Hertfordshire · England
Monkswood Glazing Silicone
Glazing joints in Monkswood need attention? We remove the old material, prepare the joints and seal them properly.
- Split or lifting silicone on glass
- Black or yellowed silicone on glass joints
- A quick top-up bead that didn’t last
Glazing silicone in Monkswood, done properly
Glazing joints need a sealant made for glass. Our applicators use neutral-cure glazing silicone that is suited to glass and the frame, finished with a neat, even bead. If you have a quick top-up bead that didn’t last and silicone pulling away from the glass, we can help.
Outdoor sealant needs dry, clean surfaces, so work on frames around Monkswood is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Our work is backed for twelve months.

- Where
- Monkswood (AL8, AL6, AL7)
- Wider area
- Hertfordshire
- Cover
- 12 months on all our work
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
We keep the work tidy and contained to the area we’re working on, so you can carry on as normal. Expect the work to take a few hours, depending on how many joints need doing, and we explain the cure time before we leave. Somewhere as small as Monkswood, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree the joints to be done.
- We cut away the failed silicone.
- The surfaces are cleaned with a suitable solvent.
- We apply and tool the new silicone.
- We inspect the work and test it where we can.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear quote.
Advice
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Rotten or badly damaged frames
- Structural problems with a conservatory roof
- Glass that needs replacing
If in doubt, ring 0345 464 0079 or email us and we will say what we think before you book.
Joints and surfaces we work on
- Conservatory frames
- Glass-to-frame joints
- Glass balustrade bases
- Rooflights
- Shower screens
- Glass-to-glass joints
Also in Monkswood
What the job involves on each surface
Glass-to-glass joints
Silicone joins glass panels in many frameless designs. We renew it with a clear or matching glazing silicone.
Conservatory frames
Frame joints face sun and rain all year. A fresh bead seals them again.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
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 fails, we can still redo it.
Questions from Monkswood
Is Monkswood in your area for glazing silicone?
Yes, Monkswood is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Will you come out to Monkswood?
Yes. Monkswood is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it possible to redo the silicone on a shower screen?
Yes. We cut out the old silicone and reseal the glass-to-wall and glass-to-tray joints.
Do you have insurance?
Yes. Full insurance covers our work.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We will tell you what we are using and why.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Is balustrade sealant something you do?
We can. We cut out the failed sealant and reseal the base joint with a suitable product.
Why deal with it now?
You do not need new glazing because the sealant has gone. If the glass and frame are sound, new silicone is often all it takes, and we will tell you if that is not the case. Older cottages and farmhouses around Monkswood can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is usually more efficient than separate visits. We will give you a clear price for the lot.
Why book with us
- Neat joints and a tidy finish
- Arbo and Everbuild products
- Approved under the ARBOMaster scheme
- Over 20 years’ experience
Take a look at our cost guide and our reviews.
When to call us in Monkswood
Sealant laid over old sealant does not last. Many failed joints we see have been topped up rather than cut out leaving a path for water.
The problems people usually mention when they call include:
- Sealant that was laid over old silicone and failed
- Glass-to-glass joints that have split
- Leaks where conservatory glass meets the frame
- Glazing silicone that has cracked or come away
In the older streets around The Parish Church of St John, the joint between an old wall and a newer frame is normally the first place rain gets in.
Before booking anyone
- Is VAT in the price?
- Whether they seal over old material or remove it
- How the colour is chosen
- When the joint can take water or movement
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Keep scrapers and blades away from the silicone
- Look over the glazing joints once a year
- Use gentle products around the joints
- Stick to mild cleaners on glass
Keep conservatory gutters clear, so water drains away from the joints. Overflowing gutters can cause leaks of their own.
Damp patches, drips and condensation along a joint are worth checking. It may be sealant, or something else and we will find out which.
What glazing silicone looks like in Monkswood
With historic houses such as Digswell House (about 0.1 miles south-west) nearby, there’s older building stock in the area around Monkswood as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Homerswood Primary and Nursery School, the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Welwyn North station change hands often, and glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Monkswood is about 2 miles north of Welwyn Garden City, in Hertfordshire. Our applicators cover glazing silicone for householders, landlords and businesses in Monkswood and the surrounding area. Our Hertfordshire coverage runs to 381 places, Monkswood among them. You can also see our page for London, roughly 23 miles from Monkswood.
Work in AL8, AL6 and AL7 is quoted and booked the same way as anywhere else. We cover properties on Digswell Park Road, Ingles and Uplands and the roads around them. Nearby, we also carry out glazing silicone in Welwyn (1 mile north-west), Ayot Green (1 mile south-west), Ayot St Peter (2 miles west), Pottersheath (2 miles north) and Rableyheath (2 miles north). We also work in nearby towns such as Watford (14 miles south-west), Hemel Hempstead (12 miles south-west), Stevenage (6 miles north), St Albans (7 miles south-west), Harpenden (6 miles west) and Hitchin (9 miles north).
What’s near Monkswood
In Monkswood, that means homes and buildings near Monk's Walk School, Danesbury Park and Hedgehog pub. Monkswood’s nearest station is Welwyn North station, about 0.6 miles north-east of the centre. Other landmarks nearby include Queen Elizabeth II Hospital (2.7 miles south) and Howard Centre (1.3 miles south). The countryside around Monkswood includes Tewin Orchard and Hopkyns Wood.
