West Sussex · England
External & façade joints in Plaistow, West Sussex
Movement joints in Plaistow need attention? We remove the old material, prepare the joints and seal them properly.
- Movement joints filled with mortar instead of sealant
- Hard, crazed mastic that has stopped moving
- Weeds or debris growing in open joints
About our external mastic in Plaistow
On houses, flats and commercial buildings across Plaistow, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. Typical jobs include gaps where render, brick and frames meet and joints pointed up with cement by mistake, across concrete & block, brickwork movement joints and joints between brick and frames.
Older homes in small places like Plaistow may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water normally gets in.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Plaistow (RH14)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work cannot fix
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Failed render or damaged cladding panels
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you are not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
What we seal
- Concrete & block
- Render & cladding joints
- Façade panels
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
DIY sealant or a professional job?
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.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
How the job changes by surface
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Nearby places to Plaistow
More services for Plaistow
Quotes for external mastic in Plaistow
For a quick quote, just ask. The main things that affect it are:
- How much there is to do
- Mould in or behind the old joints
- Whether the work is at height
- The number of rooms or windows
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- The problem you’ve noticed
- Any access issues, like height or stairs
- Whether it’s a home or a business
- Whether it has been sealed before
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.
Walls and rooflines in Plaistow
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Holy Trinity Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Plaistow is about 11 miles west of Horsham, in West Sussex. If you need external mastic in Plaistow, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We’re based in Crawley and cover West Sussex, Plaistow included. Our area takes in 371 places across West Sussex, from the larger towns to small villages. Our Crawley page covers work nearby (17 miles or so).
Our applicators cover all of RH14 for external mastic and the streets around it. External mastic is available to properties on The Street, Loxwood Road and Oakfield. Neighbouring places we cover for external mastic include Durfold Wood (1 mile north-west), Ifold (1 mile east), Mackerel's Common (2 miles south), Loxwood (2 miles east) and Kirdford (2 miles south). Larger places within reach include Horsham (11 miles east), Storrington (11 miles south-east), Billingshurst (6 miles south-east), Bewbush (15 miles east), Roffey (12 miles east) and Southwater (10 miles east).
What’s near Plaistow
Open spaces near Plaistow include Shillinglee Lake.
Landlord and commercial work in Plaistow
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
If you manage several properties in or around Plaistow, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Your questions about external mastic in Plaistow
Can you do external mastic in Plaistow?
Yes. We work across London and the South East, and Plaistow is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will send you a clear quote.
Is there a guarantee on external mastic in Plaistow?
All our work, in Plaistow and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Can you match the colour of my brickwork?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
What does external mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You will get a clear quote before work begins.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you need external mastic in Plaistow?
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and make things worse.
Look out for any of the following:
- Damp patches traced to an open external joint
- Failed sealant between panels on a façade
- Movement joints with cracked, split or missing sealant
- Gaps where render, brick and frames meet
Schools such as Plaistow and Kirdford Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Comparing quotes
- What the quote includes, VAT included or not
- What insurance they hold
- How long the guarantee is
- How the colour is chosen
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. It normally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Plaistow needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Move anything stored near the joints
- Tell us about any water getting in
- For business premises, tell us about site rules or sign-in
How to get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.