Hampshire · England
Window & door mastic in Lee, Hampshire
Window mastic for Lee, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cracked or shrunken mastic around the frame
- Cracked sealant at the sill ends
- Untidy mastic left by window fitters
How we handle window mastic in Lee
Frames and walls do not move together. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. If you are dealing with rain getting in at the frame or under the sill and gaps between the frame and the inside reveal, we can help.
Homes in small places like Lee 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.
There’s a 12-month guarantee on every job, large or small.
- Place
- Lee (SO51)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Older cottages and farmhouses around Lee can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start.
What you get with us
- Trusted Arbo and Everbuild sealants
- White, clear, grey or coloured to suit, where the product allows
- We never seal over old sealant
- 4.9 on Google from 180+ five-star reviews
See our cost guide or customer reviews.
Frames and glazing around Lee
Lee 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. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Oasis Academy Lord's Hill are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Letting a property close to Romsey station? Then renewing tired window mastic between tenants heads off draught and damp complaints. For an older house near a landmark such as Church of St Boniface, the joint between an old wall and a newer frame is normally the first place rain gets in.
Lee is about 2 miles south of Romsey, in Hampshire. Wherever you are in the SO51 postcode area, our applicators can take on window mastic. Our Hampshire coverage runs to 683 places, Lee among them.
Work in SO51 works the same way as everywhere else we cover. Local streets include Lee Lane and Lee Church Lane, all of which we cover. If you are just outside Lee, we cover Ashfield (1 mile east), Toothill (1 mile east), Upton (1 mile south-east), Nursling (1 mile south-east) and Rownhams (2 miles south-east). Further out, we also cover Winchester (10 miles north-east), Eastleigh (6 miles east), Fareham (15 miles south-east), Totton (3 miles south), Chandler's Ford (5 miles north-east) and Hedge End (9 miles east).
Around Lee
For rail, the closest station is Romsey station, about 2.4 miles north of the centre. Well-known places in the area include King Johns House (2.3 miles north) and Romsey Community Hospital (2.3 miles north). Open spaces near Lee include Testwood Lakes.
Lee questions
I let a flat near Romsey station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do you cover smaller places like Lee?
Yes, Lee is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
What information do you need?
A short description and the location, with pictures by email if possible. We will ask anything else we need to know.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Can you reach windows above the ground floor?
Yes, where it’s safe. Higher or awkward frames may need extra access, and we’ll confirm what’s needed.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Are you insured?
Yes. Full insurance covers our work.
Surface by surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the threshold joint takes a lot of water. Each is cleaned, backed where deep and resealed.
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We seal the frame and let you know about anything else.
What we do, step by step
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the job takes most of a day for a typical house, less for a few frames in most cases. Somewhere like Lee needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Tell us if parking is tricky
- Tell us about any previous sealing or DIY attempts
How to get a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear quote before any work starts.
Related advice
How we quote for window mastic
Every job gets its own quote. This is what makes a difference:
- Whether old sealant or filler has to be cut out
- The type of sealant required
- The amount of work
- How many areas need sealing
Leaving a failed joint generally makes the job bigger, not smaller. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Asking for a quote
To make quoting easier, let us know:
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
- Roughly how big the job is
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or drop us an email.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Avoid blasting the frames with a pressure washer
- Repaint timber before it’s bare
- Do not use solvent cleaners on the joint
- Paint up to the joint, not over it
Try not to touch the new joint while it cures, following the cure time we give you. Keep jet washers away from the frames.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Catching it early keeps the fix to a reseal.
When something else is needed
A few problems are outside what sealant work can do:
- Broken hinges, locks or handles
- A failed sealed unit that has misted up
- Damp coming through the wall itself rather than the frame joint
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Surfaces we seal
- Aluminium frames
- Composite doors
- Timber windows & doors
- Patio & French doors
- uPVC windows
- Window sills
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.