Kent · England
External Mastic in Erriottwood
Movement joints in Erriottwood need attention? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Moss and dirt in joints with no sealant left
- Rain getting behind render or cladding at a joint
- Weathered mastic that no longer stretches
Erriottwood: your questions answered
Will you come out to Erriottwood?
Yes. Erriottwood is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Teynham station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
What colours does the sealant come in?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render so the joint doesn’t draw the eye.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
What is backing rod for?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back, so the joint can move.
External mastic for homes and businesses in Erriottwood
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what access is needed. We’re often asked to deal with panel joints letting water in and weathered mastic that no longer stretches, across joints between brick and frames, brickwork movement joints and concrete & block.
External sealant needs dry, clean surfaces, so work around Erriottwood is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
You get a one-year guarantee, the same in Erriottwood as everywhere else we work.
- Place
- Erriottwood (ME9)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Other services in Erriottwood
Different surfaces, different methods
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.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Have failed joints looked at early
- Don’t let climbing plants root in the sealant
- Check the sealant is paintable before painting near it
- Tell anyone working on the walls about the movement joints
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.
How we quote for external mastic
Every job gets its own quote. This is what makes a difference:
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- The number and length of the joints
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. Your quote takes all of that into account.
Asking for a quote
To help us quote quickly, let us know:
- What’s wrong with the joints now
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Where the job is, and your postcode
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 any work starts.
What external mastic looks like in Erriottwood
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Belmont House and Gardens (about 3.4 miles south-east) are a reminder that the area around Erriottwood has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
Managing a site like Lynsted and Norton Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Teynham station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Erriottwood is about 4 miles south-east of Sittingbourne, in Kent. If you need external mastic in Erriottwood, please call 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Kent, Erriottwood included. Our area takes in 922 places across Kent. Chelmsford is on our list too, about 33 miles from Erriottwood.
All of ME9 is covered for external mastic, from the main roads to the quietest streets. Whether your property is on Christophers Row and Kingsdown Road or a nearby road, our applicators can take on the job. We also cover the places around Erriottwood: Kingsdown (1 mile west), Lynsted (1 mile north), Newbury (1 mile north-west), Bapchild (1 mile north-west) and Bogle (1 mile north). Within a short drive, we also cover Maidstone (11 miles west), Ashford (12 miles south), Canterbury (13 miles east), Sittingbourne (4 miles north-west), Whitstable (11 miles east) and Faversham (5 miles east).
Landmarks near Erriottwood
Around Erriottwood, our work takes us to homes and buildings near Black Lion Public House and Doddington Place Gardens, among other places. Erriottwood’s nearest station is Teynham station, roughly 2.5 miles north-east. Well-known places in the area include Newnham Castle (1.3 miles south-east) and Sittingbourne Heritage Museum (3.2 miles north-west).
Do you need external mastic in Erriottwood?
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
The most common problems we see are:
- Old sealant gone brittle and cracked
- Joints with sealant missing in places
- Cracked joints where brick meets render or frames
- Movement joints filled with mortar instead of sealant
If you live in an older home near Church of St Peter and St Paul, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- Who turns up on the day
- What happens if they find a problem under the old sealant
- What insurance they hold
- Whether VAT is included
What we do, step by step
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Somewhere like Erriottwood 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.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us about access, such as stairs, a lift or high-level joints
- Move anything stored near the joints
Getting a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Related advice
Why deal with it now?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. Where a wall is exposed, as many are in small places like Erriottwood, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
Why Erriottwood customers choose us
- More than 20 years in sealant work
- Anti-fungal silicone where joints get wet
- Homes, businesses and hotels
- Sealant colour chosen to suit
See what affects the cost and our reviews.
Honest limits
We will always be straight with you, so here’s what sealant cannot fix:
- Cracking across the wall rather than at a joint
- Rising or penetrating damp from elsewhere in the wall
- Loose or hollow render, which needs re-rendering
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before booking.
What we seal
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Façade panels
- Joints between brick and frames