. For high or awkward windows, we’ll tell you what access is needed.
The process
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a few hours for a handful of frames, longer for a whole house. Somewhere as small as Margery, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
Before we arrive
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
- Plan for the work area to be out of bounds to pets and children
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or send us an email.
Related advice
Common problems we fix in Margery
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
If you can see any of these, it’s time to have the joints looked at:
- Old mastic that has gone black or come away
- Draughty joints inside around the window
- Cracked sealant at the sill ends
- A bead that doesn’t match the frame
For landlords with property near Reigate station, renewing tired window mastic between tenants heads off draught and damp complaints.
Questions to ask before booking
- The length of the guarantee
- Whether all the old sealant comes out first
- Who does the work, and how experienced they are
- Are they insured?
Honest limits
To be straight with you, some problems need a different trade:
- Rotten timber, which needs a joiner first
- Broken hinges, locks or handles
- Condensation trapped between the panes
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in Margery
- Patio & French doors
- Aluminium frames
- uPVC windows
- Window sills
- Timber windows & doors
- Composite doors
How the job changes by surface
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
Window sills
Sills catch the water running down the glass, so the sill ends and the joint under the frame are vital. Each is cleaned out and resealed.
Landlord and commercial work in Margery
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured for the work.
If you manage several properties in or around Margery, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.