Slough · England
Glazing & conservatory sealant in Upton, Slough
We cover Upton for glazing silicone for conservatories, rooflights, glass panels and shower screens. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Mouldy sealant around glass panels
- Sealant that was laid over old silicone and failed
- Silicone pulling away from the glass
Questions from Upton
Is Upton in your area for glazing silicone?
Yes. Our work covers London and the South East, and Upton is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Is Upton within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Why not top up the existing silicone?
A top-up rarely holds. Fresh silicone won’t bond to cured silicone so we take it all out and start clean.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint.
Can you replace a misted double-glazed unit?
That’s not something we do. A misted unit has failed inside, and a glazier needs to replace it.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Is there any odour?
Possibly a little. It fades as the sealant cures.
Is it possible to redo the silicone on a shower screen?
Yes, we do these often. We use anti-fungal silicone made for wet areas.
Glazing silicone in Upton, done properly
Glass replacement isn’t something we do and a misted double-glazed unit needs a glazier. What we do is the silicone around the glass and that’s often where the water gets in. Common call-outs are for sealant that was laid over old silicone and failed and drips on the inside of a conservatory window, on rooflights, glass balustrade bases and shower screens.
In smaller places like Upton, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. The right sealant depends on the frame and on what it sits in.
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.
- Where
- Upton (SL1, SL3, SL2)
- Wider area
- Slough
- Guarantee
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Upton
Other services in Upton
What happens if it’s left?
Glazing joints need a sealant made for the job. A general-purpose tube may not bond well or may react with the frame, so we use neutral-cure glazing silicone. Homes in smaller places like Upton 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.
Combining jobs into one visit usually makes better use of the time than several visits. We’ll send you a clear quote for the lot.
Why choose Mr Mastic in Upton
- 4.9 on Google from 180+ five-star reviews
- Arbo and Everbuild products
- Neat joints and a tidy finish
- We never seal over old sealant
Landlord and commercial work in Upton
We work for letting agents and landlords as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours, depending on how many joints need doing. Parking around Upton is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We find where water is getting in and check whether it’s a sealant joint.
- We cut out the failed silicone, taking care of the glass and frame.
- We clean the joint with a solvent that suits the glass and frame.
- We apply a neutral-cure glazing silicone and tool it smooth.
- We look over every joint and, where we can, test it with water.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
- Move anything stored near the joints
Ask for a quote
Every job is quoted individually. Simply call 0345 464 0079 or drop us an email and describe the job.
Read more
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Wipe the screen down after showering
- Act on drips or damp patches early
- Keep scrapers and blades away from the silicone
- Use a gentle glass cleaner and a soft cloth
Use mild cleaners on and around the silicone. Harsh solvents may damage the bead.
Damp patches, drips and condensation along a joint are worth checking. The cause may be sealant or another part, and we will tell you which.
Glazing silicone in Upton: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Windsor Castle (about 1.5 miles south-west) are a reminder that the area around Upton has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like St Mary's Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around Church of St Laurence, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Upton is about 1 mile south-east of Slough, in Slough. If you need glazing silicone in Upton, please phone 0345 464 0079 or drop us an email for a quick quote. We cover Slough from our Crawley base. Upton is one of 31 towns and villages in Slough we cover. There’s also a page for Reading, roughly 17 miles from Upton.
Every address in SL1, SL3 and SL2 is covered for glazing silicone. Local streets include Mere Road, Upton Road and High Street, all of which we cover. Being close to the M4 and A332, Upton is easy for our applicators to reach for glazing silicone. Close by, we work in Middlegreen (2 miles east), Langley (2 miles east), George Green (2 miles north-east), Wexham Court (2 miles north) and Wexham Street (3 miles north). Further out, we also cover Britwell (3 miles north-west), Burnham (3 miles north-west), Stoke Poges (3 miles north), Huntercombe (3 miles north-west), Farnham Common (4 miles north) and Farnham Royal (3 miles north-west). Upton is one of the larger places we cover in Slough.
Landmarks near Upton
Typical jobs here are in homes near The Red Cow Public House, Upton Court Grammar School and Long Close School. The nearest railway station is Slough station, about 0.6 miles north. A little further out are Windsor Castle (1.5 miles south-west) and Museum of Eton Life (1.2 miles south-west). Green spaces nearby include Stoke Common and Taplow Lake.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
When to call us in Upton
Some conservatory leaks aren’t sealant at all: failed roof panels, slipped glazing bars and blocked gutters cause them too. That is why we trace the leak first.
Look out for any of the following:
- Conservatory leaks at frame and glazing joints
- Rooflight joints letting water in
- Glazing silicone that has cracked or come away
- New silicone smeared over old sealant
If you let a flat or house near Slough station, a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.
What to look for in a quote
- Which sealant they’ll use, and why
- Are they insured?
- What the cure time is
- What the quote includes, VAT included or not
What sealant work can’t fix
We’d rather tell you now than do work that will not last, so these are the limits:
- Water coming through the roof rather than a sealant joint
- Glass that needs replacing
- A frame that needs repairing or replacing
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Upton
- Glass-to-frame joints
- Rooflights
- Shower screens
- Conservatory frames
- Glass-to-glass joints
- Glass balustrade bases