Hampshire · England
Window & door mastic in St Mary Bourne, Hampshire
Mastic around window and door frames, sills and patio doors for St Mary Bourne, backed by a 12-month guarantee. Call for a quick quote.
- Untidy mastic left by window fitters
- Damp patches on the reveal after heavy rain
- Leaking joints at the ends of sills
How we handle window mastic in St Mary Bourne
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. Either or both can be done. We work on timber windows & doors, composite doors and patio & French doors, and people most often call us about damp patches on the reveal after heavy rain and whistling draughts around closed windows.
Around St Mary Bourne, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Whatever the size of the job, it’s backed by our one-year guarantee in St Mary Bourne and across Hampshire.
- Location
- St Mary Bourne (SP11)
- Region
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of window mastic
Your quote is based on your job. We take into account:
- How easy the joints are to reach
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
- The product the joint needs
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
What to tell us for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- Any access issues, like height or stairs
- The rough size of the job
- Where the job is, and your postcode
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will talk you through the work and give you a clear quote.
Nearby places to St Mary Bourne
Other services in St Mary Bourne
What we do, step by step
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take most of a day for a typical house, less for a few frames. Somewhere as small as St Mary Bourne, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
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Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Aftercare tips
So the new joints stay in good condition:
- Avoid harsh chemicals near the mastic
- Wash the frames with mild soapy water
- Look round the frames every year or so
- Clear any debris from frame drain holes
On timber frames, keep the paintwork in good order, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and a cold room gets colder. A new joint closes it up.
Landlords, agents and businesses in St Mary Bourne
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Do you need window mastic in St Mary Bourne?
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar never bonded as it should, so it comes away long before its time.
Signs it’s time to call us include:
- Gaps left after new windows were fitted
- Cold air getting in at the frame edge
- White mastic on grey or black frames
- Cracked or shrunken mastic around the frame
If you let a flat or house near Whitchurch (Hampshire) station, renewing tired window mastic between tenants heads off draught and damp complaints.
What your quote should include
- What product goes in the joint
- How hidden problems are handled
- Whether they’re fully insured
- Whether all the old sealant comes out first
Window mastic in St Mary Bourne: local notes
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St Peter, the joint between an old wall and a newer frame is generally the first place rain gets in. Managing a site like St Mary Bourne Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
St Mary Bourne is about 5 miles north-east of Andover, in Hampshire. Jobs in St Mary Bourne get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 683 places in Hampshire are on our list, from the larger towns to small villages. You can also see our page for Southampton, about 23 miles away.
We cover every part of SP11 for window mastic. You’ll find streets such as Spring Hill Lane, Springhill and Bells Meadow, and we cover them all. We also cover the places around St Mary Bourne: Binley (2 miles north), Wadwick (2 miles north-east), Hurstbourne Priors (3 miles south), Cole Henley (3 miles east) and Whitchurch (3 miles south-east). We also work in nearby towns such as Basingstoke (13 miles east), Winchester (14 miles south), Andover (5 miles south-west), Tadley (13 miles north-east), Hyde (13 miles south) and Popley (14 miles east).
Around St Mary Bourne
We work in homes and buildings around Coronation Arms, among other places. St Mary Bourne’s nearest station is Whitchurch (Hampshire) station, roughly 2.9 miles south-east. Other landmarks nearby include Finkley Down Farm Museum (3.2 miles south-west) and Andover War Memorial Hospital (4.9 miles south-west). For a walk, there’s Sidown Hill and Anton Lakes.
St Mary Bourne: your questions answered
Can you help a landlord with a rental near Whitchurch (Hampshire) station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can be quoted together. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Do you cover smaller places like St Mary Bourne?
Yes. St Mary Bourne is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work on first-floor windows?
Yes, if safe access is possible. For high or awkward windows, we’ll tell you what access is needed.
Are you fully insured?
Yes, we are fully insured for every job we do.
Can you do several jobs on one visit?
Of course. Doing several areas at once is usually more efficient.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
Do you have sealant for grey or black windows?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
What happens if it’s left?
Not every sealant suits a window. Interior caulk and bathroom silicone are not made for exterior frame joints. An exterior, low-modulus sealant stays flexible in sun and frost. Around St Mary Bourne, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why book with us
- One-year guarantee on every job
- Approved under the ARBOMaster scheme
- Trusted Arbo and Everbuild sealants
- Fully insured