Hertfordshire · England
Walkern Glazing Silicone
Glazing silicone across Walkern and nearby, with old sealant always removed completely.
- Mouldy sealant around glass panels
- Split or lifting silicone on glass
- Glass-to-glass joints that have split
How we handle glazing silicone in Walkern
Glazing silicone is a maintenance item. Sun, rain and movement wear it down, and once it cracks, water follows. Resealing puts that right. If you have shower screens leaking along the wall or tray and stained, discoloured glazing silicone, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Walkern is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Walkern (SG2)
- Wider area
- Hertfordshire
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
After the cure time, these simple habits help:
- Clean glass with a mild cleaner and a soft cloth
- Keep air moving in the conservatory
- Do not use a blade near the sealant
- Inspect the sealant on glazing annually
Check the joints once a year. Catching a split early keeps the repair small, before water gets in.
Conservatory leaks rarely stay small. Water runs along frames and down walls so it’s best dealt with straight away.
FAQs for Walkern
Do you work for landlords with property near Stevenage station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Is Walkern within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you just put new silicone over the old?
Silicone does not stick to silicone, so a top-up soon lets water through. We cut out the old sealant first.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Are you fully insured?
Yes. We’re fully insured for domestic and commercial work.
Do you offer different sealant colours?
We will suggest a colour to suit the surroundings. The product needed can limit the range.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
What we can’t put right
A few problems are outside what sealant work can do:
- Condensation trapped between two panes
- Frames that have decayed or split
- A broken pane or roof panel
If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Surfaces we seal
- Rooflights
- Shower screens
- Glass-to-glass joints
- Conservatory frames
- Glass-to-frame joints
- Glass balustrade bases
How it works
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for most jobs. In a small place like Walkern, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree the joints to be done.
- Old sealant is removed from the glass and frame.
- The surfaces are cleaned with a suitable solvent.
- New glazing silicone goes in and is finished neatly.
- The joints are checked before we leave.
How to prepare
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
- Mention any leaks or damp you’ve noticed
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Related advice
What glazing silicone looks like in Walkern
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. With historic houses such as Aston Bury (about 2.9 miles south) nearby, there’s older building stock in the area around Walkern as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you look after a building such as Walkern Primary School, the mastic around its windows and doors needs looking after like any other building’s. Homes close to Parish Church of St Mary the Virgin include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Walkern is about 2 miles east of Stevenage, in Hertfordshire. We carry out glazing silicone for householders, landlords and businesses in Walkern, as part of our work across Hertfordshire. Walkern is one of 381 places in Hertfordshire we cover. We also work in London, around 29 miles away.
All of SG2 is covered for glazing silicone, from the main roads to the quietest streets. Local streets include High Street, Walchra Court and Yew Tree Close, and we cover them all. Other places close to Walkern include Aston End (2 miles south-west), Chells (2 miles west), St Nicholas (2 miles west), Stevenage (2 miles west) and Pin Green (3 miles west). Larger places within reach include St Albans (14 miles south-west), Bishop's Stortford (13 miles east), Welwyn Garden City (9 miles south), Harpenden (12 miles south-west), Hitchin (6 miles west) and Hoddesdon (12 miles south-east).
What’s near Walkern
Locally, jobs take us to homes and businesses close to The Nobel School and The Robin Hood Public House, among other places. The nearest railway station is Stevenage station, about 3.6 miles west of the centre. Well-known places in the area include Lister Hospital (3.6 miles west) and Stevenage Museum (3.3 miles west). Green spaces nearby include Pryor's Wood.
What happens if it’s left?
Fixing a leaking screen early protects what’s underneath. Water from a failed joint can soak into the floor before you notice. Around Walkern, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why choose Mr Mastic in Walkern
- Old sealant always removed completely
- Quality sealants from Arbo and Everbuild
- Sealant colour chosen to suit
- 180+ five-star Google reviews
See our cost guide or what customers say.
Can I do it myself?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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.
Places near Walkern
Other services in Walkern
Surface by surface
Glass-to-glass joints
Glass-to-glass joints depend entirely on the sealant. The bead needs to be tidy and fully bonded.
Conservatory frames
Frame-to-wall joints on a conservatory move with the weather. We reseal them with a sealant suited to the frame.
Signs you need glazing silicone in Walkern
Some conservatory leaks aren’t sealant at all: broken panels, roof problems and blocked gutters can all let water in. That’s why we trace the leak first.
These are the problems we are asked about most:
- Leaks where conservatory glass meets the frame
- Water running down inside the glass
- Black or yellowed silicone on glass joints
- Sealant that was laid over old silicone and failed
Letting a property close to Stevenage station? Then leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.
Comparing quotes
- How the surfaces are prepared before sealing
- Whether they seal over old material or remove it
- How much experience the applicator has
- The length of the guarantee