Hertfordshire · England
Glazing Silicone in Whempstead
Glazing silicone for Whempstead, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Split or lifting silicone on glass
- Cracked silicone between glass panels
- Mouldy sealant around glass panels
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes anything from an hour or two to most of a day, depending on the size of the job, and the area is left clean. For a village or hamlet like Whempstead, 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 look at the glazing and agree which joints need resealing.
- 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.
Getting ready for the visit
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
- Keep children and pets away from the work area
Ask for a quote
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before we start.
Related advice
About our glazing silicone in Whempstead
Glass replacement isn’t something we do, and misting between panes means a failed sealed unit. What we do is the silicone around the glass and that is often where the water gets in. If you have black or yellowed silicone on glass joints and leaking glazing joints on a rooflight, we can help, whatever the surface.
Homes in small places like Whempstead often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Location
- Whempstead (SG12)
- Region
- Hertfordshire
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Whempstead
Is Whempstead within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is Whempstead in your area for glazing silicone?
Yes. Our work covers London and the South East, and Whempstead is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do you replace glass?
No. We renew the sealant. A glazier replaces glass and units.
When is the sealant fully cured?
Cure times vary by product and the conditions. Before we leave, we will tell you the cure time.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Are you insured?
Yes. Full insurance covers our work.
Towns and villages near Whempstead
More services for Whempstead
Surface by surface
Glass-to-glass joints
Frameless glass corners and panels are joined with silicone. We reseal with a suitable glazing silicone.
Shower screens
Silicone holds the water in on frameless screens. We renew it without marking the glass.
What we are called out for in Whempstead
Using a sealant not made for glass causes many failures. Not every silicone sticks properly to glass and vinegar-smelling acetoxy silicone can attack some metals.
Common reasons people contact us include:
- Mouldy sealant around glass panels
- Silicone pulling away from the glass
- Failed joints on frameless glass
- Sealant that was laid over old silicone and failed
If you let a flat or house near Watton-At-Stone station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.
What your quote should include
- What happens if they find a problem under the old sealant
- Whether they’re fully insured
- When the joint can take water or movement
- How the colour is chosen
Work for landlords, hotels and businesses
Landlords and agents in Whempstead can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
Windows and doors in Whempstead
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Aston Bury (about 2.6 miles west) are a reminder that the area around Whempstead has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For an older house near a landmark such as Parish Church of All Saints, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Schools such as Munden Church of England Voluntary Controlled Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Whempstead is about 5 miles south-east of Stevenage, in Hertfordshire. Every kind of property in Whempstead is covered for glazing silicone, old or new, large or small. Every job comes with our 12-month guarantee. Across Hertfordshire, we cover 381 places, and Whempstead is one of them. For nearby work, see our London page, about 26 miles away.
Here we cover the SG12 postcode area for glazing silicone. If you need glazing silicone at a property on Whempstead Road and Mill Lane or anywhere close by, we can help. We also cover the places around Whempstead: Dane End (1 mile east), Burn's Green (1 mile north-west), Sacombe (1 mile south-east), Haultwick (2 miles north-east) and Sacombe Green (2 miles south-east). Larger places within reach include Stevenage (5 miles north-west), St Albans (13 miles south-west), Bishop's Stortford (10 miles east), Welwyn Garden City (7 miles south-west), Harpenden (12 miles west) and Hitchin (9 miles north-west).
What’s near Whempstead
The nearest railway station is Watton-At-Stone station, about 1.8 miles south-west. Well-known places in the area include Hertford County Hospital (5.4 miles south) and Benington Castle (2 miles north-west). For a walk, there’s Astonbury Wood.
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Do not leave a drip for the next storm
- Look over the glazing joints once a year
- Use gentle products around the joints
- Do not use a blade near the sealant
Gentle products are best near the sealant. Strong solvents can soften or mark it.
A leaking shower screen may not show at first. It can damage the floor or the ceiling below before you spot it.
Leave it or put it right?
Topping up old silicone can look like a fix, but new silicone will not bond to old and water soon finds its way back. A proper reseal is the lasting answer. Where a wall is exposed, as many are in small places like Whempstead, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Whempstead
- A choice of colours where the product allows
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- A 12-month guarantee on all work
Read how sealant jobs are priced and our reviews.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.