East Sussex · England
External & façade joints in Cross in Hand, East Sussex
External mastic for Cross in Hand and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Plants rooting in failed movement joints
- Sealant that has lost its bond to the brick or render
- Rain getting behind render or cladding at a joint
External mastic in Cross in Hand, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. If you’re dealing with weeds or debris growing in open joints and joints where the bead has come unstuck, we can help, whatever the surface.
External sealant needs dry, clean surfaces, so work around Cross in Hand is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Cross in Hand (TN21)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
When we arrive, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before work begins. The work usually takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Cross in Hand 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.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
- Let us know about earlier repairs to the joints
Getting a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved and send you a clear quote.
Read more
Looking after it afterwards
After the cure time, these simple habits help:
- Avoid pressure-washing directly into sealant joints
- Point out the joints to other trades
- Walk round the building once a year and look at the joints
- Never let anyone fill a movement joint with mortar
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
Cross in Hand buildings and the weather
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Cross-in-Hand Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s. Rented homes near Buxted station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. If you live in an older home near St Bartholomew, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Cross in Hand is about 5 miles east of Uckfield, in East Sussex. We provide external mastic to homes and businesses in Cross in Hand, as part of our work across East Sussex. Our East Sussex coverage runs to 289 places, and Cross in Hand is one of them. Our Brighton page covers work nearby (18 miles or so).
Jobs for external mastic in TN21 is quoted and booked the same way as anywhere else. Local streets include Fir Grove Road, Windmill Place and Dads Hill, and we cover them all. We also cover the places around Cross in Hand: Roser's Cross (1 mile south-west), Waldron (1 mile south-west), Heathfield (2 miles east), Sandy Cross (2 miles south-east) and Lions Green (2 miles south). Larger places within reach include Eastbourne (13 miles south), Bexhill-on-Sea (14 miles south-east), Seaford (14 miles south), Lewes (11 miles south-west), Hailsham (8 miles south) and Crowborough (6 miles north).
Around Cross in Hand
Locally, jobs take us to homes and businesses close to Passingworth Park. The nearest railway station is Buxted station, roughly 3.9 miles west. Other landmarks nearby include Sussex Farm Museum (2.8 miles south) and Tickerage Castle (2.9 miles west). Green spaces nearby include Selwyns Wood.
What affects the quote in Cross in Hand
For a quick quote, just ask. The main things that affect it are:
- The number and length of the joints
- Access and height
- Whether there’s mould to deal with
- When we can work, for business premises
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
Before you ask for a quote, have a think about:
- Any previous sealing or DIY work
- Whether it’s a home or a business
- The rough size of the job
- Where the property is
Quotes start with a quick conversation. 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, call 0345 464 0079 or drop us an email.
What happens if it’s left?
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. In a small place like Cross in Hand, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us and we will talk you through it.
Why Cross in Hand customers choose us
- Tidy, careful work
- Full insurance on every job
- Arbo and Everbuild products
- 4.9 on Google from 180+ five-star reviews
Read our cost guide and what customers say.
Different surfaces, different methods
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. The old joint is removed and a sealant that bonds to both sides goes in.
Towns and villages near Cross in Hand
Other services in Cross in Hand
Landlord and commercial work in Cross in Hand
For anyone letting property in or around Cross in Hand, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Your questions about external mastic in Cross in Hand
Do you cover smaller places like Cross in Hand?
Yes, Cross in Hand is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is Cross in Hand in your area for external mastic?
Yes, Cross in Hand is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
How long does external mastic last?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges, and reseal at that point.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Can you reach joints on upper floors?
It depends on the building. Send us photos and a rough idea of the height, and we will confirm what access is needed.
Can you quote for more than one area?
Yes. Several rooms, windows or areas can go on one quote.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.