Hertfordshire · England
Graveley Glazing Silicone
Professional glazing silicone in and around Graveley, with every bit of old sealant taken out first and a 12-month guarantee.
- Stained, discoloured glazing silicone
- Glazing silicone that has cracked or come away
- Leaking glazing joints on a rooflight
Glazing silicone in Graveley
We do not replace glass and a misted double-glazed unit needs a glazier. What we do is the silicone around the glass and that’s often where the water gets in. We work on rooflights, glass-to-glass joints and glass balustrade bases, and common reasons people get in touch are stained, discoloured glazing silicone and silicone pulling away from the glass.
Mastic can only go onto a dry, clean joint, so window work in Graveley is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Place
- Graveley (SG4)
- Region
- Hertfordshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid strong solvents on or near the sealant
- Keep air moving in the conservatory
- Keep conservatory gutters clear of leaves
- Get a new leak looked at quickly
Keep the new joints dry for as long as we advise. From then on, a mild glass cleaner is all it needs.
Don’t leave lifting or mouldy silicone on glazing. Peeling silicone lets water in behind and the leak gets worse.
Should I try it myself first?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
What glazing silicone looks like in Graveley
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. Historic houses like Knebworth House (about 4.4 miles south) are a reminder that the area around Graveley has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you live in an older home near Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in. Managing a site like Graveley Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Graveley is about 2 miles north-west of Stevenage, in Hertfordshire. For glazing silicone in and around Graveley, it’s easy to get a quote: please ring 0345 464 0079 or email us. We are based in Crawley and cover Hertfordshire, Graveley included. Graveley is one of 381 towns and villages in Hertfordshire where we work. We also work in London, around 31 miles away.
Our applicators cover all of the SG4 postcode area for glazing silicone. If you need glazing silicone at a property on High Street, Oak Lane and Ashwell Close or a nearby road, we can help. Neighbouring places we cover for glazing silicone include Todd's Green (1 mile south-west), Great Wymondley (1 mile north-west), Little Wymondley (1 mile west), Titmore Green (1 mile south-west) and Lower Titmore Green (1 mile south-west). Within a short drive, we also cover St Albans (14 miles south), Welwyn Garden City (10 miles south), Harpenden (10 miles south-west), Hitchin (3 miles west), Hoddesdon (15 miles south-east) and Hatfield (12 miles south).
Near you in Graveley
Around Graveley, our work takes us to homes and buildings near Waggon And Horses Public House, Church of Saint Nicholas and The John Henry Newman School. The closest station to Graveley is Stevenage station, about 2.4 miles south of the centre. Well-known places in the area include Wymondley Castle (1.1 miles west) and Stevenage Museum (2.4 miles south). Green spaces nearby include Purwell Ninesprings.
FAQs for Graveley
Do you cover Graveley for glazing silicone?
Yes. We work across London and the South East, and Graveley is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear quote.
Do you cover smaller places like Graveley?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Will resealing stop my conservatory leaking?
It depends on the cause. Failed glazing and frame joints can be resealed but roof and panel problems need another trade.
Is a special sealant needed for glass?
A glazing-grade silicone is best. We use neutral-cure glazing silicone and anti-fungal silicone in wet areas.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Can you match the sealant colour?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Why it’s worth doing now in Graveley
You don’t need new glazing because the sealant has gone. Sound glass and frames generally just need resealing, and we will tell you if that is not the case. Where a wall is exposed, as many are in small places like Graveley, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email and we’ll talk you through it.
What you get with us
- 180+ five-star Google reviews
- More than 20 years in sealant work
- Domestic, commercial and hotel work
- White, clear, grey or another colour, product permitting
Take a look at what affects the cost and our reviews.
What we are called out for in Graveley
Shower screen silicone gets wet every day. Mould grows into the bead and the joint starts to lift.
The problems people usually mention when they call are:
- Leaks from the base of a shower screen
- Sealant that was laid over old silicone and failed
- Drips on the inside of a conservatory window
- Leaks where conservatory glass meets the frame
If you let a flat or house near Stevenage station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
What your quote should include
- Is the old sealant removed completely?
- How the surfaces are prepared before sealing
- How hidden problems are handled
- Are they insured?
What the job involves on each surface
Glass-to-glass joints
These joints are on show, so a straight, even finish matters.
Glass-to-frame joints
Old sealant is removed carefully from the glass and reseal with glazing silicone.
How the visit works
You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the work takes anything from an hour or two to most of a day, depending on the size of the job for a typical job. For a village or hamlet like Graveley, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip 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.
- A neutral-cure glazing silicone is applied and tooled.
- We check the finished joints and test with water where it’s safe.
Getting ready for the visit
- Tell us if parking is tricky
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
How to get a quote
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
Advice
Places near Graveley
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What affects the quote in Graveley
Jobs vary more than people expect. The main factors:
- How much old sealant there is and how hard it is to remove
- Access and height
- The product the joint needs
- How many areas need sealing
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Helping us quote
There’s no need for technical detail. Just tell us:
- The rough size of the job
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.