Hertfordshire · England
Window Mastic in Buntingford
Window mastic in Buntingford from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- A bead that does not match the frame
- Rain getting in at the frame or under the sill
- Gaps between the frame and the inside reveal
When something else is needed
We’d rather tell you now than do work that won’t last, so these are the limits:
- Faulty window hardware
- Damp problems in the wall away from the window
- Rotten timber, which needs a joiner first
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
Surfaces we seal
- uPVC windows
- Window sills
- Composite doors
- Aluminium frames
- Patio & French doors
- Timber windows & doors
Window mastic in Buntingford, done properly
Every window and door frame has a gap around it, and mastic is what closes it. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We work on window sills, aluminium frames and patio & French doors, and people most often call us about mastic that has split away from the wall and gaps between the frame and the inside reveal.
In a smaller place like Buntingford, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. That’s hard on the mastic around frames and sills.
Every job comes with our one-year guarantee.
- Where
- Buntingford (SG9)
- Wider area
- Hertfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
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.
Landlord and commercial work in Buntingford
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
What the job involves on each surface
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that without cracking.
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. It comes out, deep gaps get backing rod and the joint is resealed.
Buntingford: your questions answered
Will you come out to Buntingford?
Yes, we do. Our work covers 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 window mastic in Buntingford guaranteed?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can I paint over the new sealant?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Why deal with it now?
Resealing frames is a short job: it takes a morning for a couple of windows and a door. Leave it until water is coming in and you may need plastering and decorating as well. Around Buntingford, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or drop us an email.
Why choose Mr Mastic in Buntingford
- Full insurance on every job
- An ARBOMaster approved applicator
- Every job guaranteed for a year
- Colour agreed with you before any work starts
See what affects the cost or our reviews.
Buntingford homes and the weather
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.
For site and facilities teams at buildings such as Millfield First and Nursery School, its window and door frames need their mastic kept sound, just like a home’s.
Buntingford is in Hertfordshire. Anywhere in SG9, our applicators can take on window mastic. Our Hertfordshire coverage runs to 381 places, Buntingford among them. We also work in Chelmsford, about 26 miles from Buntingford.
All of SG9 is within our area for window mastic. You’ll find streets such as Market Hill, Station Road and High Street, all of which we cover. Buntingford sits on or near the B1038, so getting to you is simple. Other places close to Buntingford include Layston (1 mile north-east), Aspenden (1 mile south), Westmill (1 mile south), Wyddial (1 mile north-east) and Chipping (2 miles north-west). Within a short drive, we also cover Stevenage (7 miles west), Bishop's Stortford (9 miles south-east), Welwyn Garden City (13 miles south-west), Hitchin (11 miles west), Hoddesdon (13 miles south) and Hertford (11 miles south).
Around Buntingford
Locally, jobs take us to homes and businesses close to Freman College and The Jolly Sailors pub, among other places. Nearby you will also find Anstey Hales Farm (3.7 miles north-east). Open spaces near Buntingford include Hawkins Wood.
More services for Buntingford
How it works
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it generally takes most of a day for a typical house, less for a few frames. For a job in Buntingford, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Mention any tricky access
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
How to get 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 will have a clear quote before any work starts.
Advice
When to call us in Buntingford
Older frames were often sealed with products that set hard. Once it has hardened, the frame’s movement tears it from the wall, leaving a hairline gap down one side.
Look out for any of the following:
- Rain getting in at the frame or under the sill
- Untidy mastic left by window fitters
- Leaking joints at the ends of sills
- Sealant in the wrong colour for the frame
If you live in an older home near Church of St Peter, the joint between an old wall and a newer frame is normally the first place rain gets in.
What your quote should include
- Which colour the sealant will be
- Whether the sealant suits the joint
- What happens if they find a problem under the old sealant
- What guarantee comes with the work