West Sussex · England
Window & door mastic in Chichester, West Sussex
Problem with your window and door frames in Chichester? We cut out the old, prepare the joints and apply the right sealant.
- Draughts coming in around windows and doors
- Gaps where the sill meets the wall
- Gaps between the frame and the inside reveal
What we are called out for in Chichester
Timber windows bring their own problems. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
People generally contact us after spotting one of these:
- Old mastic that has gone black or come away
- Rushed sealant from a window installation
- Hard, cracked sealant around windows
- Leaking joints at the ends of sills
If you let a flat or house near Chichester station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What your quote should include
- The length of the guarantee
- Which colour the sealant will be
- Are they insured?
- Who does the work, and how experienced they are
About our window mastic in Chichester
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We’re often asked to deal with untidy mastic left by window fitters and water coming in at the bottom corners of a door, across aluminium frames, timber windows & doors and uPVC windows.
Walls in Chichester that face the prevailing wind take the most weather, and that’s normally where the sealant gives up first. It’s worth looking at every frame, not just the one that leaks.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Chichester (PO19, PO20, PO18, PO10)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What window mastic looks like in Chichester
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Goodwood House (about 2.7 miles north-east) nearby, there’s older building stock in the area around Chichester as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Schools such as Lancastrian Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as Church of St Paul, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Chichester is about 27 miles east of Southampton, in West Sussex. For window mastic in and around Chichester, it’s easy to get a quote: please ring 0345 464 0079 or email us. We’re based in Crawley and cover West Sussex. Chichester is one of 371 towns and villages in West Sussex we cover for window mastic. Our Portsmouth page covers work nearby.
We work across the PO19, PO20, PO18 and PO10 postcode area for window mastic. Streets in the area include St Martin's Square, Market Road and Old Market Avenue, all of which we cover. You’ll find Chichester on the A27 and A259, so it’s easy for us to get to with everything needed for window mastic. We also cover the places around Chichester: Portfield (1 mile east), Westhampnett (1 mile north-east), Shopwyke (2 miles east), Maudlin (2 miles north-east) and East Lavant (2 miles north). Further out, we also cover Bognor Regis (5 miles south-east), Selsey (7 miles south), Littlehampton (11 miles east), Emsworth (7 miles west), Rustington (12 miles east) and Storrington (15 miles east). Being one of West Sussex’s larger places, Chichester has homes, rented property and businesses of every kind.
Near you in Chichester
Typical jobs here are in homes near Chichester High School For Girls, George and Dragon Inn and Central C of E Junior School. Chichester’s nearest station is Chichester station, roughly 0.6 miles south of the centre. Well-known places in the area include Novium Museum (less than half a mile south) and Chichester Castle (within half a mile east). The countryside around Chichester includes Stoke Down and Kingley Vale National Nature Reserve.
How it works
At the end, we look at the finished work together and explain the cure time. The visit itself generally takes a few hours for a few frames, or a day or more for a whole house, depending on the size of the job. Parking in a town like Chichester is normally straightforward, but tell us if there’s a driveway or any restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Before we arrive
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
- Mention any parking rules near the property
Get a quote
If you’re in Chichester and need window mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
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Places near Chichester
Also in Chichester
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Look round the frames every year or so
- Repaint timber before it’s bare
- Wipe condensation off the frames
- Do not aim a pressure washer at the joints
Keep the new mastic undisturbed while it cures, following the cure time we give you. Don’t point a pressure washer at the joints.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
Chichester questions
What guarantee comes with window mastic in Chichester?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Do you cover Chichester for window mastic?
Yes, Chichester is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures.
Can resealing stop a draught around my window?
In many cases. Air often gets in between the frame and the wall, and sealing the inside and outside joints closes that path.
Do you remove the old sealant?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint before we leave.
How many windows can you do in a day?
Allow 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.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints.
Landlords, agents and businesses in Chichester
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
What affects the cost of window mastic
Jobs vary more than people expect. What affects the quote:
- The size of the job
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- When we can work, for business premises
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What to tell us for a quote
You do not need to know the technical terms. Just tell us:
- If someone has resealed it before
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- How we’d reach the joints
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Surface by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.