Hampshire · England
Laverstoke Window Mastic
Our applicators work in Laverstoke on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Cracked sealant at the sill ends
- Gaps between the frame and the inside reveal
- Hard, cracked sealant around windows
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
How we handle window mastic in Laverstoke
There are two joints on most windows. 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. If you are dealing with gaps left after new windows were fitted and cracked sealant at the sill ends, we can put it right, on composite doors, window sills and timber windows & doors alike.
Somewhere as small as Laverstoke, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
We stand behind the work with a 12-month guarantee, so you’re covered after we’ve gone.
- Place
- Laverstoke (RG28)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Laverstoke: your questions answered
Is Laverstoke in your area for window mastic?
Yes, Laverstoke is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing, and we’ll send you a clear quote.
I let a flat near Whitchurch (Hampshire) station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear quote.
Can new window sealant be painted?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Can you reach windows above the ground floor?
Usually, yes. We plan safe access before the job, so mention the height and anything in the way.
How do I get a quote for window mastic in Laverstoke?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Do the sealants smell?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
How the job changes by surface
Composite doors
Front doors take the weather head on. Those corners get the most care.
uPVC windows
The frame is cleaned with a product that will not harm the plastic, then the sealant goes in between frame and wall.
What happens if it’s left?
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. Older cottages and farmhouses around Laverstoke can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or send us an email and we will talk you through it.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Domestic, commercial and hotel work
- A choice of colours where the product allows
- Trusted Arbo and Everbuild sealants
Read what affects the cost or customer reviews.
Nearby places to Laverstoke
Other services in Laverstoke
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Use gentle cleaners on frames and sealant
- Keep drainage slots and sill grooves clear
- Look round the frames every year or so
- Keep paint off silicone joints
Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
Signs you need window mastic in Laverstoke
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
Look out for any of the following:
- Sealant in the wrong colour for the frame
- Leaking joints at the ends of sills
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
Homes close to St Nicholas' Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
- What happens if the job turns out different
- What product goes in the joint
Window mastic in Laverstoke: local notes
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.
For site and facilities teams at buildings such as Testbourne Community School, the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Whitchurch (Hampshire) station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Laverstoke is about 8 miles east of Andover, in Hampshire. Every kind of property in Laverstoke is covered for window mastic, old or new, large or small. The work is guaranteed for a year. Our area takes in 683 places across Hampshire, from the larger towns to small villages. There’s also a page for Reading, roughly 20 miles from Laverstoke.
Postcode districts we cover here for window mastic: RG28. Window mastic is available to properties on Laverstoke Lane and Florence Portal Close. If you are just outside Laverstoke, we cover Freefolk (1 mile north-west), Wells-in-the-Field (1 mile west), Southington (1 mile north-east), Whitchurch (2 miles west) and Overton (2 miles north-east). Larger places within reach include Basingstoke (9 miles east), Winchester (12 miles south), Andover (8 miles west), Alton (15 miles east), Tadley (11 miles north-east) and Hook (15 miles east).
Local landmarks in Laverstoke
Laverstoke’s nearest station is Whitchurch (Hampshire) station, roughly 1.7 miles west of the centre.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for a few frames, or a day or more for a whole house and we leave things clean and tidy. In a small place like Laverstoke, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
- Tell us about any water getting in
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, ring 0345 464 0079 or send us an email.
Read more
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.