Hampshire · England
Hill Head Window Mastic
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Hill Head. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where the sill meets the wall
- Gaps left after new windows were fitted
- Cracked or shrunken mastic around the frame
Work for landlords, hotels and businesses
We work for letting agents and landlords as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote.
How we handle window mastic in Hill Head
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that cannot move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. If you are dealing with gaps between the frame and the inside reveal and mastic that’s falling out in pieces, we can help.
Mastic can only go onto a dry, clean joint, so window work in Hill Head is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Hill Head (PO14)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a few hours for a few frames, or a day or more for a whole house. For a village or hamlet like Hill Head, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Related advice
Why act early in Hill Head
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. In a small place like Hill Head, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
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. Call for a quick quote and we will explain what it covers.
Why Hill Head customers choose us
- Full insurance on every job
- More than 20 years in sealant work
- We leave the area clean and tidy
- Anti-fungal silicone where joints get wet
Take a look at our cost guide and what customers say.
Different surfaces, different methods
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. We match the colour to the frame.
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Clean frames with a soft cloth and soapy water
- Ventilate rooms so frames do not stay wet inside
- Keep paint and stain on wooden frames in good order
- Don’t use solvent cleaners on the joint
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
How we quote for window mastic
The quote reflects the job in front of us. We take into account:
- How easy the joints are to reach
- The size of the job
- The type of sealant required
- Any mould that needs treating
Combining jobs into one visit is generally more efficient than separate visits. You’ll get one clear quote for the whole job.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Any access issues, like height or stairs
- Where the property is
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
Windows and doors in Hill Head
Hill Head is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around window and door frames, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Crofton Hammond Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Holy Rood Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Hill Head is about 3 miles south-west of Fareham, in Hampshire. For window mastic in and around Hill Head, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We cover Hampshire from our Crawley base, Hill Head included. Hill Head is one of 683 places in Hampshire we cover. There’s also a page for Portsmouth, about 7 miles away.
Work in PO14 is quoted and booked the same way as anywhere else. If you need window mastic at a property on Elsfred Road, Osborne View Road and Cottes Way or anywhere close by, we can help. Neighbouring places we cover for window mastic include Stubbington (1 mile north-east), Little Posbrook (1 mile north-west), Titchfield (2 miles north), Catisfield (2 miles north) and Heathfield (2 miles north). Within a short drive, we also cover Gosport (4 miles east), Havant (11 miles east), Eastleigh (11 miles north-west), Fareham (3 miles north-east), Horndean (11 miles north-east) and Totton (14 miles north-west).
Landmarks near Hill Head
Around Hill Head, our work takes us to homes and buildings near Crofton School, Stubbington House School and The Osborne View pub, among other places. The nearest railway station is Fareham station, about 2.9 miles north-east. A little further out are Carron Row Farm Museum (2.8 miles north) and Fareham Shopping Centre (3.3 miles north-east). Not far away are West of the River Alver.
Towns and villages near Hill Head
Also in Hill Head
What we’re called out for in Hill Head
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
Any of these means the joints need attention:
- Whistling draughts around closed windows
- Water coming in at the bottom corners of a door
- Mastic that has split away from the wall
- Old mastic that has gone black or come away
Rented homes near Fareham station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What your quote should include
- Whether you can choose the colour
- How long to leave it before use
- How long the guarantee is
- Which sealant they’ll use, and why
Common questions in Hill Head
Does the coastal weather in Hill Head affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is Hill Head within the area you cover?
Yes. Hill Head is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
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.
Is the new sealant paintable?
Not if it’s silicone. Tell us your decorating plans and we’ll pick a sealant to suit.
Can you do upstairs windows?
Yes, where it’s safe. Higher or awkward frames may need extra access, and we’ll confirm what’s needed.
Do you guarantee window mastic?
Yes. Every job comes with our 12-month guarantee, and we are ARBOMaster approved applicators.
Do you seal inside as well as outside?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.