West Sussex · England
External Mastic in Slough Green
Problem with your movement joints in Slough Green? We cut out the old, prepare the joints and apply the right sealant.
- Movement joints with cracked, split or missing sealant
- Moss and dirt in joints with no sealant left
- Joints where the bead has come unstuck
How we handle external mastic in Slough Green
On houses, flats and commercial buildings across Slough Green, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. Common call-outs are for weathered mastic that no longer stretches and gaps where render, brick and frames meet, across render & cladding joints, joints between brick and frames and façade panels.
Around Slough Green, 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 one-year guarantee.
- Where
- Slough Green (RH17)
- Region
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need external mastic in Slough Green
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
The most common problems we see are:
- Leaking joints around cladding and façade panels
- Joints with sealant missing in places
- Sealant pulling away from one side of the joint
- Old sealant gone brittle and cracked
Managing a site like Warden Park School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- What happens if the job turns out different
- What insurance they hold
- What the quote includes, VAT included or not
- Who does the work, and how experienced they are
What affects the quote in Slough Green
The quote reflects the job in front of us. We take into account:
- The size of the job
- Mould in or behind the old joints
- When we can work, for business premises
- The type of sealant required
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- Where the property is
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand.
Questions from Slough Green
Is Slough Green in your area for external mastic?
Yes. Our work covers London and the South East, and Slough Green is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
Is Slough Green within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
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 pick the one that suits your wall best so the joint doesn’t draw the eye.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Slough Green, along with the rest of our area.
Can landlords and businesses book you?
Yes, regularly. Several properties can be quoted together, and between tenancies is a good time for the work.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last so it’s worth doing right. Where a wall is exposed, as many are in small places like Slough Green, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What you get with us
- Colour picked to suit the job
- Quality sealants from Arbo and Everbuild
- More than 20 years in sealant work
- White, clear, grey or coloured to suit, where the product allows
Read our cost guide or customer reviews.
Honest limits
Before booking, it’s worth knowing the limits:
- Loose or hollow render, which needs re-rendering
- Adding movement joints to masonry that has none
- Damp that isn’t coming from the joint
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Façade panels
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
Landlords, agents and businesses in Slough Green
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
If you manage several properties in or around Slough Green, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
What we do, step by step
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It generally takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Slough Green 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 checking each joint, agreeing the ones to redo and how we will reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs 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.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Clear the area around the work
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Read more
How the job changes by surface
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best year round.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so neither cracks the other.
Walls and rooflines in Slough Green
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Tyes Place (about 1.3 miles north) nearby, there’s older building stock in the area around Slough Green as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Letting a property close to Balcombe station? Then outside joints that have cracked can let damp into a rental, so check them between lets. Historic houses such as Tyes Place, about 1.3 miles north, show how far back building around Slough Green goes.
Slough Green is about 3 miles north-west of Haywards Heath, in West Sussex. If you need external mastic in Slough Green, please ring 0345 464 0079 or drop us an email for a quick quote. We cover West Sussex from our Crawley base. Slough Green is one of 371 places in West Sussex where we work for external mastic. There’s also a page for Crawley, about 6 miles away.
Work in RH17 is quoted and booked the same way as anywhere else. Neighbouring places we cover for external mastic include Whitemans Green (1 mile east), Warninglid (1 mile west), Staplefield (1 mile north), Brook Street (1 mile east) and Cuckfield (1 mile south-east). Within a short drive, we also cover Crawley (6 miles north), Horsham (7 miles north-west), Haywards Heath (3 miles south-east), Burgess Hill (5 miles south), East Grinstead (10 miles north-east) and Shoreham-by-Sea (13 miles south).
Around Slough Green
For rail, the closest station is Balcombe station, about 2.9 miles north-east. Nearby you will also find Cuckfield Museum (1.4 miles south-east) and The Dene Hospital (3.7 miles south). Green spaces nearby include Blunts Wood and Paiges Meadow.