South East England and London

External Mastic in East Sussex

Wherever you are in East Sussex, our applicators can help with external mastic. A clear quote before we start, and a one-year guarantee.

Need external mastic in East Sussex?

Call 0345 464 0079

Get a quick quote

Where we work in East Sussex

Sealing brickwork movement joints, render, cladding and façade joints. Pick your town below to see the details for your area, and call or email us for a quick quote.

Biggest towns in East Sussex

About external mastic in East Sussex

External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We strip the joint back and start again. Common call-outs are for weeds or debris growing in open joints and joints with sealant missing in places, on concrete & block, façade panels and brickwork movement joints.

On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours for a handful of joints, longer for a whole elevation from start to finish.

We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
We cut out the failed sealant and rake out any dirt or growth.
The joint faces are cleaned and primed where the sealant needs it.
We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.

Pricing in East Sussex

No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.

Why customers in East Sussex choose us

Domestic, commercial and hotel work
Sanitary silicone with an anti-fungal additive in wet areas
Neat joints and a tidy finish
Old sealant always removed completely

Get a quote

There’s no standard price list. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.

Near you in Eastbourne

Around Eastbourne, our work takes us to homes and buildings near St Andrew, Princes Park and Stafford Junior School. Also close by are 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). The nearest railway station is Hampden Park station, roughly 0.7 miles north-west of the centre. 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.

External mastic across East Sussex: local notes

From Eastbourne, Hastings and Bexhill-on-Sea to its smaller places, buildings across East Sussex have walls, gutters and rooflines of every age. Each needs a sealant that can move, laid at the right depth.

London and the South East have homes from every era, from period terraces to post-war new towns and new estates. The right sealant depends on the age and materials of the building. Coastal guest houses and holiday lets in East Sussex can see heavy use in busy months, so their sealant and grout wear faster than most, and the weather is hard on the outside too.

Eastbourne: Rented homes near Hampden Park station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as St Andrew, the joints between older walls, newer extensions and the roofline need a sealant that can move.

Why act early?

A failed movement joint lets water into the wall and can run behind render or cladding. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it.

Questions to ask before you book

Whether you can choose the colour
When the joint can take water or movement
What happens if they find a problem under the old sealant
Who does the work, and how experienced they are

Different surfaces, different methods

Concrete and blockwork

Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.

Render joints

Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and protects the render itself.

Can I do it myself?

The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.

A DIY attempt doesn’t rule out a professional job. We cut it out and start again.

What affects the cost of external mastic

Some jobs are bigger than they look, and some smaller. The main factors:

Any mould that needs treating
The number of rooms or windows
The type of sealant required
Any working-time requirements on site

Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will explain what it covers.

Asking for a quote

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

Whether it has been sealed before
Any access issues, like height or stairs
The problem you’ve noticed
Pictures of the joints, sent by email

To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.

Why it fails

UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.

These are the problems we’re asked about most:

Brick movement joints where the sealant has split
Sealant pulling away from one side of the joint
Joints pointed up with cement by mistake
Cracked joints where brick meets render or frames

FAQs for East Sussex

Do I have to be there?

Access is agreed with you when the job is booked. Indoors, that usually means someone at home.

Is it messy?

Not at all. The area is protected while we work and cleaned up afterwards.

Is there any odour?

Possibly a little. Any smell clears as the sealant cures, and ventilation helps.

Do you do commercial work?

Yes. Larger jobs can be planned room by room or area by area to suit the site.

Where do you work from?

We are a Crawley-based firm. Our area covers South East England, London and Scotland.

How often do external joints need resealing?

That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away.

Can a movement joint be filled with mortar?

No, not where the gap is a movement joint. Pointing it stops it working, and the wall may crack nearby. We’ll reseal it with a flexible sealant.