South East England and London

Window Mastic in West Sussex

Wherever you are in West Sussex, we can help with window mastic. Clear quotes up front, and a one-year guarantee.

Window Mastic across West Sussex

Window mastic across West Sussex

Mastic around window and door frames, sills and patio doors. Pick your town below to see the details for your area, and call or email us for a quick quote.

Biggest towns in West Sussex

Window mastic across West Sussex: what to expect

Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that cannot move properly, so deep gaps get backing rod first. The sealant then grips the two sides it should. Typical jobs include draughty joints inside around the window and a bead that doesn’t match the frame, across composite doors, timber windows & doors and window sills.

Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from an hour or two to a full day, depending on how many frames there are.

We check how each frame can be reached safely.
Old, cracked mastic is removed completely, along with any loose debris.
The surfaces are cleaned and left dry.
Deep voids are backed, then the sealant is gunned in.
We tool the joint so water runs off, then clear up.

How we quote

The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.

What you get with us

We leave the area clean and tidy
20+ years of sealant experience
Any old sealant cut out fully, not covered over
Trusted Arbo and Everbuild sealants

How to get a quote

For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.

Near you in Crawley

Typical jobs here are in homes near Friary Church of St Francis and St Anthony, St Wilfrid's Catholic School and Tilgate Park. Other local landmarks include The George Hotel (less than half a mile north), Three Bridges Junior School (less than half a mile south-east) and St Francis of Assisi Catholic Primary School (within half a mile south-east). There’s a railway station in Crawley itself: Crawley station. Well-known places in the area include Crawley Hospital (0.5 miles north-west) and County Mall (under half a mile north-east). Open spaces near Crawley include Tilgate Lake.

Frames and weather across West Sussex

From Crawley, Horsham and Worthing to its smaller places, West Sussex has windows and doors of every age and material. The mastic around all of them ages, and it’s generally the first thing to let the weather in.

London and the South East are among the drier parts of the UK, but outdoor sealant still needs a dry day and clean surfaces, so outside work in West Sussex is planned around the forecast. Along the coast in West Sussex, window and wall joints facing the sea take the brunt of the weather, so they’re often the first to fail. Good preparation and the right sealant help it cope.

Crawley: For landlords with property near Crawley station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you look after a building such as Three Bridges Junior School, the mastic around its windows and doors needs looking after like any other building’s.

How the job changes by surface

Patio & French doors

Door frames take knocks and movement every time the doors are used. A flexible sealant copes with that without cracking.

Timber windows & doors

Soft or rotten wood can’t be sealed successfully. If we find rot, we’ll tell you before going ahead, as that is a job for a joiner.

When something else is needed

It helps to know what we can’t do:

A sash or casement that won’t close properly
Misting between the panes of a double-glazed unit (that needs a new unit)
A door that needs adjusting, rehanging or new seals

What affects the quote in West Sussex

Every job gets its own quote. This is what makes a difference:

Whether old sealant or filler has to be cut out
Any working-time requirements on site
The number of rooms or windows
Whether the work is at height

Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.

Asking for a quote

Before you ask for a quote, have a think about:

Roughly how big the job is
Access, such as stairs, a lift or height
The problem you’ve noticed
Whether it has been sealed before

For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work.

Work for landlords, hotels and businesses

From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

For anyone letting property in or around West Sussex, several properties can be quoted together. Send us the addresses and the work at each.

DIY sealant or a professional job?

Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.

Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

FAQs for West Sussex

Which products do you use?

Each joint gets the product that suits it. Movement, water and weather all affect the choice.

Will new mastic stop draughts?

Yes, where the draught is at the frame edge. We check where the draught is before we start.

Can new window sealant be painted?

Most silicone cannot be painted. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.

Will it make a mess?

Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.

How long should I leave it?

Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.

Do you cover West Sussex?

Yes. We cover West Sussex. To book, call 0345 464 0079 or drop us an email.

Will the old sealant be removed?

Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.