Hampshire · England
Window & door mastic in Fawley, Hampshire
Specialist window mastic for Fawley: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic that is falling out in pieces
- Whistling draughts around closed windows
- Water coming in at the bottom corners of a door
Window mastic in Fawley, done properly
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through and quietens the whistle on windy days. Where the air is getting in through the window itself, we’ll say so. Typical jobs include a bead that doesn’t match the frame and gaps left after new windows were fitted, across patio & French doors, composite doors and aluminium frames.
Somewhere as small as Fawley, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
All our work comes with our one-year guarantee.
- Location
- Fawley (SO45)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What we’re called out for in Fawley
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
Look out for these signs:
- Black, perished sealant on frames
- Rain getting in at the frame or under the sill
- Rushed sealant from a window installation
- Whistling draughts around closed windows
For landlords with property near Hamble station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before booking
- Is the old sealant removed completely?
- Is VAT in the price?
- The length of the guarantee
- Who turns up on the day
How we quote for window mastic
There’s no set price list. What we look at:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Whether there’s mould to deal with
- The number and length of the joints
Combining jobs into one visit is normally more efficient than separate visits. We’ll give you a clear price for the lot.
What we need to know
Photos by email are helpful but not essential. Please mention:
- Whether it has been sealed before
- The rough size of the job
- Pictures of the joints, sent by email
- Whether it’s a home or a business
Want a quote for window mastic? Please call 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
What the job involves on each surface
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A neat, narrow bead in a colour to match suits the frame.
What window mastic looks like in Fawley
Fawley is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around window and door frames, especially on the side facing the sea. Historic houses like Beaulieu Palace House (about 4.4 miles west) are a reminder that the area around Fawley has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For site and facilities teams at buildings such as Fawley Infant School, larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Church of All Saints include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Fawley is about 3 miles south-east of Hythe, in Hampshire. Fawley gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Across Hampshire, we cover 683 places, and Fawley is one of them. Southampton is on our list too, about 7 miles from Fawley.
All of SO45 is within our area for window mastic. We cover properties on The Square, Whites Lane and Forge Lane. We also cover the places around Fawley: Stonehills (1 mile south-east), Ashlett (1 mile east), Sprat's Down (1 mile south), Blackfield (1 mile south-west) and Calshot (1 mile south-east). We also work in nearby towns such as Gosport (9 miles east), Eastleigh (10 miles north), Fareham (7 miles east), Totton (9 miles north-west), Chandler's Ford (11 miles north) and Hedge End (6 miles north).
Landmarks near Fawley
Typical jobs here are in homes near Falcon Hotel and The New Forest Academy, among other places. The closest station to Fawley is Hamble station, roughly 3.2 miles north. Other landmarks nearby include Coldeast (4.2 miles north-east) and Calshot Castle (1.9 miles east). Open spaces near Fawley include Mercury Marshes.
When it isn’t the sealant
Before booking, it’s worth knowing the limits too:
- Draughts through the window seals rather than the frame
- Rotten timber, which needs a joiner first
- Faulty window hardware
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Where we work in Fawley
- Timber windows & doors
- Aluminium frames
- Patio & French doors
- uPVC windows
- Window sills
- Composite doors
Why it’s worth doing now in Fawley
Failed mastic isn’t a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. Problems with the glass or gaskets are for a window company, and we will say so. Where a wall is exposed, as many are in small places like Fawley, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why choose Mr Mastic in Fawley
- Old sealant always removed completely
- Domestic, commercial and hotel work
- 4.9 on Google from 180+ five-star reviews
- You choose the colour before work begins
Read what affects the cost or our reviews.
Also near Fawley
Other services in Fawley
FAQs for Fawley
Does living near the coast affect window mastic in Fawley?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Will you come out to Fawley?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Do you guarantee window mastic?
Yes. Our 12-month guarantee covers every job.
What happens on the day
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes a few hours for a few frames, or a day or more for a whole house in most cases. Somewhere like Fawley needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
How to prepare
- Mention any tricky access
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
How to get a quote
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.