Hampshire · England
Red Post Bridge Window Mastic
Mastic around window and door frames, sills and patio doors in Red Post Bridge, with a one-year guarantee on every job. Ask us for a quote.
- Mastic that’s falling out in pieces
- White mastic on grey or black frames
- Mastic that has split away from the wall
How we handle window mastic in Red Post Bridge
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that can’t move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. If you have leaking joints at the ends of sills and draughts coming in around windows and doors, we can put it right, whatever the surface.
Homes in small places like Red Post Bridge often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
We stand behind the work with a 12-month guarantee.
- Place
- Red Post Bridge (SP11)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
The work is quick compared with the damage it prevents: it takes most of a day for a typical house, less for a few frames. Leave it until water is coming in and you may need plastering and decorating as well. Where a wall is exposed, as many are in small places like Red Post Bridge, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Why Red Post Bridge customers choose us
- We never seal over old sealant
- Anti-fungal sanitary silicone in wet areas
- One-year guarantee on every job
- We leave the area clean and tidy
Common questions in Red Post Bridge
Can you do window mastic in Red Post Bridge?
Yes, Red Post Bridge 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 will give you a clear quote.
I let a flat near Andover station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
How long will my window job take?
A handful of frames is a short visit. You’ll get a timescale with the quote.
How long should I leave it?
Cure times vary by product and the temperature. Before we leave, we’ll tell you the cure time.
Where are you based?
We’re based in Crawley, and we work across South East England, London and Scotland.
Can you reach windows above the ground floor?
Yes, where they can be reached safely. Let us know about access when you ask for a quote and we’ll plan for it.
What does window mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or send us an email and let us know what needs doing and where.
Does the work come with a guarantee?
Yes. All our work carries a 12-month guarantee, and we’re fully insured.
Red Post Bridge homes and the weather
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as John Hanson Community School, larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Red Post Bridge is about 2 miles west of Andover, in Hampshire. Wherever you are in the SP11 postcode area, our applicators can take on window mastic. Across Hampshire, we cover 683 places, Red Post Bridge among them. We also work in Southampton, around 21 miles away.
Work in SP11 works the same way as everywhere else we cover. If you need window mastic at a property on Newall Road, Andover Road and Red Post Lane or a nearby road, our applicators can take on the job. Nearby, we also carry out window mastic in Penton Corner (1 mile north), Weyhill (1 mile north-west), Penton Grafton (1 mile north), Penton Mewsey (2 miles north) and East Cholderton (2 miles west). We also work in nearby towns such as Winchester (14 miles south-east), Romsey (15 miles south), Hyde (13 miles south-east), Tidworth (6 miles north-west), Weeke (13 miles south-east) and Stanmore (14 miles south-east).
What’s near Red Post Bridge
We work in homes and buildings around The Black Swan Public House and the streets around them. For rail, the closest station is Andover station, roughly 1.9 miles east. A little further out are Andover Museum (2.6 miles east) and Andover War Memorial Hospital (2 miles north-east). The countryside around Red Post Bridge includes Mill Lake and Anton Lakes.
How the visit 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. In a small place like Red Post Bridge, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Clear items away from the joints we’re working on
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved and give you a clear quote.
Related advice
Do you need window mastic in Red Post Bridge?
Mastic ages in the weather. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
It’s worth asking for a quote if you see:
- Mastic that has split away from the wall
- Cracked sealant at the sill ends
- Water coming in at the bottom corners of a door
- Draughty joints inside around the window
For landlords with property near Andover station, renewing tired window mastic between tenants heads off draught and damp complaints.
Comparing quotes
- Which sealant they’ll use, and why
- How hidden problems are handled
- How the surfaces are prepared before sealing
- What the quote includes, VAT included or not
Landlord and commercial work in Red Post Bridge
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Also near Red Post Bridge
Also in Red Post Bridge
What affects the cost of window mastic
Call for a quick quote. What matters most is:
- Which sealant suits the joint
- Working hours on commercial sites
- The amount of work
- The number of rooms or windows
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What we need to know
There’s no need for technical detail. Just tell us:
- Any access issues, like height or stairs
- A few photos by email, if you can
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.
How the job changes by surface
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. We pay most attention there.
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the new bead is laid against the frame and the wall.
Honest limits
A few problems are outside what sealant work can do:
- Draughts through the window seals rather than the frame
- A frame that has rotted at the joint
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Timber windows & doors
- Patio & French doors
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows