Hampshire · England
Window & door mastic in Hythe, Hampshire
Mastic around window and door frames, sills and patio doors for homes and businesses in Hythe and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Water coming in at the bottom corners of a door
- Cracked internal joints between frame and plaster
- Cracked sealant at the sill ends
About our window mastic in Hythe
Behind a thin line of old mastic there’s sometimes a deep void. Filling it with sealant alone leaves a joint that can’t move properly, so deep gaps get backing rod first. The sealant then grips the two sides it should. If you’re dealing with a bead that doesn’t match the frame and rain getting in at the frame or under the sill, we can help, on timber windows & doors, composite doors and patio & French doors alike.
Around Hythe, many houses have gained conservatories, French doors or replacement windows over time. Every addition brings more joints, each wearing at its own pace. Sills, frame heads and glazing joints are where leaks generally start.
You are covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or email us.
- Location
- Hythe (SO45)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
Window mastic in Hythe: local notes
Hythe is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Waterside Primary School, its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Church of St John, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For landlords with property near Southampton Town Quay station, renewing tired window mastic between tenants heads off draught and damp complaints.
Hythe is about 4 miles south of Southampton, in Hampshire. From the centre of Hythe to the outskirts, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Across Hampshire, we cover 683 places, Hythe among them.
Every address in SO45 is covered for window mastic. Window mastic is available to properties on High Street, Deerleap Close and Langdown Lawn and the roads around them. We also cover Dibden Purlieu (1 mile south-west), Dibden (1 mile west), Marchwood (3 miles north-west), The Hummicks (4 miles south-west) and Beaulieu (4 miles south-west). We also work in nearby towns such as Winchester (14 miles north), Gosport (12 miles east), Eastleigh (8 miles north), Fareham (9 miles east), Totton (6 miles north-west) and Chandler's Ford (9 miles north).
Around Hythe
Around Hythe, our work takes us to homes and buildings near Noadswood School, Testwood School and No.5 (The Lord Nelson Public House) and the streets around them. Hythe’s nearest station is Southampton Town Quay station, roughly 2.3 miles north of the centre. Other landmarks nearby include Netley Castle (2.1 miles north-east) and Westquay (2.9 miles north). Green spaces nearby include Mercury Marshes.
Why deal with it now?
A quick bead over the top of old mastic looks like an easy fix, but new sealant cannot bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. The old mastic has to come out. Gaps in sealant and mould in the bead never get better on their own, and in a busy home in Hythe they get worse with every use. Replacing the sealant now is the simplest fix.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
Why Hythe clients choose us
- Homes, businesses and hotels
- Quality sealants from Arbo and Everbuild
- You choose the colour before work begins
- A sealant colour to suit the surroundings
Read our cost guide and our reviews.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes most of a day for a typical house, less for a few frames. Parking in a town like Hythe is normally straightforward, but tell us if there’s a driveway or any restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Clear items away from the joints we are working on
- Keep children and pets away from the work area
- Mention any tricky access
How to get a quote
To get a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Read more
Different surfaces, different methods
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it without cracking.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
Honest limits
We will not take on work that won’t last, so these are the limits:
- Damp problems in the wall away from the window
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A door that needs adjusting, rehanging or new seals
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Joints and surfaces we work on
- Timber windows & doors
- Composite doors
- Window sills
- Patio & French doors
- uPVC windows
- Aluminium frames
Other services in Hythe
How we quote for window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The product the joint needs
- The number and length of the joints
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or email us and we will talk you through it.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- How many joints, rooms or windows are involved
- How we’d reach the joints
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Common questions in Hythe
Do you work for landlords with property near Southampton Town Quay station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Is Hythe in your area for window mastic?
Yes, Hythe is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Can you quote for more than one area?
Of course. Doing several areas at once is generally more efficient.
How much does window mastic cost in Hythe?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before we start.
How long does it take to reseal the windows on a house?
That depends on the number of frames, how they’re reached and the state of the old mastic. We will tell you how long your job needs when we quote.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Does the work come with a guarantee?
Yes. Our 12-month guarantee covers every job, inside or out.