Hertfordshire · England
Glazing & conservatory sealant in Chells, Hertfordshire
Glazing silicone across Chells and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Silicone pulling away from the glass
- Conservatory leaks at frame and glazing joints
- Leaking glazing joints on a rooflight
What glazing silicone looks like in Chells
With historic houses such as Aston Bury (about 2.4 miles south) nearby, there’s older building stock in the area around Chells as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Chells is part of Stevenage, one of the post-war new towns. Many homes date from the post-war decades, and many will have had their original windows replaced. The mastic around replacement frames ages too, and gaps at sills and frame heads are where water gets in.
For landlords with property near Stevenage station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. If you look after a building such as The Nobel School, larger buildings have plenty of frames, and the mastic around each one ages.
Chells is about 1 mile east of Stevenage, in Hertfordshire. Anywhere in SG2, we cover glazing silicone for homes and businesses. We cover 381 towns and villages across Hertfordshire. London is on our list too, around 29 miles away.
Jobs for glazing silicone in SG2 and SG1 works the same way as everywhere else we cover. We cover properties on Scott Road, Eliot Road and Newton Road and the roads around them. Close by, we work in Stevenage (1 mile west), St Nicholas (1 mile north-west), Pin Green (1 mile west), Aston End (1 mile south-east) and Bedwell (1 mile south-west). Further out, we also cover St Albans (13 miles south-west), Bishop's Stortford (14 miles east), Welwyn Garden City (8 miles south), Harpenden (10 miles south-west), Hitchin (5 miles north-west) and Hoddesdon (13 miles south-east).
Near you in Chells
Locally, jobs take us to homes and businesses close to Lodge Farm Primary School. The nearest railway station is Stevenage station, about 1.8 miles south-west. Well-known places in the area include Lister Hospital (2.1 miles north-west) and Benington Castle (2.4 miles south-east). Not far away are Pryor's Wood.
Glazing silicone in Chells, done properly
We work across Chells on glazing joints for homes and businesses. Conservatories, rooflights, glass panels and shower screens are all part of the job, with a sealant chosen for the joint. We’re often asked to deal with black or yellowed silicone on glass joints and shower screens leaking along the wall or tray, on glass balustrade bases, glass-to-frame joints and conservatory frames.
Houses in smaller places like Chells can stand more in the open than those in a built-up town. That’s hard on the mastic around frames and sills.
You’re covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.
- Where
- Chells (SG2, SG1)
- Wider area
- Hertfordshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
Dealing with a leaking shower screen early protects the floor and ceiling. A small leak can reach the floor below before it shows. Around Chells, 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.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What you get with us
- White, clear, grey or coloured to suit, where the product allows
- Sealant colour chosen to suit
- We leave the area clean and tidy
- Anti-fungal sanitary silicone in wet areas
See what affects the cost and what customers say.
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 getting the depth right matters as much as the look.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
What we are called out for in Chells
UV light ages silicone, especially on conservatory roofs. It goes brittle, cracks and stops sticking to the glass and frame.
Common reasons people contact us include:
- Cracked silicone between glass panels
- Mouldy sealant around glass panels
- Conservatory leaks at frame and glazing joints
- Glazing silicone that has cracked or come away
Homes close to St Hugh & St John include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
Questions to ask before you book
- Whether the sealant suits the joint
- The length of the guarantee
- What the quote includes, VAT included or not
- What insurance they hold
How the visit works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It generally takes a few hours for most jobs. For a job in Chells, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We trace the leak and confirm it’s a sealant joint.
- We remove the old sealant carefully.
- We clean the glass and frame so the new silicone bonds.
- We lay the new bead and tool it smooth.
- Each joint is checked and, where possible, water-tested.
How to prepare
- Keep pets and children clear of the area while we work
- Clear items away from the joints we are working on
- Let us know about stairs, lifts or work at height
Getting a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.
Read more
How to look after the new joints
A little care helps the new joints last. We recommend:
- Don’t leave a drip for the next storm
- Clear the conservatory gutters regularly
- Use a gentle glass cleaner and a soft cloth
- Squeegee the shower screen after each use
Don’t use blades or scrapers near the bead when you clean. Stick to a soft cloth.
Shower screen leaks can go unnoticed. It can damage the floor or the ceiling below long before you see it.
Chells: your questions answered
I let a flat near Stevenage station. Can you help?
Yes, we work for landlords and agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Will you come out to Chells?
Yes, Chells is covered. 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.
Can you replace a misted double-glazed unit?
That’s not something we do. Misting between panes means the sealed unit has failed, and a glazier needs to replace it.
What should I tell you?
A short description and the location. If we need more, we’ll ask.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
How long will you be here?
Most jobs take a few hours, depending on how many joints need doing, including the preparation. We’ll confirm how long when we quote.
Can you reseal the base of a glass balustrade?
We can, if the base joint is sealed. Photos help us see what’s there.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings. The choice depends on the product the joint needs.
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- A roof that has moved or dropped
- Condensation trapped between two panes
- Water coming through the roof rather than a sealant joint
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Surfaces we seal
- Glass balustrade bases
- Shower screens
- Conservatory frames
- Glass-to-frame joints
- Rooflights
- Glass-to-glass joints
How the job changes by surface
Glass balustrade bases
Glass balustrades sit in a channel that is often finished with sealant. Failed sealant there lets water collect.
Conservatory frames
Exposed frame joints wear with the weather. A fresh bead seals them again.