South East England and London

Window Mastic in East Sussex

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

Window mastic in every part of East Sussex

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

Larger towns

How window mastic works in East Sussex

Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. Either or both can be done. We work on uPVC windows, timber windows & doors and composite doors, and common reasons people get in touch are water coming in at the bottom corners of a door and whistling draughts around closed windows.

The work is kept neat and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a few hours for a few frames, or a day or more for a whole house, and we explain the cure time before we leave.

We start by checking each window and door with you.
The old mastic is cut out and the surfaces cleaned back.
Deep gaps are filled with backing rod to set the depth.
New exterior sealant goes on in a matching colour and is tooled smooth.
We clear up and check every joint is fully closed.

Pricing in East Sussex

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 will explain what it covers.

Why choose Mr Mastic

Anti-fungal sanitary silicone in wet areas
A choice of colours where the product allows
Tidy, careful work
Any old sealant cut out fully, not covered over

Getting a quote

Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.

Local landmarks in Eastbourne

Locally, jobs take us to homes and businesses close to St Andrew, Princes Park and Stafford Junior School and the streets around them. Other local landmarks include The King's Arms Public House (0.9 miles south-east), WMG Academy for Young Engineers (1.5 miles south-west) and Ratton School (1.1 miles west). For rail, the closest station is Hampden Park station, roughly 0.7 miles north-west. Other landmarks nearby include Pevensey Castle (3 miles north-east) and Royal Sussex Regimental Museum (1 mile south-east). Green spaces nearby include Combe Hill.

Windows and doors across East Sussex

Across East Sussex, from Eastbourne, Hastings and Bexhill-on-Sea outwards, frames range from older timber to modern uPVC and aluminium. Each needs the right sealant, and every joint wears out eventually.

The South East is one of the drier parts of the UK, though outside sealant still needs a dry, clean joint, so work across East Sussex is planned around the weather. Along the coast in East 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.

Eastbourne: Rented homes near Hampden Park station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Stafford Junior School? Then larger buildings have plenty of frames, and the mastic around each one ages.

Honest limits

In fairness, some problems need a different trade:

Soft or decayed wood in the frame
Broken hinges, locks or handles
Misting between the panes of a double-glazed unit (that needs a new unit)

What we’re called out for in East Sussex

A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.

People usually contact us when they notice one of these:

Leaking joints at the ends of sills
Black, perished sealant on frames
Untidy mastic left by window fitters
Cold air getting in at the frame edge

What happens if it’s left?

A quick bead over the top of old mastic looks like an easy fix, but new sealant can’t bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. Proper resealing starts with removing the old joint.

Questions to ask before you book

Is the old sealant removed completely?
How hidden problems are handled
What preparation is included
Whether the sealant suits the joint

Aftercare tips

Aftercare is simple:

Clean frames with a soft cloth and soapy water
Keep timber frames painted
Wipe condensation off the frames
Keep paint off silicone joints

A yearly look round the frames is enough. Small splits are simple to catch before they leak, and if anything looks wrong, just phone 0345 464 0079 or email us.

Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.

Surface by surface

Patio & French doors

Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.

uPVC windows

We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall.

Questions from East Sussex

Do I have to be there?

That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.

What sealant do you use?

It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.

Do you do commercial work?

Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.

Can tenants book the work?

Of course. Check with your landlord; we can send the quote to them too.

Can I do it myself?

Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.

Do you guarantee window mastic?

Yes, for 12 months. A yearly look at the joints helps them last.

Are you an approved applicator?

Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.