East Sussex · England
Hellingly External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Hellingly, backed by a 12-month guarantee. Call for a quick quote.
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
How we handle external mastic in Hellingly
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We strip the joint back and start again. If you have movement joints filled with mortar instead of sealant and leaking joints around cladding and façade panels, we can put it right, whatever the surface.
Outbuildings, garages and conservatories around homes in places like Hellingly add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
You are covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Place
- Hellingly (BN27)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
FAQs for Hellingly
Do you cover Hellingly for external mastic?
Yes, Hellingly is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear quote.
Do you cover smaller places like Hellingly?
Yes, Hellingly is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few photos.
What does external mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
What is backing rod for?
That is backing rod, a closed-cell foam. It stops the sealant going in too deep and bonding to three sides, which would stop it stretching.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so the joint between them must be flexible. We choose one that suits both surfaces.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Deal with leaking gutters that soak the joints below
- Ask before painting over external sealant
- Make sure movement joints aren’t pointed over
- Do not let climbing plants root in the sealant
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint and spoil the finish.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
What affects the quote in Hellingly
Every job gets its own quote. This is what makes a difference:
- The type of sealant required
- How many areas need sealing
- The number and length of the joints
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
What we need to know
What to tell us when you ask for a quote:
- The type of property
- If someone has resealed it before
- What’s wrong with the joints now
- Any access issues, like height or stairs
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, ring 0345 464 0079 or drop us an email.
What happens if it’s left?
Sealing over the top of old mastic does not hold for long. New sealant does not bond well to old, weathered sealant, so the old joint is cut out fully first. In a smaller place like Hellingly, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Why Hellingly customers choose us
- Homes, businesses and hotels
- 180+ five-star Google reviews
- We’re fully insured
- 20+ years of sealant experience
Read our cost guide and our reviews.
Places near Hellingly
Other services in Hellingly
Do you need external mastic in Hellingly?
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
Keep an eye out for these signs:
- Sealant that has lost its bond to the brick or render
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
- Failed sealant between panels on a façade
If you look after a building such as Hawkes Farm Academy, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before you book
- What preparation is included
- Whether they seal over old material or remove it
- What insurance they hold
- Whether VAT is included
What external mastic looks like in Hellingly
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. With historic houses such as Horselunges Manor (about 0.6 miles west) nearby, there’s older building stock in the area around Hellingly 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.
If you let a flat or house near Polegate station, outside joints that have cracked can let damp into a rental, so check them between lets. Historic houses such as Horselunges Manor, about 0.6 miles west, show how far back building around Hellingly goes.
Hellingly is about 1 mile north of Hailsham, in East Sussex. Jobs in Hellingly get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Hellingly is one of 289 towns and villages in East Sussex we cover for external mastic. We also work in Brighton, around 17 miles away.
We cover every part of the BN27 postcode area for external mastic and the streets around it. Whether your property is on Station Road, Cheviot Street and Iris Close or anywhere close by, our applicators can take on the job. We also cover Upper Horsebridge (1 mile south-west), Lower Horsebridge (1 mile west), Magham Down (1 mile east), Hailsham (1 mile south) and Tile Hurst (1 mile south-west). Larger places within reach include Eastbourne (7 miles south), Hastings (13 miles east), Bexhill-on-Sea (9 miles east), Seaford (10 miles south-west), Lewes (11 miles west) and Crowborough (12 miles north).
Local landmarks in Hellingly
Typical jobs here are in homes near Hailsham Community College and the streets around them. The closest station to Hellingly is Polegate station, roughly 4.3 miles south of the centre. Other landmarks nearby include Hellingly Hospital Railway (within half a mile north) and Sussex Farm Museum (3.6 miles north).
The process
When we arrive, we look over the joints with you first. Surfaces next to the work are protected before any work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. In a smaller place like Hellingly, 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.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Tell us if parking is tricky
- Mention any leaks or damp you’ve noticed
Get a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand.
Advice
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Failed render or damaged cladding panels
- Subsidence or other structural problems
- Damp that isn’t coming from the joint
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Where we work in Hellingly
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Façade panels
- Render & cladding joints
- Joints between brick and frames
Different surfaces, different methods
Cladding and façade panels
If the façade has a specified sealant, that’s what we use or an approved alternative. Tell us what the building has when you get in touch.
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best.