Hampshire · England
Window & door mastic in Aldershot, Hampshire
Window mastic across Aldershot and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- A bead that doesn’t match the frame
- Old mastic that has gone black or come away
- Cracked sealant at the sill ends
Window mastic in Aldershot
There are two joints on most windows. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. We work on window sills, timber windows & doors and aluminium frames, and people most often call us about gaps between the frame and the inside reveal and untidy mastic left by window fitters.
In a town like Aldershot, the windows on the most exposed side of a house take the brunt of the rain, and that’s usually where the sealant gives up first. It’s worth looking at every frame, not just the one that leaks.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Location
- Aldershot (GU11, GU12)
- Region
- Hampshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Aldershot
Every job gets its own quote. These are the things that affect it:
- Access and height
- Which sealant suits the joint
- Any mould that needs treating
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
What we need to know
There’s no need for technical detail. Just tell us:
- Photos by email, if that’s easy
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.
Surface by surface
Window sills
Every drop off the glass ends up on the sill, so the joints at each end and underneath matter. Each is cleaned out and resealed.
uPVC windows
uPVC expands and contracts noticeably with temperature, so we use a flexible, low-modulus sealant. We match white, brown, anthracite grey and black frames.
Common problems we fix in Aldershot
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, and a gap filled solid cannot flex. Backing rod sets the right depth.
If you can see any of these, it’s time to have the joints looked at:
- Black, perished sealant on frames
- Cracked internal joints between frame and plaster
- Cracked sealant at the sill ends
- Cracked or shrunken mastic around the frame
Homes close to Church of the Holy Trinity include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in.
Comparing quotes
- Whether the sealant suits the joint
- Who turns up on the day
- How long to leave it before use
- Which colour the sealant will be
How the visit works
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes most of a day for a typical house, less for a few frames, and the area is left clean. A visit in Aldershot needs access to the work and a place to park close by. If the job is outside, mention gates, side access and anything above ground floor.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Preparing for the visit
- Let us know about parking restrictions
- Try not to wet indoor joints just before the visit
- Clear the area around the work
How to get a quote
We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or drop us an email with the details.
Related advice
Questions from Aldershot
Is there a guarantee on window mastic in Aldershot?
Every job comes with our one-year guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Do you cover Aldershot for window mastic?
Yes, Aldershot is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Can you do the inside joint as well?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
How long will my window job take?
Allow anything from an hour or two to a full day, depending on how many frames there are. Access and how stubborn the old mastic is affect the time most.
Can you match the sealant to my frames?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Can resealing stop a draught around my window?
Often, yes. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
Why act early in Aldershot
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. Proper resealing starts with removing the old joint. Gaps in sealant and mould in the bead never get better on their own, and in a busy household in Aldershot they spread with every shower and every downpour. Now is the easy time to put it right.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why Aldershot clients choose us
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
- Full insurance on every job
- Colour agreed with you before we start
Read our cost guide or customer reviews.
What window mastic looks like in Aldershot
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Farnham Castle (about 2.7 miles south-west) are a reminder that the area around Aldershot 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.
If you let a flat or house near Aldershot station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. For site and facilities teams at buildings such as Talavera Junior School, the mastic around its windows and doors needs looking after like any other building’s.
Aldershot is about 8 miles west of Guildford, in Hampshire. Across the GU11 area, our applicators can take on window mastic. Aldershot is one of 683 places in Hampshire we cover for window mastic. There’s also a page for Reading, roughly 17 miles from Aldershot.
Here we cover the GU11 and GU12 postcode area for window mastic. If you need window mastic at a property on Station Road, East Station Road and High Street or anywhere close by, our applicators can take on the job. Aldershot is on the A323 and A325, so it’s easy for us to get to. If you’re just outside Aldershot, we cover Weybourne (1 mile south-west), Badshot Lea (1 mile south), Heath End (1 mile south-west), Tongham (1 mile south-east) and Hale (2 miles south-west). Larger places within reach include Basingstoke (15 miles west), Farnborough (3 miles north), Fleet (4 miles north-west), Alton (11 miles south-west), Yateley (7 miles north-west) and Bordon (10 miles south-west).
What’s near Aldershot
We work in homes and buildings around All Hallows Catholic School, Prince Consort's Library and Princes Gardens and the streets around them. Aldershot has its own railway station: Aldershot station. A little further out are Royal Army Dental Corps Historical Museum (1.6 miles north) and Farnham Castle (2.7 miles south-west). Not far away are Claycart Hill and Rowhill Nature Reserve.
For landlords and businesses
If you manage several properties in or around Aldershot, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
More services for Aldershot
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.