Hampshire · England
Window & door mastic in Bursledon, Hampshire
Mastic around window and door frames, sills and patio doors for homes and businesses in Bursledon and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Hard, cracked sealant around windows
- Cracked internal joints between frame and plaster
- Old mastic that has gone black or come away
How we handle window mastic in Bursledon
Over two decades of sealing frames has taught us which products suit which walls. We are fully insured ARBOMaster approved applicators, and every job is covered by a 12-month guarantee. Typical jobs include untidy mastic left by window fitters and sealant in the wrong colour for the frame, across window sills, aluminium frames and composite doors.
Around Bursledon, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
A one-year guarantee comes as standard, so you are covered after we’ve gone.
- Place
- Bursledon (SO31)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for window mastic
We do not publish a price list. What we look at:
- The number and length of the joints
- The type of sealant required
- Access and height
- Any mould that needs treating
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
What we need to know
To make quoting easier, please include:
- What’s wrong with the joints now
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
- How we’d reach the joints
For window mastic in Bursledon, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.
What window mastic looks like in Bursledon
Bursledon is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. With historic houses such as Medieval Merchant's House (about 4 miles west) nearby, there’s older building stock in the area around Bursledon 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 is traditional sand mastic.
Managing a site like Bursledon Church of England Infant School? Then its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near St Paul’s Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Bursledon is about 2 miles south of Hedge End, in Hampshire. We carry out window mastic for homeowners, landlords and businesses in Bursledon and nearby, as part of our work across Hampshire. Across Hampshire, we cover 683 places, and Bursledon is one of them.
All of SO31 is covered for window mastic, from the main roads to the quietest streets. Whether your property is on High Street, Station Road and School Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for window mastic include Lowford (1 mile north-west), Old Netley (1 mile west), Butlocks Heath (1 mile south-west), Hound (1 mile south-west) and Netley (2 miles south-west). Within a short drive, we also cover Winchester (12 miles north), Gosport (9 miles south-east), Havant (14 miles east), Eastleigh (6 miles north), Fareham (6 miles south-east) and Horndean (13 miles east).
Around Bursledon
Around Bursledon, our work takes us to homes and buildings near The Hamble School, Grove Park Business and Enterprise College and Westwood Woodland Park, among other places. The nearest railway station is Bursledon station, roughly 0.5 miles south-east. Other landmarks nearby include Bursledon Brickworks Industrial Museum (1.1 miles east) and Coldeast (1.8 miles south-east). Open spaces near Bursledon include Netley Common.
How it works
You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes a morning for a couple of windows and a door in most cases. For a job in Bursledon, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Try not to wet indoor joints just before the visit
- Let us know about parking restrictions
- On commercial sites, let us know about site rules
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.
Advice
How the job changes by surface
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain can’t run into the wall.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Also near Bursledon
What else we do in Bursledon
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Don’t use solvent cleaners on the joint
- Paint up to the joint, not over it
- Walk round the house once a year and look at the joints
- Do not aim a pressure washer at the joints
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
Why act early in Bursledon
Choosing the product is half the job. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. In an older home around Bursledon, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first.
What you get with us
- Colour agreed with you before we start
- An ARBOMaster approved applicator
- Domestic, commercial and hotel work
- Anti-fungal sanitary silicone in wet areas
Read what affects the cost or what customers say.
What we’re called out for in Bursledon
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
Keep an eye out for any of the following:
- Black, perished sealant on frames
- Gaps where the sill meets the wall
- Gaps left after new windows were fitted
- White mastic on grey or black frames
Rented homes near Bursledon station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Comparing quotes
- When the joint can take water or movement
- What guarantee comes with the work
- What insurance they hold
- Who does the work, and how experienced they are
Honest limits
To be straight with you, there are a few things sealant will not fix:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Rotten timber, which needs a joiner first
- A sash or casement that will not close properly
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Joints and surfaces we work on
- Window sills
- Aluminium frames
- uPVC windows
- Composite doors
- Patio & French doors
- Timber windows & doors
Bursledon questions
Can you help a landlord with a rental near Bursledon station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Is Bursledon 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.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll tell you what we are using.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Will resealing my frames help with draughts?
In many cases. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.
Can new window sealant be painted?
Most silicone can’t be painted. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.