Hertfordshire · England
Glazing & conservatory sealant in Radwell, Hertfordshire
Glazing silicone for conservatories, rooflights, glass panels and shower screens for homeowners, landlords and businesses in Radwell. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Water escaping where a screen meets the wall
- Leaks where conservatory glass meets the frame
- Split or lifting silicone on glass
Looking after it afterwards
After the cure time, these simple habits help:
- Stick to mild cleaners on glass
- Keep harsh solvents off the silicone
- Open vents or windows to let moisture out
- Act on drips or damp patches early
Keep the new joints dry for as long as we advise so the silicone can set properly. After that, clean glass with a mild cleaner.
Drips or damp near a glazing joint shouldn’t be ignored. The cause may be sealant or another part and we’ll find out which.
Glazing silicone in Radwell
Cracked, stained or lifting silicone on glass looks poor and can leak. We remove it without scratching the glass or frame and reseal the joint. We work on glass-to-glass joints, shower screens and glass-to-frame joints, and common reasons people get in touch are failed sealant around rooflight glass and glazing silicone that has cracked or come away.
Outdoor sealant needs dry, clean surfaces, so work on frames around Radwell is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
A one-year guarantee comes as standard, so you are covered after we have gone.
- Place
- Radwell (SG7)
- Region
- Hertfordshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you do try it yourself, take your time over the 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.
Surface by surface
Glass-to-frame joints
Silicone at the glass edge seals it into the frame. When it splits, water can get into the frame.
Glass-to-glass joints
These joints are on show, so a straight, even finish matters.
What we’re called out for in Radwell
Heat and cold make glass and frames move at different rates. In time, the sealant splits or pulls away.
The most common problems we see are:
- Water getting into a conservatory at the joints
- Drips on the inside of a conservatory window
- Stained, discoloured glazing silicone
- Leaking glazing joints on a rooflight
Managing a site like Norton St Nicholas CofE (VA) Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- What product goes in the joint
- The length of the guarantee
- How long to leave it before use
- Whether they seal over old material or remove it
What affects the cost of glazing silicone
Call for a quick quote. The main things that affect it are:
- Whether the work is at height
- Which sealant suits the joint
- The old material and how stubborn it is
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
When you contact us, these details help:
- Pictures of the joints, sent by email
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or email us.
Questions from Radwell
Can you do glazing silicone in Radwell?
Yes, Radwell is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear quote.
I let a flat near Baldock station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
How long does glazing silicone take?
That depends on how much there is to do, but as a guide it takes anything from an hour or two to most of a day, depending on the size of the job. We will tell you when we quote.
Where do you work from?
We work from Crawley. We cover Radwell and the rest of Hertfordshire, along with the rest of our area.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
How do I get a quote for glazing silicone in Radwell?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or drop us an email and tell us what needs doing and where.
Is balustrade sealant something you do?
We can, if the base joint is sealed. Photos help us see what’s there.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes anything from an hour or two to most of a day, depending on the size of the job. In a small place like Radwell, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree the joints to be done.
- Old sealant is removed from the glass and frame.
- The surfaces are cleaned with a suitable solvent.
- New glazing silicone goes in and is finished neatly.
- The joints are checked before we leave.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
How to get a quote
If you are in Radwell and need glazing silicone, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Advice
Also near Radwell
What else we do in Radwell
Radwell homes and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Hinxworth Place (about 2.4 miles north) nearby, there’s older building stock in the area around Radwell as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to Church of All Saints include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. If you let a flat or house near Baldock station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Radwell is about 2 miles north of Letchworth, in Hertfordshire. Homes, rented property, offices and hotels in Radwell can book us for glazing silicone. The work is guaranteed for a year. Across Hertfordshire, we cover 381 places, Radwell among them. Our London page covers work nearby.
All of SG7 is covered for glazing silicone, from the main roads to the quietest streets. Streets in the area include Radwell Lane and The Limes. If you’re just outside Radwell, we cover Stotfold (1 mile west), Stotfold Common (2 miles north-west), Fairfield (2 miles west) and Astwick (2 miles north-west). We also work in nearby towns such as Stevenage (7 miles south), Welwyn Garden City (14 miles south), Harpenden (15 miles south-west), Hitchin (5 miles south-west), Hertford (15 miles south) and Ware (15 miles south-east).
Near you in Radwell
We work in homes and buildings around The Knights Templar School, Norton School and The Chequers Public House and the streets around them. The closest station to Radwell is Baldock station, roughly 1.2 miles south-east of the centre. Nearby you will also find Bygrave House (2 miles east) and Fairfield Hospital (1.9 miles west). Open spaces near Radwell include Arlesey Old Moat and Glebe Meadows.
When it isn’t the sealant
It helps to know what we can’t do:
- Frames that have decayed or split
- A roof that has moved or dropped
- Misting between the panes of a double-glazed unit (a failed unit for a glazier)
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Rooflights
- Glass-to-frame joints
- Glass-to-glass joints
- Conservatory frames
- Glass balustrade bases
- Shower screens