Buckinghamshire · England
Glazing Silicone in Longwick
Professional glazing silicone in and around Longwick, with every bit of old sealant taken out first.
- Stained, discoloured glazing silicone
- Rooflight joints letting water in
- Silicone pulling away from the glass
Glazing silicone in Longwick
Glazing silicone that has yellowed, blackened or come away looks poor and can leak. It comes off cleanly, without marking the glass before the new bead goes in. We work on shower screens, conservatory frames and glass balustrade bases, and the jobs we see most are water escaping where a screen meets the wall and water tracking down the inner face of the glass.
In smaller places like Longwick, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Longwick (HP27)
- Region
- Buckinghamshire
- Cover
- One year on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Longwick questions
Do you cover Longwick for glazing silicone?
Yes, Longwick is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Do you cover smaller places like Longwick?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for letting agents?
Yes. We work for householders, landlords, letting agents, businesses and hotels across Buckinghamshire.
Can I add another job to the visit?
Of course. Doing several areas at once is normally more efficient.
What do you need from me for a quote?
A short description and the location, plus photos if you have them. We’ll ask anything else we need to know.
Is a special sealant needed for glass?
A glazing silicone chosen for the joint. Neutral-cure silicone is the usual choice.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Longwick.
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Squeegee the shower screen after each use
- Keep air moving in the conservatory
- Act on drips or damp patches early
- Keep scrapers and blades away from the silicone
Check the joints once a year. Catching a split early keeps the repair small, before water gets in.
If silicone on glass has cracked, water is already getting in. Resealing now is a small job, compared with repairing damaged frames or plaster.
What we are called out for in Longwick
Dirt and grease stop silicone sticking. If the glass and frame weren’t cleaned properly the sealant may lift within a few years.
Look out for these signs:
- Leaks where conservatory glass meets the frame
- A quick top-up bead that didn’t last
- Silicone pulling away from the glass
- Black or yellowed silicone on glass joints
If you let a flat or house near Monks Risborough station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.
Before you book anyone
- Which sealant they’ll use, and why
- Is the old sealant removed completely?
- How long the guarantee is
- What insurance they hold
Different surfaces, different methods
Shower screens
Silicone holds the water in on frameless screens. We renew it without marking the glass.
Rooflights
Rooflight leaks can come from the sealant or the roof. We check which it is.
The process
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours for most jobs. A visit to Longwick is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, we trace the leak and check it’s coming through a sealant joint.
- The old sealant is removed from the glass and frame without scratching them.
- We clean the joint with a solvent that suits the glass and frame.
- New glazing silicone goes in and is tooled to a neat finish.
- We look over every joint and, where we can, test it with water.
Preparing for the visit
- Mention any tricky access
- Clear the area around the work
- Try not to wet indoor joints just before the visit
Getting a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Advice
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
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.
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Also near Longwick
Other services in Longwick
Why it’s worth doing now in Longwick
Replacing windows or a shower screen isn’t needed for a failed joint. Sound glass and frames generally just need resealing. In an older home around Longwick, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Why choose Mr Mastic in Longwick
- 180+ five-star Google reviews
- A sealant colour to suit the surroundings
- Over 20 years’ experience
- ARBOMaster approved applicator
Take a look at how sealant jobs are priced or what customers say.
Glazing silicone in Longwick: local notes
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Owlswick Chapel, 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 Longwick Church of England Combined School, its window and door frames need their mastic kept sound, just like a home’s.
Longwick is about 5 miles east of Thame, in Buckinghamshire. Jobs in Longwick get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 263 towns and villages across Buckinghamshire, large and small. Our Oxford page covers work nearby.
Our applicators cover all of the HP27 postcode area for glazing silicone. Whether your property is on Headland End, Wickfields and Furrow Drive or anywhere close by, we can help. Neighbouring places we cover for glazing silicone include Owlswick (1 mile north), Alscot (1 mile east), Pitch Green (1 mile south-west), Ilmer (1 mile north-west) and Horsenden (1 mile south). Further out, we also cover Aylesbury (6 miles north), High Wycombe (9 miles south-east), Chesham (11 miles east), Marlow (12 miles south), Amersham (12 miles east) and Beaconsfield (13 miles south-east).
Around Longwick
Around Longwick, our work takes us to homes and buildings near Princes Risborough School and The Red Lion Public House and the streets around them. The nearest railway station is Monks Risborough station, about 1.3 miles east. Well-known places in the area include Great Kimble Dial Hill (2.4 miles east) and St John's Hospital (4.6 miles north). For a walk, there’s Brush Hill Local Nature Reserve and Beacon Hill.