Hertfordshire · England
Sopwell Glazing Silicone
Glazing silicone for conservatories, rooflights, glass panels and shower screens in Sopwell, with a 12-month guarantee on every job. Call for a quick quote.
- Split or lifting silicone on glass
- Shower screens leaking along the wall or tray
- Failed joints on frameless glass
Work for landlords, hotels and businesses
If you manage several properties in or around Sopwell, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Glazing silicone in Sopwell, done properly
Glass, frames and walls all move at different rates, and the silicone between them takes the strain. Once it splits or comes away, water finds a way through. We cut it out and reseal with a glazing silicone suited to the joint. If you are dealing with water running down inside the glass and sealant that was laid over old silicone and failed, we can help, whatever the surface.
In a smaller place like Sopwell, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Sopwell (AL1, AL2, AL3)
- Wider area
- Hertfordshire
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Sopwell: your questions answered
Do you cover Sopwell for glazing silicone?
Yes, Sopwell is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Do you cover smaller places like Sopwell?
Yes. Sopwell is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Sopwell and the rest of Hertfordshire, along with the rest of our area.
Can you reseal a frameless shower screen?
Yes. We remove the old silicone carefully, and the joints are cleaned and resealed.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Do you offer different sealant colours?
Usually, yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before we start.
Why not top up the existing silicone?
Silicone does not stick to silicone and water gets between the layers. We cut out the old sealant first.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you when we finish.
How we quote for glazing silicone
There’s no set price list, because no two jobs are the same. The quote depends on:
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- How easy the joints are to reach
- Any working-time requirements on site
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Helping us quote
When you call or email, it’s useful to know:
- Whether it’s a home or a business
- Where the job is, and your postcode
- The problem you’ve noticed
- The rough size of the job
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will explain what’s involved before giving you a price.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Common problems we fix in Sopwell
Heat and cold make glass and frames move, and they don’t move by the same amount. In time, the sealant splits or pulls away.
Any of these means the joints need attention:
- Water running down inside the glass
- Water escaping where a screen meets the wall
- Silicone pulling away from the glass
- Mouldy sealant around glass panels
Letting a property close to St Albans Abbey station? Then a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.
Comparing quotes
- What the cure time is
- Who does the work, and how experienced they are
- Whether VAT is included
- Is the old sealant removed completely?
Also near Sopwell
More services for Sopwell
How it works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The job generally takes a few hours, depending on how many joints need doing. A visit to Sopwell 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 agree the joints to be done.
- Old sealant is removed from the glass and frame.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- The joints are checked before we leave.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
Get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Related advice
Sopwell homes and the weather
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Batchwood Hall (about 2.1 miles north-west) are a reminder that the area around Sopwell 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.
In the older streets around St. Julian's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For site and facilities teams at buildings such as Mandeville Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Sopwell is about 1 mile south of St Albans, in Hertfordshire. Every kind of property in Sopwell can book us for glazing silicone, old or new, large or small. The work is guaranteed for a year. Sopwell is one of 381 towns and villages in Hertfordshire we cover. There’s also a page for London, about 19 miles away.
Here we cover the AL1, AL2 and AL3 postcode area for glazing silicone. If you need glazing silicone at a property on Nuns Lane, Jenny Lane and Vesta Avenue or a nearby road, our applicators can take on the job. Neighbouring places we cover for glazing silicone include St Stephens (1 mile north-west), St Albans (1 mile north), Park Street (1 mile south), Chiswell Green (1 mile south-west) and Frogmore (1 mile south). We also work in nearby towns such as Watford (6 miles south-west), Hemel Hempstead (6 miles west), Stevenage (13 miles north-east), Welwyn Garden City (7 miles north-east), Harpenden (5 miles north) and Hitchin (15 miles north).
What’s near Sopwell
In Sopwell, that means homes and buildings near Verulamium Park, Marlborough Science Academy and North Western pub, among other places. The closest station to Sopwell is St Albans Abbey station, about 0.6 miles north-west. Well-known places in the area include Napsbury Hospital (1.5 miles south-east) and The Maltings (0.9 miles north). The countryside around Sopwell includes Grebe House Wildlife Garden and Verulamium Lake.
Why it’s worth doing now in Sopwell
Replacing windows or a shower screen is not needed for a failed joint. Sound glass and frames usually just need resealing. Around Sopwell, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
- White, clear, grey or another colour, product permitting
- Tidy, careful work
Take a look at how sealant jobs are priced or our reviews.
What the job involves on each surface
Glass-to-glass joints
Frameless glass corners and panels are joined with silicone. We renew it with a clear or matching glazing silicone.
Shower screens
Most shower screen leaks come from the wall or tray joint. Both are resealed with anti-fungal silicone.