East Sussex · England
External Mastic in St Helen's
External mastic across St Helen's and nearby, with old sealant always removed completely.
- Weeds or debris growing in open joints
- Sealant that has lost its bond to the brick or render
- Rain getting behind render or cladding at a joint
Landlord and commercial work in St Helen's
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured.
Landlords and agents in St Helen's can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
External mastic for homes and businesses in St Helen's
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall. We work on brickwork movement joints, façade panels and render & cladding joints, and common reasons people get in touch are water getting into walls through failed joints and joints pointed up with cement by mistake.
Homes around St Helen's range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- St Helen's (TN34, TN37)
- Wider area
- East Sussex
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near St Helen's
More services for St Helen's
Looking after it afterwards
Aftercare is simple:
- Keep soil, plants and ivy away from the joints
- Point out the joints to other trades
- Deal with leaking gutters that soak the joints below
- Act on the first splits you see
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.
What we do, step by step
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before we start. The work generally takes anything from a few hours to several days, depending on the building. In a smaller place like St Helen's, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- 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.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any sign-in or site rules at work premises
- Tell us if parking is tricky
How to get a quote
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved and give you a clear price.
Related advice
Walls and rooflines in St Helen's
St Helen's is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around St Peter & St Paul, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like Ark Blacklands Primary Academy? Then larger buildings have long runs of movement joint that eventually need resealing.
St Helen's is about 1 mile north-east of Hastings, in East Sussex. Every kind of property in St Helen's is covered for external mastic. The work is guaranteed for a year. Our East Sussex coverage runs to 289 places, and St Helen's is one of them. For nearby work, see our Brighton page (31 miles or so).
Jobs for external mastic in TN34 and TN37 works the same way as everywhere else we cover. Streets in the area include Park Avenue, Keppel Road and Down's Road, and we cover them all. We also cover Blacklands (1 mile south), Hastings (1 mile south-west), Silverhill (1 mile south-west), Belmont (1 mile south-east) and Hollington (1 mile west). Larger places within reach include Eastbourne (14 miles south-west), Bexhill-on-Sea (5 miles west), Hailsham (14 miles west), Polegate (15 miles west), Old Town (15 miles south-west) and Heathfield (15 miles north-west).
Local landmarks in St Helen's
Typical jobs here are in homes near William Parker Sports College, University School and The Duke pub. St Helen's’s nearest station is Ore station, roughly 0.8 miles south-east. Nearby you will also find Priory Meadow Shopping Centre (1.2 miles south) and Hastings Old Town Hall Museum (1.3 miles south-east). Not far away are Church Wood and Robsack Wood and Senlac Hill.
FAQs for St Helen's
Can you help a landlord with a rental near Ore station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Does the coastal weather in St Helen's affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
When will the joints need doing again?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
How long does the job take?
That depends on the amount of work, but most jobs take a few hours for a handful of joints, longer for a whole elevation. We will tell you when we quote.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
When it is not the sealant
Sealant isn’t the answer to every problem, and we will tell you before work begins. Sealant won’t put right:
- Walls that need new movement joints cut into them
- Damp that isn’t coming from the joint
- Subsidence or other structural problems
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Joints and surfaces we work on
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
- Copings & trims
What the job involves on each surface
Cladding and façade panels
Cladding and façade panels are normally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
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.
Do you need external mastic in St Helen's?
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Keep an eye out for any of the following:
- Movement joints with cracked, split or missing sealant
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
For landlords with property near Ore station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- Who does the work, and how experienced they are
- Whether the sealant suits the joint
- How the surfaces are prepared before sealing
- How the colour is chosen