Buckinghamshire · England
Window Mastic in Wendover
Our applicators work in Wendover on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- Old mastic that has gone black or come away
- Whistling draughts around closed windows
- Mastic that has split away from the wall
How we handle window mastic in Wendover
Behind a thin line of old mastic there’s sometimes a deep void. Filling it with sealant alone leaves a joint that cannot move properly, so we fit backing rod to set the right depth. That way the new bead bonds to the frame and the wall only. We work on patio & French doors, uPVC windows and window sills, and people most often call us about rain getting in at the frame or under the sill and cold air getting in at the frame edge.
Many houses in smaller places like Wendover have conservatories, garden rooms or patio doors. Their glazing joints and frame seals are as much a part of the job as the windows, and any older timber or sash windows need a sealant that suits them.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- Wendover (HP22)
- Wider area
- Buckinghamshire
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How the job changes by surface
Aluminium frames
Coated aluminium needs a compatible sealant, and acetoxy silicones are not used, as they can attack some metals. Neutral-cure sealant is the safe choice.
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We’ll tell you if that’s what we find.
How the visit works
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the job takes anything from an hour or two to a full day, depending on how many frames there are for a typical job. In a smaller place like Wendover, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
How to prepare
- Try not to wet indoor joints just before the visit
- Mention any tricky access
- Keep children and pets away from the work area
How to get a quote
Need a quote? Please call 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
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Why act early in Wendover
Resealing frames is a short job: the visit takes a morning for a couple of windows and a door. Wait for damp to appear and there may be plaster and decorating to sort out too. Around Wendover, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- Sealant colour chosen to suit
- Homes, businesses and hotels
- Tidy, careful work
- You choose the colour before work begins
See our cost guide and our reviews.
FAQs for Wendover
Is Wendover within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do window mastic in Wendover?
Yes, Wendover is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures.
Can resealing stop a draught around my window?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we will tell you.
Is the work guaranteed?
Yes. All our work carries a 12-month guarantee, and we’re ARBOMaster approved applicators.
Do you have insurance?
Yes. We’re fully insured.
How many windows can you do in a day?
That depends on the number of frames, how they’re reached and the state of the old mastic. You’ll know the timing when we quote.
Do you work for landlords and businesses?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels in Wendover.
Landlord and commercial work in Wendover
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
Do you need window mastic in Wendover?
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. That’s what backing rod is for.
These are the problems we are asked about most:
- Water coming in at the bottom corners of a door
- White mastic on grey or black frames
- Old mastic that has gone black or come away
- Whistling draughts around closed windows
For landlords with property near Wendover station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Questions to ask before you book
- How the joint is cleaned and prepared
- Is VAT in the price?
- Which sealant they’ll use, and why
- How long the guarantee is
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- A door that needs adjusting, rehanging or new seals
- Penetrating damp from a failed cavity tray or render
- A frame that has rotted at the joint
If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Where we work in Wendover
- Patio & French doors
- Composite doors
- Timber windows & doors
- uPVC windows
- Aluminium frames
- Window sills
Wendover homes and the weather
With historic houses such as Cholesbury Manor House (about 3.9 miles east) nearby, there’s older building stock in the area around Wendover as well as newer homes. 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. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Parish 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 The John Hampden School? Then the mastic around its windows and doors needs looking after like any other building’s.
Wendover is about 5 miles south-east of Aylesbury, in Buckinghamshire. Jobs in Wendover get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Wendover is one of 263 places in Buckinghamshire we cover for window mastic. Oxford is on our list too, about 21 miles from Wendover.
All of HP22 is covered for window mastic, from the main roads to the quietest streets. If you need window mastic at a property on High Street, The Paddocks and Victory Road or anywhere close by, we can help. You’ll find Wendover on the A413 and B4009, so it’s easy for us to get to. Neighbouring places we cover for window mastic include Halton (1 mile north), Nash Lee (2 miles west), Chalkshire (2 miles west), Terrick (2 miles west) and Weston Turville (2 miles north-west). Further out, we also cover Aylesbury (5 miles north-west), High Wycombe (9 miles south), Chesham (7 miles south-east), Marlow (13 miles south), Amersham (9 miles south-east) and Beaconsfield (12 miles south).
Near you in Wendover
In Wendover, that means homes and buildings near John Colet School, Wendover House School and The Pack Horse Public House, among other places. There’s a railway station in Wendover itself: Wendover station. Well-known places in the area include Trenchard Museum (1.2 miles north-east) and Stoke Mandeville Hospital (3.4 miles north-west). For a walk, there’s Haddington Hill and Dancersend Nature Reserve.
Quotes for window mastic in Wendover
Your quote is based on your job. We take into account:
- Mould in or behind the old joints
- The product the joint needs
- How many areas need sealing
- The old material and how stubborn it is
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us.
Helping us quote
What to tell us when you ask for a quote:
- Photos by email, if that’s easy
- The problem you’ve noticed
- Whether it has been sealed before
- Where the job is, and your postcode
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, call 0345 464 0079 or send us an email.