Hampshire · England
Window Mastic in Highwood
Our applicators work in Highwood on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Untidy mastic left by window fitters
- Mastic that has split away from the wall
- Leaking joints at the ends of sills
Questions from Highwood
Is Highwood in your area for window mastic?
Yes, Highwood is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Do you cover smaller places like Highwood?
Yes, Highwood is covered. 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 there any odour?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
How many windows can you do in a day?
The work takes most of a day for a typical house, less for a few frames. Access and how stubborn the old mastic is affect the time most.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
What should I tell you?
A short description and the location, with pictures by email if possible. If we need more, we’ll ask.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Window mastic in Highwood, done properly
From a single sill to a whole house of windows, you’ll get a clear quote before we start. To get one, phone 0345 464 0079 or drop us an email with the number of frames and any access details. We work on aluminium frames, uPVC windows and composite doors, and the jobs we see most are water coming in at the bottom corners of a door and draughts coming in around windows and doors.
Outdoor sealant needs dry, clean surfaces, so work on frames around Highwood is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
There’s a 12-month guarantee on every job, large or small.
- Where
- Highwood (BH24)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How the visit works
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it normally takes most of a day for a typical house, less for a few frames. For a village or hamlet like Highwood, the journey is planned in advance: 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 each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Mention any sign-in or site rules at work premises
- Keep children and pets away from the work area
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Related advice
What the job involves on each surface
Aluminium frames
Coated aluminium needs a compatible sealant, and acetoxy silicones are not used, as they can attack some metals. Neutral-cure sealant is the safe choice.
Patio & French doors
Water at the foot of a door frame is not always the mastic: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
How we quote for window mastic
Your quote is based on your job. We take into account:
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
- How many areas need sealing
- When we can work, for business premises
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We will give you a clear price for the lot.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- What’s wrong with the joints now
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- Photos by email, if that’s easy
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or send us an email.
Why deal with it now?
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Around Highwood, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.
What you get with us
- Quality sealants from Arbo and Everbuild
- An ARBOMaster approved applicator
- Anti-fungal sanitary silicone in wet areas
- Domestic, commercial and hotel work
See how sealant jobs are priced and our reviews.
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.
Window mastic in Highwood: local notes
Historic houses like Avon Tyrrell House (about 4.6 miles south) are a reminder that the area around Highwood has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to St John the Baptist include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Managing a site like Poulner Infant School? Then its window and door frames need their mastic kept sound, just like a home’s.
Highwood is about 2 miles north-east of Ringwood, in Hampshire. For window mastic in and around Highwood, please phone 0345 464 0079 or send us an email for a quick quote. We cover Hampshire from our Crawley base, Highwood included. 683 places in Hampshire are on our list. There’s also a page for Southampton, about 16 miles away.
Jobs for window mastic in BH24 is quoted and booked the same way as anywhere else. Nearby, we also carry out window mastic in Hangersley (1 mile south), Rockford (1 mile north-west), Shobley (1 mile south-east), Forest Corner (1 mile south-east) and Blashford (1 mile west). Larger places within reach include Totton (12 miles east), Lymington (12 miles south-east), Romsey (15 miles north-east), New Milton (9 miles south-east), Barton on Sea (10 miles south-east) and Dibden Purlieu (15 miles east).
What’s near Highwood
We work in homes and buildings around Ringwood School Academy and Alice Lisle Inn, among other places. Other landmarks nearby include St Leonard's Hospital (5.5 miles south-west). Open spaces near Highwood include Linbrook Lake and Blashford Lakes.
Nearby places to Highwood
Also in Highwood
When it isn’t the sealant
Sealant is not the answer to every problem, and we will tell you before any work starts. Sealant will not put right:
- Damp problems in the wall away from the window
- Broken hinges, locks or handles
- Rotten timber, which needs a joiner first
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Aluminium frames
- uPVC windows
- Window sills
- Composite doors
- Patio & French doors
- Timber windows & doors
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.