Hampshire · England
Window & door mastic in Whitchurch, Hampshire
We cover Whitchurch for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- Gaps between the frame and the inside reveal
- Gaps where the sill meets the wall
- White mastic on grey or black frames
What happens if it’s left?
A quick bead over the top of old mastic looks like an easy fix, but new sealant can’t bond to old, crumbling mastic. It peels before long, and water still gets in behind. The old mastic has to come out. In an older home around Whitchurch, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
Why book with us
- A sealant colour to suit the surroundings
- 20+ years of sealant experience
- Homes, businesses and hotels
- Trusted Arbo and Everbuild sealants
Take a look at our cost guide or what customers say.
How we handle window mastic in Whitchurch
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that can’t flex, so deep gaps get backing rod first. The sealant then grips the two sides it should. If you have water coming in at the bottom corners of a door and mastic that’s falling out in pieces, we can put it right, whatever the surface.
In smaller places like Whitchurch, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
Our work is backed for twelve months.
- Location
- Whitchurch (RG28)
- Region
- Hampshire
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Whitchurch homes and the weather
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.
For site and facilities teams at buildings such as Whitchurch Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Whitchurch (Hampshire) station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Whitchurch is about 6 miles east of Andover, in Hampshire. Homes, rented property, offices and hotels in Whitchurch is covered for window mastic. Every job comes with our one-year guarantee. Whitchurch is one of 683 towns and villages in Hampshire we cover. There’s also a page for Southampton, about 22 miles away.
Postcode districts we cover here for window mastic: RG28. Whether your property is on London Road, Station Road and London Street or anywhere close by, we can help. With the B3400 close by, Whitchurch is easy for our applicators to reach. Close by, we work in Wells-in-the-Field (1 mile east), Freefolk (1 mile east), Cole Henley (2 miles north), Firgo (2 miles south) and Hurstbourne Priors (2 miles south-west). Further out, we also cover Basingstoke (10 miles east), Winchester (12 miles south), Andover (6 miles west), Tadley (12 miles north-east), Hyde (11 miles south) and Popley (12 miles east).
Landmarks near Whitchurch
We work in homes and buildings around The Red House Public House and Testbourne Community School. For rail, the closest station is Whitchurch (Hampshire) station, about 0.5 miles north.
Nearby places to Whitchurch
Other services in Whitchurch
Surface by surface
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We will tell you which suits your home.
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
If you are 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 fails, we can still redo it.
Signs you need window mastic in Whitchurch
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
The problems people usually mention when they call include:
- Gaps left after new windows were fitted
- Black, perished sealant on frames
- Whistling draughts around closed windows
- Leaking joints at the ends of sills
In the older streets around Church of All Hallows, the joint between an old wall and a newer frame is generally the first place rain gets in.
Questions to ask before booking
- Whether they’re fully insured
- Who does the work, and how experienced they are
- Which sealant they’ll use, and why
- Is the old sealant removed completely?
How we quote for window mastic
For a quick quote, just ask. What matters most is:
- Whether there’s mould to deal with
- The product the joint needs
- Working hours on commercial sites
- Access and height
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
What to tell us when you ask for a quote:
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
- What’s wrong with the joints now
- The rough size of the job
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.
How to look after the new joints
Aftercare is simple:
- Clean frames with a soft cloth and soapy water
- Clear any debris from frame drain holes
- Avoid blasting the frames with a pressure washer
- Keep solvents and bleach off the sealant
A yearly look round the frames is enough. Small splits are simple to catch before they leak.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
The process
We work through the job in order: protect, prepare, seal, tidy. Typically it takes anything from an hour or two to a full day, depending on how many frames there are. A visit to Whitchurch is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
Getting a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and give you a clear price.
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FAQs for Whitchurch
Is Whitchurch within the area you cover?
Yes. Whitchurch 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.
Can you do window mastic in Whitchurch?
Yes, Whitchurch is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Can you quote for more than one area?
Yes. Several rooms, windows or areas can go on one quote.
Do you work on first-floor windows?
Yes, where they can be reached safely. Let us know about access when you ask for a quote and we will plan for it.
Can landlords and businesses book you?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Can resealing stop a draught around my window?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.