West Sussex · England

Window & door mastic in Fontwell, West Sussex

Window mastic across Fontwell and nearby, with every bit of old sealant taken out first.

Cold air getting in at the frame edge
Gaps between the frame and the inside reveal
Water coming in at the bottom corners of a door

Need window mastic in Fontwell?

For landlords and businesses

Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.

In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.

About our window mastic in Fontwell

There are two joints on most windows. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. We work on timber windows & doors, window sills and uPVC windows, and the jobs we see most are leaking joints at the ends of sills and draughty joints inside around the window.

In a village or hamlet like Fontwell, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.

We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.

Place: Fontwell (BN18, PO20)
Wider area: West Sussex
Guarantee: 12 months on all our work
Quotes: Quoted before any work starts
Call: 0345 464 0079
Last updated: 26 October 2026

Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter

How to look after the new joints

So the new joints stay in good condition:

Ventilate rooms so frames don’t stay wet inside
Do not use solvent cleaners on the joint
Repaint timber before it’s bare
Wash the frames with mild soapy water

Try not to touch the new joint while it cures, for as long as we advise. Do not point a pressure washer at the joints.

Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.

Fontwell homes and the weather

Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Goodwood House (about 4.2 miles west) are a reminder that the area around Fontwell 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 is traditional sand mastic.

If you look after a building such as Ormiston Six Villages Academy, its window and door frames need their mastic kept sound, just like a home’s. Goodwood House, about 4.2 miles west, is one of the historic houses in the wider area around Fontwell, and older homes nearby need a sealant that suits their walls.

Fontwell is about 5 miles north of Bognor Regis, in West Sussex. We provide window mastic to householders, landlords and businesses in Fontwell and the surrounding area. Fontwell is one of 371 towns and villages in West Sussex where we work for window mastic. There’s also a page for Portsmouth, roughly 19 miles from Fontwell.

Here we cover the BN18 and PO20 postcode area for window mastic. Whether your property is on London Road, Cooke Road and Steeplechase Way or a nearby road, we can help. Nearby, we also carry out window mastic in Eastergate (1 mile south), Slindon (1 mile north-east), Nyton (1 mile south-west), West Barnham (1 mile south) and Slindon Common (1 mile east). We also work in nearby towns such as Worthing (11 miles east), Bognor Regis (5 miles south), Chichester (6 miles west), Selsey (10 miles south-west), Littlehampton (6 miles south-east) and Lancing (14 miles east).

Near you in Fontwell

In Fontwell, that means homes and buildings near Eastergate CofE Primary School and the streets around them. For rail, the closest station is Barnham station, about 1.6 miles south. Nearby you will also find Tote Copse Castle (2.2 miles south-west) and Arundel and District Hospital (3.7 miles east). For a walk, there’s Bignor Hill and WWT Arundel.

Map of Fontwell © OpenStreetMap contributors

When it is not the sealant

In fairness, some problems need a different trade:

Faulty window hardware
Damp coming through the wall itself rather than the frame joint
Rotten timber, which needs a joiner first

If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.

What we seal

Window sills
uPVC windows
Composite doors
Timber windows & doors
Aluminium frames
Patio & French doors

How we quote for window mastic

For a quick quote, just ask. What matters most is:

When we can work, for business premises
Any mould that needs treating
Whether the work is at height
The product the joint needs

Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.

What we need to know

When you call or email, it’s useful to know:

Whether it’s a home or a business
Whether it has been sealed before
Any access issues, like height or stairs
Pictures of the joints, sent by email

It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or email us.

Fontwell: your questions answered

Do you work for landlords with property near Barnham station?

Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.

Do you cover Fontwell for window mastic?

Yes, Fontwell is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.

Can you get sealant to suit coloured frames?

Yes. White, brown, anthracite grey, black and clear sealants are all available.

Can you quote for more than one area?

Yes. Tell us about everything you’d like done and you’ll get one quote.

Do you hold any approvals?

Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.

What information do you need?

Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply ring 0345 464 0079 or email us.

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.

Are you insured?

Yes. Full insurance covers our work.

What we do, step by step

A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It usually takes anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Fontwell, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.

We check how each frame can be reached safely.
All the failed sealant is cut away, along with any loose debris.
The surfaces are cleaned and left dry.
Backing rod fills deep voids and the sealant goes in on top.
The joint is shaped to shed water and the area tidied.

Before we arrive

Let us know about stairs, lifts or work at height
Plan for the work area to be out of bounds to pets and children
Try not to wet indoor joints just before the visit

Getting a quote

The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.

Get a quick quote