Kent · England

External Mastic in Liverton Street

Professional external mastic in and around Liverton Street, with every bit of old sealant taken out first and a 12-month guarantee.

  • Joints with sealant missing in places
  • Failed sealant between panels on a façade
  • Sealant pulling away from one side of the joint

External mastic near Liverton Street

Looking after it afterwards

To keep the joints looking good and working properly:

  • Act on the first splits you see
  • Look over the joints every year, ideally after winter
  • Keep high-pressure jets off the joints
  • Keep water from gutters off the wall

Keep pressure washers away from the sealant. High-pressure water can lift the edges.

Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established.

About our external mastic in Liverton Street

Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on copings & trims, brickwork movement joints and joints between brick and frames, and people most often call us about movement joints filled with mortar instead of sealant and failed sealant between panels on a façade.

Outside joints can only be sealed when they’re dry, so work in Liverton Street is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.

Every job comes with a 12-month guarantee, wherever you are in Kent.

Mr Mastic applicator sealing the top of a white uPVC door frame on a red-brick house
Where
Liverton Street (ME17)
Wider area
Kent
Cover
One year on every job
Price
A clear quote up front
Call
0345 464 0079
Page updated
26 October 2026

Leave it or put it right?

Sealing over the top of old mastic doesn’t hold for long. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. Around Liverton Street, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.

We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.

Why choose Mr Mastic in Liverton Street

  • Old sealant always removed completely
  • A 12-month guarantee on all work
  • Rated 4.9 stars on Google
  • Quality sealants from Arbo and Everbuild

See how sealant jobs are priced and customer reviews.

What we can’t put right

We will always be straight with you, so here’s what new sealant will not do:

  • Adding movement joints to masonry that has none
  • Damp from another source, such as a leaking gutter or a bridged damp-proof course
  • Render that is blown, hollow or coming away

If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.

Surfaces we seal

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

Work for landlords, hotels and businesses

Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.

A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.

Walls and rooflines in Liverton Street

London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Leeds Castle (about 3.1 miles north-west) nearby, there’s older building stock in the area around Liverton Street as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.

Schools such as Platts Heath Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near Lenham station, split movement joints are easy to miss on a rental until damp shows inside.

Liverton Street is about 8 miles south-east of Maidstone, in Kent. Every kind of property in Liverton Street is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Our Kent coverage runs to 922 places, Liverton Street among them. There’s also a page for Chelmsford, roughly 37 miles from Liverton Street.

All of ME17 is within our area for external mastic, from the main roads to the quietest streets. If you are just outside Liverton Street, we cover Platt's Heath (1 mile north-east), Boughton Malherbe (1 mile south-east), Grafty Green (1 mile south), Fairbourne Heath (1 mile west) and Sandway (1 mile north-east). Larger places within reach include Maidstone (8 miles north-west), Ashford (10 miles south-east), Sittingbourne (9 miles north), Faversham (11 miles north-east), Minster (15 miles north) and Kings Hill (13 miles west).

Near you in Liverton Street

Locally, jobs take us to homes and businesses close to The Lenham School, Kiln Wood and The Kings Head Public House. For rail, the closest station is Lenham station, about 1.6 miles north-east of the centre. A little further out are Coldbridge Castle (1.5 miles south-east) and The Dog Collar Museum (3 miles north-west).

Map of Liverton Street © OpenStreetMap contributors

What we’re called out for in Liverton Street

Some movement joints have been pointed up with mortar. With the joint locked solid, the movement turns into cracks elsewhere in the wall.

Signs it’s time to call us include:

  • Sealant pulling away from one side of the joint
  • Water getting into walls through failed joints
  • Old sealant gone brittle and cracked
  • Weeds or debris growing in open joints

In the older streets around Church of St Nicholas, the joints between older walls, newer extensions and the roofline need a sealant that can move.

What your quote should include

  • The length of the guarantee
  • What happens if the job turns out different
  • Which colour the sealant will be
  • What insurance they hold

Choosing a sealant specialist

Quotes for external mastic in Liverton Street

Every job gets its own quote. These are the things that affect it:

  • The number and length of the joints
  • Whether old sealant or filler has to be cut out
  • The type of sealant required
  • Any working-time requirements on site

Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.

What we need to know

A few details help us give you an accurate quote. When you ask for a quote, tell us:

  • A few photos by email, if you can
  • The rough size of the job
  • Any access issues, like height or stairs
  • Whether it has been sealed before

Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.

What happens on the day

Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours to a few days, depending on the length of joint and the access. In a small place like Liverton Street, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. We look at every joint and agree a colour to suit the wall.
  2. Failed sealant is removed back to clean, sound faces.
  3. Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
  4. Primer is applied wherever the sealant needs it.
  5. A low-modulus exterior sealant is gunned in and tooled to a neat finish.

Preparing for the visit

  • Tell us about any water getting in
  • Mention any parking rules near the property
  • Let us know about stairs, lifts or work at height

How to get a quote

For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved and send you a clear quote.

Ask for a quote

Related advice

Liverton Street questions

Do you cover smaller places like Liverton Street?

Yes, Liverton Street is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.

Do you cover Liverton Street for external mastic?

Yes. Our work covers London and the South East, and Liverton Street is part of that. Just call 0345 464 0079 or email us with a few details of the job.

How long before the joint can be used?

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

Does someone need to be in?

If the work is inside, we need someone to let us in. After that, you can carry on with your day.

Are you an approved applicator?

Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.

What colours does the sealant come in?

The sealant colour is picked to suit the wall. There’s a wide choice of exterior colours.

Is the work guaranteed?

Yes, always. There’s a 12-month guarantee on every job, wherever you are.

Can tenants book the work?

Of course. Ask your landlord first, and we can send them the quote if that helps.

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