Hertfordshire · England
Gosmore Glazing Silicone
Professional glazing silicone in and around Gosmore, with every bit of old sealant taken out first and a 12-month guarantee.
- New silicone smeared over old sealant
- Drips on the inside of a conservatory window
- Glass-to-glass joints that have split
How the job changes by surface
Glass balustrade bases
The base of a glass balustrade is normally sealed. When it fails, water can sit in the channel.
Glass-to-glass joints
Frameless glass corners and panels are joined with silicone. We renew it with a clear or matching glazing silicone.
Glazing silicone in Gosmore, done properly
Across Gosmore, we reseal glazing joints in homes, offices and hotels. From conservatories to shower screens, it’s the same careful method, with a sealant chosen for the joint. Typical jobs include sealant that was laid over old silicone and failed and water escaping where a screen meets the wall, across shower screens, glass balustrade bases and rooflights.
Homes in small places like Gosmore often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Your job is guaranteed for a year, as with all our work.
- Place
- Gosmore (SG4)
- Region
- Hertfordshire
- Cover
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Gosmore
What else we do in Gosmore
Landlord and commercial work in Gosmore
Landlords and agents in Gosmore can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Windows and doors in Gosmore
The South East is one of 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 Knebworth House (about 4.7 miles south-east) are a reminder that the area around Gosmore has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For landlords with property near Hitchin station, glazing joints are worth checking at the end of a tenancy, before a small leak grows. If you live in an older home near Church of St Ippolyts (church of England), the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Gosmore is about 1 mile south of Hitchin, in Hertfordshire. From the centre of Gosmore to the outskirts, glazing silicone is available for homes and businesses alike, from flats and houses to offices and hotels. Gosmore is one of 381 places in Hertfordshire we cover for glazing silicone. For nearby work, see our London page, about 31 miles away.
Postcode districts we cover here for glazing silicone: SG4. That includes homes and businesses on London Road, Mill Lane and Orchard Close and the roads around them. We also cover St Ippolyts (1 mile east), St Ibbs (1 mile south-east), Sperberry Hill (1 mile south-east), Charlton (1 mile north-west) and Little Almshoe (1 mile south-east). Within a short drive, we also cover Hemel Hempstead (15 miles south-west), Stevenage (4 miles south-east), St Albans (13 miles south), Welwyn Garden City (10 miles south), Harpenden (9 miles south-west) and Hatfield (12 miles south).
Local landmarks in Gosmore
In Gosmore, that means homes and buildings near St Mary's Church, Butts Close and The Bird in Hand pub and the streets around them. Other local landmarks include Hitchin Girls' School (1.1 miles north) and Kingshott School (0.8 miles north-east). For rail, the closest station is Hitchin station, roughly 1.5 miles north. Nearby you will also find North Hertfordshire Museum (1.3 miles north) and Wymondley Castle (1.7 miles east). For a walk, there’s Markham's Hill and Purwell Ninesprings.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
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.
How it works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes a few hours, depending on how many joints need doing, depending on how much there is to do. For a village or hamlet like Gosmore, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- We check the finished joints and test with water where it’s safe.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
How to get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.
Related advice
Gosmore: your questions answered
I let a flat near Hitchin station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or email us with the details for a clear quote.
Is Gosmore in your area for glazing silicone?
Yes. We work across London and the South East, and Gosmore is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Where do you work from?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
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.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Do you offer different sealant colours?
Most of the time, yes. We’ll explain which colours are available.
Will there be a smell?
There can be a smell while the sealant cures. Ventilation helps.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
How to look after the new joints
Looking after new joints is easy:
- Ventilate the conservatory to cut condensation
- Keep conservatory gutters clear of leaves
- Keep harsh solvents off the silicone
- Look over the glazing joints once a year
On shower screens, wipe or squeegee after use and let the room air. That slows mould growth on the bead.
Drips or damp near a glazing joint shouldn’t be ignored. It may be sealant, or something else, and we’ll tell you which.
What affects the quote in Gosmore
Every job gets its own quote. These are the things that affect it:
- Whether there’s mould to deal with
- Access and height
- The type of sealant required
- When we can work, for business premises
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
Asking for a quote
When you call or email, it’s useful to know:
- A few pictures by email, if you can
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- Roughly how big the job is
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
When to call us in Gosmore
The wrong sealant is a common cause. Some products do not bond well to glass, and acetoxy types can attack some frame materials.
Common reasons people contact us include:
- Failed joints on frameless glass
- Leaking glazing joints on a rooflight
- Silicone pulling away from the glass
- Conservatory leaks at frame and glazing joints
If you look after a building such as St Ippolyts Church of England Aided Primary School, its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- Whether all the old sealant comes out first
- Which colour the sealant will be
- What preparation is included
- Are they insured?