Kent · England

Rodmersham External Mastic

External mastic in Rodmersham from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.

  • Cracked joints where brick meets render or frames
  • Leaking joints around cladding and façade panels
  • Moss and dirt in joints with no sealant left

Need external mastic in Rodmersham?

DIY sealant or a professional job?

If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.

A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

External mastic in Rodmersham, done properly

Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. Common call-outs are for plants rooting in failed movement joints and weathered mastic that no longer stretches, on copings & trims, façade panels and brickwork movement joints.

Older homes in small places like Rodmersham may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.

We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.

Place
Rodmersham (ME9)
Wider area
Kent
Cover
A year, on every job
Quotes
A clear price before work begins
Phone
0345 464 0079
Page updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

Common questions in Rodmersham

I let a flat near Sittingbourne station. Can you help?

Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.

Does the coastal weather in Rodmersham affect outside sealant?

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.

Do you work in Rodmersham?

We do. Rodmersham is part of the area we cover.

Do you hold any approvals?

Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.

Do you do commercial work?

Yes. We have worked for hotels, offices and other businesses, and we’re fully insured.

Do you work at height?

Each building is different. Tell us the height, the number of joints and what’s below them and we will confirm how they can be reached safely.

What do you need from me for a quote?

Just the basics: the address or postcode, what’s wrong and any access issues. Then call 0345 464 0079 or drop us an email.

Is there any odour?

It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.

Landlords, agents and businesses in Rodmersham

In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.

Letting agents often deal with us directly. Tell us the address, the job and how access works.

Surface by surface

Joints between dissimilar materials

Each side of the joint may need its own preparation. Both surfaces are cleaned and primed as the product requires.

Copings and trims

Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.

What happens on the day

All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Rodmersham needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.

  1. We start by walking round the building and agreeing the joints and the access.
  2. We cut out the old mastic and rake out anything in the joint.
  3. The faces are brushed clean and primed where the product requires it.
  4. Backing rod sized to the joint goes in to set the depth.
  5. The exterior sealant is applied, tooled and checked along its length.

Before we arrive

  • Tell us about any water getting in
  • Clear the area around the work
  • Tell us about access, such as stairs, a lift or high-level joints

Ask for a quote

There’s no standard price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.

Get a quick quote

Related advice

Do you need external mastic in Rodmersham?

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.

Signs it’s time to call us include:

  • Damp patches traced to an open external joint
  • Failed sealant between panels on a façade
  • Old sealant gone brittle and cracked
  • Rigid filler in a joint that should flex

Managing a site like Rodmersham School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.

Comparing quotes

  • Whether you can choose the colour
  • When the joint can take water or movement
  • How much experience the applicator has
  • What preparation is included

10 questions to ask before booking

External mastic in Rodmersham: local notes

Rodmersham is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.

In the older streets around Church of St Nicholas, old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you let a flat or house near Sittingbourne station, outside joints that have cracked can let damp into a rental, so check them between lets.

Rodmersham is about 2 miles south-east of Sittingbourne, in Kent. Homes, rented property, offices and hotels in Rodmersham is covered for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Rodmersham is one of 922 towns and villages in Kent where we work for external mastic. Our Chelmsford page covers work nearby.

Postcode districts we cover here for external mastic: ME9. We also cover Bapchild (1 mile south), Rodmersham Green (1 mile west), Highsted (1 mile west), Radfield (1 mile north-east) and Newbury (1 mile south). We also work in nearby towns such as Maidstone (11 miles west), Ashford (13 miles south), Canterbury (14 miles east), Whitstable (12 miles east), Faversham (5 miles east) and Minster (7 miles north).

Near you in Rodmersham

Locally, jobs take us to homes and businesses close to The Sittingbourne School and Cromers Wood. The nearest railway station is Sittingbourne station, roughly 1.8 miles north-west. Other landmarks nearby include Bayford Court (1.6 miles north-west) and Sittingbourne Heritage Museum (1.4 miles north-west).

Map of Rodmersham © OpenStreetMap contributors

Aftercare tips

Simple care keeps the joints in good condition. We recommend:

  • Check external joints each spring
  • Fix overflowing gutters above sealed joints
  • Ask before painting over external sealant
  • Tell anyone working on the walls about the movement joints

Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.

Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage.

Quotes for external mastic in Rodmersham

The price is agreed before any work begins. It takes into account:

  • Any working-time requirements on site
  • The number of rooms or windows
  • Access and height
  • The type of sealant required

We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or email us and we will talk you through it.

Helping us quote

There’s no need for technical detail. It helps if you can tell us:

  • How many joints, rooms or windows are involved
  • The problem you’ve noticed
  • Whether it has been sealed before
  • A few pictures by email, if you can

Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or drop us an email.

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