East Sussex · England
External Mastic in Stunts Green
We cover Stunts Green for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Failed sealant between panels on a façade
- Joints with sealant missing in places
- Movement joints filled with mortar instead of sealant
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
How we handle external mastic in Stunts Green
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. We are often asked to deal with sealant that has lost its bond to the brick or render and rigid filler in a joint that should flex, on concrete & block, façade panels and joints between brick and frames.
In a village or hamlet like Stunts Green, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
You’re covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Place
- Stunts Green (BN27)
- Wider area
- East Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Stunts Green
More services for Stunts Green
How it works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Stunts 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’ll reach them.
- Old sealant and any debris are cut and raked out.
- 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.
Before we arrive
- Clear the area around the work
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
Ask for a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll take it from there.
Related advice
Questions from Stunts Green
Do you cover smaller places like Stunts Green?
Yes. Stunts Green is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is external mastic in Stunts Green guaranteed?
All our work, in Stunts Green and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Do you work for letting agents?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we are fully insured.
How long does the job take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer, and we will say how long yours will take.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. A flexible sealant is the right fill.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used before we leave.
What affects the cost of external mastic
For a quick quote, just ask. What matters most is:
- The number of rooms or windows
- Access and height
- Which sealant suits the joint
- Working hours on commercial sites
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Asking for a quote
You don’t need to know the technical terms. Just tell us:
- Access, such as stairs, a lift or height
- The type of property
- If someone has resealed it before
- The rough size of the job
We do not publish a price list. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.
Different surfaces, different methods
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
Looking after it afterwards
After the cure time, these simple habits help:
- Keep high-pressure jets off the joints
- Tell anyone working on the walls about the movement joints
- Keep movement joints as flexible joints, not mortar
- Get split or bare joints resealed while the damage is small
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
Do you need external mastic in Stunts Green?
If plants are growing out of a joint, the sealant has usually failed or was never there. Roots and dirt hold water against the wall and speed up the damage.
Look out for these signs:
- Movement joints with cracked, split or missing sealant
- Weeds or debris growing in open joints
- Sealant that has lost its bond to the brick or render
- Damp patches traced to an open external joint
Managing a site like Herstmonceux Church of England Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
What your quote should include
- How much experience the applicator has
- How long to leave it before use
- What the quote includes, VAT included or not
- What happens if the job turns out different
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. Older cottages and farmhouses around Stunts Green can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.
Why Stunts Green customers choose us
- Tidy, careful work
- 180+ five-star Google reviews
- ARBOMaster approved applicator
- Colour picked to suit the job
See what affects the cost and our reviews.
Stunts Green 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. With historic houses such as Horselunges Manor (about 2.9 miles west) nearby, there’s older building stock in the area around Stunts Green as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Horselunges Manor, about 2.9 miles west, is one of the historic houses in the wider area around Stunts Green, and older homes nearby need a sealant that suits their walls.
Stunts Green is about 3 miles north-east of Hailsham, in East Sussex. If you need external mastic in Stunts Green, please call 0345 464 0079 or drop us an email for a quick quote. We cover East Sussex from our Crawley base. Our area takes in 289 places across East Sussex. You can also see our page for Brighton, about 20 miles away.
Here we cover the BN27 postcode area for external mastic. We also cover the places around Stunts Green: Herstmonceux (1 mile south-east), Chapel Row (1 mile south-east), Flowers Green (1 mile south-east), Golden Cross (1 mile south) and Windmill Hill (1 mile south-east). We also work in nearby towns such as Eastbourne (8 miles south), Hastings (11 miles east), Bexhill-on-Sea (7 miles south-east), Seaford (12 miles south-west), Lewes (13 miles west) and Hailsham (3 miles south-west).
Around Stunts Green
Locally, jobs take us to homes and businesses close to Woolpack Inn. A little further out are Amberstone Hospital (1.8 miles south-west) and Herstmonceux Castle (2 miles south-east).