East Sussex · England

External & façade joints in Broad Street, East Sussex

Specialist external mastic for Broad Street: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.

  • Sealant pulling away from one side of the joint
  • Weeds or debris growing in open joints
  • Failed seals between different materials

Book external mastic in Broad Street

About our external mastic in Broad Street

A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. We work on brickwork movement joints, joints between brick and frames and copings & trims, and the jobs we see most are weeds or debris growing in open joints and old sealant gone brittle and cracked.

Around Broad Street, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.

Whatever the size of the job, it’s backed by our 12-month guarantee.

Eleven members of the Mr Mastic team standing in front of branded white vans
Where
Broad Street (TN36)
Region
East Sussex
Cover
12 months on all our work
Quotes
Quoted before any work starts
Call
0345 464 0079
Page updated
26 October 2026

How the job changes by surface

Cladding and façade panels

Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.

Concrete and blockwork

Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.

Common problems we fix in Broad Street

If plants are growing out of a joint, the sealant has usually failed or was never there. Dirt and roots then trap moisture in the joint.

If you can see any of these, it’s time to have the joints looked at:

  • Leaking joints around cladding and façade panels
  • Gaps where render, brick and frames meet
  • Plants rooting in failed movement joints
  • Sealant pulling away from one side of the joint

For an older house near a landmark such as The Parish Church of St Nicholas, old and new materials meet at the roofline and walls, which is where sealant earns its keep.

Comparing quotes

  • How the joint is cleaned and prepared
  • What product goes in the joint
  • Who turns up on the day
  • What insurance they hold

Choosing a sealant specialist

What sealant work cannot fix

To be straight with you, there are a few things sealant will not fix:

  • Cracking across the wall rather than at a joint
  • Adding movement joints to masonry that has none
  • Render that is blown, hollow or coming away

If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before you book.

What we seal

  • Brickwork movement joints
  • Façade panels
  • Concrete & block
  • Render & cladding joints
  • Copings & trims
  • Joints between brick and frames

How it works

There is not much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes anything from a few hours to several days, depending on the building, including the tidy-up. In a small place like Broad Street, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. We start by checking each joint, agreeing the ones to redo and how we will reach them.
  2. Old sealant and any debris are cut and raked out.
  3. We clean both faces of the joint and prime them where the product calls for it.
  4. Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
  5. The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.

How to prepare

  • Mention any parking rules near the property
  • Let us know about stairs, lifts or work at height
  • For indoor joints, keep the area dry beforehand if you can

Getting a quote

Want a quote for external mastic? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.

Get a quick quote

Advice

Questions from Broad Street

Will you come out to Broad Street?

Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.

Is external mastic in a coastal place like Broad Street any different?

Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.

How do you reach high-level joints?

That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.

Do you work for hotels and businesses?

Yes. We’ve worked for hotels, offices and other businesses and we are fully insured.

Will the old sealant be removed?

Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.

How long will you be here?

As a guide, most jobs take anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we’ll tell you how long to expect.

Do the sealants smell?

There can be a smell while the sealant cures, but it fades. Ventilation helps.

Can you seal joints between render and window frames?

Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.

Looking after it afterwards

Aftercare is simple:

  • Fix overflowing gutters above sealed joints
  • Keep soil, plants and ivy away from the joints
  • Have failed joints looked at early
  • Look over the joints every year, ideally after winter

Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.

If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.

Broad Street buildings and the weather

Broad Street is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.

Managing a site like Icklesham Church of England Primary School? Then larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Doleham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.

Broad Street is about 5 miles north-east of Hastings, in East Sussex. For external mastic in and around Broad Street, please call 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover East Sussex, Broad Street included. Broad Street is one of 289 places in East Sussex we cover. There’s also a page for Brighton, roughly 35 miles from Broad Street.

We cover every part of the TN36 postcode area for external mastic and the streets around it. Other places close to Broad Street include Icklesham (1 mile east), Udimore (1 mile north), Cock Marling (2 miles north-east), Three Oaks (2 miles south-west) and Broadland Row (2 miles north-west). Within a short drive, we also cover Hastings (5 miles south-west), Bexhill-on-Sea (9 miles south-west), St Leonards (6 miles south-west), Hastings Old Town (5 miles south-west), Belmont (5 miles south-west) and Hollington (5 miles south-west).

What’s near Broad Street

Broad Street’s nearest station is Doleham station, roughly 1.8 miles west. Well-known places in the area include Camber Castle (3.7 miles east) and Winchelsea Court Hall Museum (2.5 miles east). Green spaces nearby include Flatropers Wood.

Map of Broad Street © OpenStreetMap contributors

Leave it or put it right?

Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. In a small place like Broad Street, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.

Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.

Why Broad Street customers choose us

  • We leave the area clean and tidy
  • Over 20 years’ experience
  • Colour picked to suit the job
  • A choice of colours where the product allows

Take a look at our cost guide and customer reviews.

For landlords and businesses

From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.

For anyone letting property in or around Broad Street, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job