Hertfordshire · England
Great Amwell Glazing Silicone
Problem with your glazing joints in Great Amwell? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Conservatory leaks at frame and glazing joints
- Glass-to-glass joints that have split
- Stained, discoloured glazing silicone
How we quote for glazing silicone
We quote each job individually. These are the things that affect it:
- Access and height
- Any working-time requirements on site
- The amount of work
- The number of rooms or windows
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Asking for a quote
To help us quote quickly, let us know:
- What’s wrong with the joints now
- The type of property
- The address or postcode of the job
- A few photos by email, if you can
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.
About our glazing silicone in Great Amwell
Conservatory leaks often start at a sealant joint, where glass meets frame or frame meets wall. We trace the leak to the joint and reseal it, and if it’s something sealant can’t fix, we will tell you. We work on glass balustrade bases, rooflights and glass-to-glass joints, and people most often call us about black or yellowed silicone on glass joints and water tracking down the inner face of the glass.
Somewhere as small as Great Amwell, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Great Amwell (SG12)
- Wider area
- Hertfordshire
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How the job changes by surface
Glass-to-frame joints
The sealant must stick to glass and frame alike. We choose a product that suits both.
Conservatory frames
Conservatory frame joints are a common source of leaks. We cut out the old sealant and reseal.
What we do, step by step
Before we leave, we go over the finished joints with you. The visit itself normally takes a few hours for most jobs, depending on the size of the job. In a small place like Great Amwell, access is normally 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.
- We cut away the failed silicone.
- The surfaces are cleaned with a suitable solvent.
- New glazing silicone goes in and is finished neatly.
- We inspect the work and test it where we can.
Before we arrive
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- Mention if the joints have been sealed before
Get a quote
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
Related advice
FAQs for Great Amwell
Do you work for landlords with property near St Margarets (Herts) station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Will you come out to Great Amwell?
Yes, Great Amwell is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Can you replace a misted double-glazed unit?
No. We renew the sealant. A glazier replaces glass and units.
How long will you be here?
That depends on the amount of work, but as a guide it takes a few hours, depending on how many joints need doing. We’ll tell you when we quote.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
Great Amwell homes and the weather
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as Presdales School, its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near St Margarets (Herts) station, glazing joints are worth checking at the end of a tenancy, before a small leak grows. For an older house near a landmark such as Parish Church of St John the Baptist, the joint between an old wall and a newer frame is generally the first place rain gets in.
Great Amwell is about 1 mile south-east of Ware, in Hertfordshire. From the centre of Great Amwell to the outskirts, we cover glazing silicone for every kind of property. 381 places in Hertfordshire are on our list, large and small. For nearby work, see our London page (21 miles or so).
Postcode districts we cover here for glazing silicone: SG12. Whether your property is on Church Path, Amwell Hill and Madgeways Lane or anywhere close by, we can help. We also cover St Margarets (1 mile south-east), Hailey (1 mile south), Little Amwell (1 mile south-west), Rush Green (1 mile west) and Stanstead Abbotts (1 mile south-east). Within a short drive, we also cover Stevenage (11 miles north-west), St Albans (14 miles west), Bishop's Stortford (9 miles north-east), Welwyn Garden City (8 miles west), Harpenden (14 miles west) and Hitchin (15 miles north-west).
Around Great Amwell
Typical jobs here are in homes near Hertford Regional College and Jolly Fisherman Public House and the streets around them. The nearest railway station is St Margarets (Herts) station, roughly 0.9 miles south-east of the centre. A little further out are Museum of Street Lighting (under half a mile north) and Barrowfield (1.4 miles west). Not far away are Amwell Quarry.
Why it’s worth doing now in Great Amwell
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. In a small place like Great Amwell, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why choose Mr Mastic in Great Amwell
- Sealant colour chosen to suit
- ARBOMaster approved applicator
- Over 20 years’ experience
- Anti-fungal sanitary silicone in wet areas
Read how sealant jobs are priced or our reviews.
What we cannot put right
To be straight with you, there are a few things sealant will not fix:
- Misting between the panes of a double-glazed unit (a failed unit for a glazier)
- Frames that have decayed or split
- Structural problems with a conservatory roof
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Conservatory frames
- Shower screens
- Glass balustrade bases
- Glass-to-frame joints
- Glass-to-glass joints
- Rooflights
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
For anyone letting property in or around Great Amwell, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Towns and villages near Great Amwell
Also in Great Amwell
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.