Southampton · England
Window & door mastic in Highfield, Southampton
Mastic around window and door frames, sills and patio doors for homes and businesses in Highfield and across Southampton. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps left after new windows were fitted
- Draughty joints inside around the window
- Cracked sealant at the sill ends
Landlord and commercial work in Highfield
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
About our window mastic in Highfield
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. We seal one or both, depending on what’s needed. If you have old mastic that has gone black or come away and cracked or shrunken mastic around the frame, we can help.
In smaller places like Highfield, 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.
All of our work is guaranteed for twelve months.
- Location
- Highfield (SO17, SO16, SO14)
- Region
- Southampton
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
FAQs for Highfield
Does living near the coast affect window mastic in Highfield?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are usually the first to need attention.
Can you help a landlord with a rental near St Denys station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Are you insured?
Yes. Full insurance covers our work.
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.
Can new window sealant be painted?
It depends on the sealant. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before any work starts.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
How much does window mastic cost in Highfield?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Signs you need window mastic in Highfield
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:
- Damp patches on the reveal after heavy rain
- Cold air getting in at the frame edge
- Cracked or shrunken mastic around the frame
- A bead that does not match the frame
If you let a flat or house near St Denys station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What your quote should include
- What product goes in the joint
- Whether VAT is included
- Which colour the sealant will be
- How long to leave it before use
Window mastic in Highfield: local notes
Highfield is within about 3 miles of 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. Historic houses like South Stoneham House (about 1.1 miles north-east) are a reminder that the area around Highfield has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Highfield Church of England Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as Highfield Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Highfield is about 1 mile north of Southampton, in Southampton. Highfield gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Highfield is one of 40 towns and villages in Southampton we cover for window mastic.
Work in SO17, SO16 and SO14 works the same way as everywhere else we cover. You will find streets such as Winn Road, Nile Road and The Avenue, and we cover them all. Main roads around Highfield include the A3035, which makes travel easy. Other places close to Highfield include Bassett (1 mile north-west), Shirley (2 miles west), Lordswood (2 miles north-west), Freemantle (2 miles south-west) and Coxford (2 miles west). Within a short drive, we also cover Thornhill (3 miles south-east), Harefield (3 miles east), Sholing (3 miles south-east), Woolston (3 miles south), Eling (4 miles west) and Rownhams (3 miles north-west).
Around Highfield
In Highfield, that means homes and buildings near Saint George Catholic Voluntary Aided College Southampton, Richard Taunton Sixth Form College and The Cowherds Inn. For rail, the closest station is St Denys station, roughly 0.8 miles south-east of the centre. Well-known places in the area include Royal South Hants Hospital (1.2 miles south) and Marlands Shopping Centre (1.7 miles south). The countryside around Highfield includes Netley Common.
How the visit works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a morning for a couple of windows and a door, including the tidy-up. For a job in Highfield, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- 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.
Before we arrive
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Tell us about any water getting in
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Related advice
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Wipe condensation off the frames
- Wash the frames with mild soapy water
- Don’t use solvent cleaners on the joint
- Keep timber frames painted
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just call 0345 464 0079 or email us.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Damp coming through the wall itself rather than the frame joint
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before booking.
What we seal
- Window sills
- Composite doors
- Timber windows & doors
- Aluminium frames
- Patio & French doors
- uPVC windows
What the job involves on each surface
Patio & French doors
Not every patio door leak is a mastic problem: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
Composite doors
Draughts round the door leaf normally come from worn seals or adjustment, not the mastic. We seal the frame and let you know about anything else.
What happens if it’s left?
Redecorating is a good moment to renew the mastic. Fresh joints finish the job neatly. Homes in smaller places like Highfield can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Commercial jobs are quoted on the same basis as homes: how much there is to do, 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 us?
- Any old sealant cut out fully, not covered over
- Anti-fungal silicone where joints get wet
- Every job guaranteed for a year
- An ARBOMaster approved applicator
Take a look at what affects the cost and customer reviews.