West Sussex · England
Window & door mastic in Midhurst, West Sussex
Professional window mastic in and around Midhurst, with every bit of old sealant taken out first and a 12-month guarantee.
- Leaking joints at the ends of sills
- A bead that doesn’t match the frame
- Black, perished sealant on frames
How we handle window mastic in Midhurst
Whether it’s one leaking patio door or every frame on the house, the work is priced before anything is done. To get one, phone 0345 464 0079 or send us an email with the number of frames and any access details for window mastic in Midhurst. Common call-outs are for water coming in at the bottom corners of a door and cold air getting in at the frame edge, on uPVC windows, composite doors and patio & French doors.
Houses in smaller places like Midhurst can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. That is hard on the mastic around frames and sills.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Midhurst (GU29)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What happens on the day
At the end, we look at the finished work together and tell you how long to leave it. The visit itself normally takes a few hours for a few frames, or a day or more for a whole house, depending on the amount of work. A visit to Midhurst is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- 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.
- Finally we tidy up and check each joint.
How to prepare
- Mention any sign-in or site rules at work premises
- Where the joints are inside, avoid wetting them before we arrive
- Clear the area around the work
Getting a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before we start.
Advice
Window mastic in Midhurst: local notes
Historic houses like Cowdray House (about 0.6 miles north-east) are a reminder that the area around Midhurst has older buildings as well as new. In older buildings, 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Midhurst CofE Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Roman Catholic Church of Divine Motherhood, the joint between an old wall and a newer frame is usually the first place rain gets in.
Midhurst is about 8 miles east of Petersfield, in West Sussex. From the centre of Midhurst to the outskirts, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Midhurst is one of 371 places in West Sussex we cover for window mastic. For nearby work, see our Portsmouth page, about 19 miles away.
All of GU29 is covered for window mastic. Whether your property is on Station Road, Edinburgh Square and Pretoria Avenue or a nearby road, we can help. You will find Midhurst on the A272 and A286, so it’s easy for us to get to with everything needed for window mastic. We also cover Bepton Common (1 mile south-west), West Lavington (1 mile east), Cocking Causeway (1 mile south), Easebourne (1 mile north-east) and Woolbeding (1 mile north-west). Further out, we also cover Bognor Regis (14 miles south), Chichester (10 miles south), Littlehampton (15 miles south-east), Emsworth (12 miles south-west), Storrington (14 miles east) and Billingshurst (13 miles east).
Near you in Midhurst
Around Midhurst, our work takes us to homes and buildings near The Egmont Public House, Midhurst Rother College and St Margaret's Convent. Well-known places in the area include Midhurst Community Hospital (0.8 miles north-east) and Lodsworth Castle (3.2 miles east). Open spaces near Midhurst include Levin Down and Iping and Stedham Commons.
Nearby places to Midhurst
More services for Midhurst
Leave it or put it right?
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. Homes in smaller places like Midhurst can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
What you get with us
- Fully insured
- White, clear, grey or coloured to suit, where the product allows
- ARBOMaster approved applicator
- You choose the colour before work begins
Read what affects the cost or our reviews.
When it isn’t the sealant
New sealant cannot fix everything, and we’ll tell you before any work starts. It won’t solve:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Rotten timber, which needs a joiner first
- Faulty window hardware
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
What we seal
- Timber windows & doors
- uPVC windows
- Window sills
- Aluminium frames
- Patio & French doors
- Composite doors
What the job involves on each surface
Window sills
Masonry sills can have joints where water gets in, including the one between the sill and the frame above. Those are sealed with a product suited to stone or concrete.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Avoid harsh chemicals near the mastic
- Keep drainage slots and sill grooves clear
- Keep jet washers away from the mastic
- Ventilate rooms so frames do not stay wet inside
Silicone can’t usually be painted, so mention any painting plans before any work starts. We can use a paintable sealant where that matters.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. Resealing closes it.
Questions from Midhurst
Do you cover Midhurst for window mastic?
Yes. We work across London and the South East, and Midhurst is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
What guarantee comes with window mastic in Midhurst?
All our work, in Midhurst and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
How much does window mastic cost in Midhurst?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before any work starts.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Can resealing stop a draught around my window?
It will if the frame joint is the problem. We find where the air is coming from before we reseal.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.