East Sussex · England
External Mastic in Rushlake Green
Professional external mastic in and around Rushlake Green, with old sealant always removed completely.
- Damp patches traced to an open external joint
- Panel joints letting water in
- Failed seals between different materials
About our external mastic in Rushlake Green
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing and we use one wherever it does. We work on façade panels, copings & trims and joints between brick and frames, and people most often call us about old sealant gone brittle and cracked and failed sealant between panels on a façade.
External sealant needs dry, clean surfaces, so work around Rushlake Green is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All of our work is guaranteed for twelve months, in Rushlake Green and everywhere else we cover.
- Place
- Rushlake Green (TN21)
- Wider area
- East Sussex
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
The process
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Rushlake Green needs a little journey planning: let us know about lanes, gates and parking. 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’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- For business premises, tell us about site rules or sign-in
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
Ask for a quote
To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before we start.
Advice
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
If you manage several properties in or around Rushlake Green, several properties can be quoted together. Just tell us the addresses and what each one needs.
Can I do it myself?
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.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Walls and rooflines in Rushlake Green
With historic houses such as Bateman's (about 4.2 miles north-east) nearby, there’s older building stock in the area around Rushlake Green as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
If you look after a building such as Heathfield Community College, larger buildings have long runs of movement joint that eventually need resealing.
Rushlake Green is about 6 miles north-east of Hailsham, in East Sussex. Across the TN21 area, we cover external mastic for homes and businesses. We cover 289 towns and villages across East Sussex. For nearby work, see our Brighton page.
Here we cover the TN21 postcode area for external mastic. If you need external mastic at a property on Middle Lane, Rookery Lane and Back Lane or a nearby road, we can help. We also cover the places around Rushlake Green: Punnett's Town (1 mile north), Dallington (2 miles east), Trolliloes (2 miles south), Wood's Corner (2 miles east) and Bodle Street Green (3 miles south-east). We also work in nearby towns such as Eastbourne (11 miles south), Hastings (12 miles south-east), Bexhill-on-Sea (9 miles south-east), Seaford (15 miles south-west), Lewes (14 miles west) and Hailsham (6 miles south-west).
Near you in Rushlake Green
We work in homes and buildings around The Horse And Groom Public House, among other places. Other landmarks nearby include Sussex Farm Museum (3.3 miles west) and Hellingly Hospital (4.3 miles south-west). For a walk, there’s Selwyns Wood.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Keep water from gutters off the wall
- Tell anyone working on the walls about the movement joints
- Avoid pressure-washing directly into sealant joints
- Act on the first splits you see
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
Common problems we fix in Rushlake Green
Using the wrong sealant is another common reason. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
These are the problems we’re asked about most:
- Water getting into walls through failed joints
- Plants rooting in failed movement joints
- Brick movement joints where the sealant has split
- Leaking joints around cladding and façade panels
In the older streets around The Parish Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- What the quote includes, VAT included or not
- Whether they’re fully insured
- Is the old sealant removed completely?
- What the cure time is
Rushlake Green: your questions answered
Is Rushlake Green in your area for external mastic?
Yes. Our work covers London and the South East, and Rushlake Green is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Is there a guarantee on external mastic in Rushlake Green?
All our work, in Rushlake Green and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Can a movement joint be filled with mortar?
No. Rigid materials can’t move with the wall and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Can I add another job to the visit?
Of course. Doing several areas at once is generally more efficient.
Can you seal over the old sealant?
No, it won’t last. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Do you work for letting agents?
Yes. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Do you work at height?
Each building is different. Send us photos and a rough idea of the height.
Towns and villages near Rushlake Green
Also in Rushlake Green
Why deal with it now?
A failed movement joint lets water into the wall, behind render and cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. Where a wall is exposed, as many are in small places like Rushlake Green, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email.
What you get with us
- Homes, businesses and hotels
- A choice of colours where the product allows
- We agree the colour with you first
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at how sealant jobs are priced or what customers say.
Honest limits
A few problems are outside what sealant work can do:
- Cracks in the bricks or render themselves, away from the joints
- Render that is blown, hollow or coming away
- Adding movement joints to masonry that has none
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
Surfaces we seal
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Copings & trims