West Sussex · England
Whitemans Green External Mastic
Professional external mastic in and around Whitemans Green, with old sealant always removed completely and a 12-month guarantee.
- Brick movement joints where the sealant has split
- Rain getting behind render or cladding at a joint
- Weathered mastic that no longer stretches
External mastic in Whitemans Green
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the joint doesn’t stand out. We’re often asked to deal with joints where the bead has come unstuck and rigid filler in a joint that should flex, on brickwork movement joints, concrete & block and joints between brick and frames.
In a village or hamlet like Whitemans Green, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Place
- Whitemans Green (RH17)
- Region
- West Sussex
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Walk round the building once a year and look at the joints
- Deal with leaking gutters that soak the joints below
- Tell anyone working on the walls about the movement joints
- Keep movement joints as flexible joints, not mortar
Don’t paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
Act while the splits are small. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
Quotes for external mastic in Whitemans Green
We quote each job individually. These are the things that affect it:
- How easy the joints are to reach
- The amount of work
- Whether there’s mould to deal with
- The product the joint needs
Leaving a failed joint generally makes the job bigger, not smaller. If you’re unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- Whether it has been sealed before
- Roughly how big the job is
- Whether it’s a home or a business
- The problem you’ve noticed
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Landlords and agents in Whitemans Green can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Whitemans Green: your questions answered
Is Whitemans Green within the area you cover?
Yes, Whitemans Green is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Haywards Heath station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
How long does the job take?
A typical job takes a few hours to a few days, depending on the length of joint and the access. Your quote will say how long we expect yours to take.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Do you have insurance?
Yes. Full insurance covers our work.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. We pick a colour that works with both materials.
What do you need from me for a quote?
Tell us what needs doing and where, with pictures by email if possible. We will ask anything else we need to know.
Do you use backing rod?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides.
Why deal with it now?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the problem grows beyond the joint itself. Older cottages and farmhouses around Whitemans Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why book with us
- We leave the area clean and tidy
- We agree the colour with you first
- Sealant colour chosen to suit
- Experience in homes, commercial sites and hotels
Read our cost guide or our reviews.
External mastic in Whitemans Green: local notes
Historic houses like Ockenden Manor (about 0.6 miles south) are a reminder that the area around Whitemans Green has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. 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.
Rented homes near Haywards Heath station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you live in an older home near Holy Trinity Church, an extension built onto an older house moves differently, and the joint between them takes the strain. For site and facilities teams at buildings such as Holy Trinity Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Whitemans Green is about 2 miles north-west of Haywards Heath, in West Sussex. Across the RH17 area, we can carry out external mastic at your property. Whitemans Green is one of 371 places in West Sussex where we work for external mastic. You can also see our page for Crawley, roughly 7 miles from Whitemans Green.
We cover every part of RH17 for external mastic and the streets around it. We cover properties on London Road, Tollgate Lane and Ardingly Road and the roads around them. If you are just outside Whitemans Green, we cover Cuckfield (1 mile south-east), Brook Street (1 mile north), Slough Green (1 mile west), Staplefield (2 miles north-west) and Warninglid (2 miles west). Within a short drive, we also cover Crawley (7 miles north), Horsham (8 miles north-west), Burgess Hill (4 miles south), East Grinstead (10 miles north-east), Shoreham-by-Sea (13 miles south-west) and Lancing (15 miles south-west).
Local landmarks in Whitemans Green
In Whitemans Green, that means homes and buildings near The Rose And Crown Public House, Warden Park School and Warden Park School, among other places. Whitemans Green’s nearest station is Haywards Heath station, roughly 1.8 miles south-east of the centre. Nearby you will also find St Francis Hospital (2.7 miles south-east) and Cuckfield Museum (0.5 miles south). Open spaces near Whitemans Green include Blunts Wood and Paiges Meadow.
What the job involves on each surface
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind.
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
How it works
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. In a small place like Whitemans Green, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Mention if the joints have been sealed before
- For business premises, tell us about site rules or sign-in
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
We quote each job on its own. Just phone 0345 464 0079 or drop us an email with the details, and pictures are welcome.