West Sussex · England
External Mastic in Sullington
External mastic for Sullington and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Damp patches traced to an open external joint
- Plants rooting in failed movement joints
- Failed seals between different materials
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we’re fully insured for the work.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
External mastic in Sullington, done properly
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Porous or awkward surfaces are primed where the sealant needs it. Typical jobs include gaps where render, brick and frames meet and leaking joints around cladding and façade panels, on brickwork movement joints, render & cladding joints and façade panels.
Outside joints can only be sealed when they’re dry, so work in Sullington is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Your job is guaranteed for a year, as with all our work.
- Place
- Sullington (RH20)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Do not let climbing plants root in the sealant
- Keep movement joints as flexible joints, not mortar
- Avoid pressure-washing directly into sealant joints
- Look over the joints every year, ideally after winter
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Resealing it early helps prevent that.
Surface by surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Why deal with it now?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Around Sullington, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why Sullington clients choose us
- Neat joints and a tidy finish
- A sealant colour to suit the surroundings
- ARBOMaster approved applicator
- Over 20 years’ experience
Nearby places to Sullington
What else we do in Sullington
What affects the quote in Sullington
We don’t publish a price list. The quote depends on:
- Whether there’s mould to deal with
- When we can work, for business premises
- The product the joint needs
- The amount of work
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 send us an email and we’ll give you an honest view and a quote.
What we need to know
To help us quote quickly, let us know:
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
If you are in Sullington and need external mastic, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
The process
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes anything from a few hours to several days, depending on the building. Somewhere as small as Sullington, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
- Clear items away from the joints we are working on
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or email us with the details.
Advice
FAQs for Sullington
Do you work for landlords with property near Amberley station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover Sullington for external mastic?
Yes, Sullington is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
How long does external mastic take?
Most jobs take a few hours to a few days, depending on the length of joint and the access. Your quote will say how long we expect yours to take.
Are you insured?
Yes. Full insurance covers our work.
What do you need from me for a quote?
A short description and the location. We will ask anything else we need to know.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
How do I get a quote for external mastic in Sullington?
Size, access and the old material all affect the cost. Ask us for a quote.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us.
Outside joints around Sullington
Historic houses like Parham House (about 2.5 miles west) are a reminder that the area around Sullington has older buildings as well as new. 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Amberley station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. In the older streets around The Parish Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain. If you look after a building such as Thakeham Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Sullington is about 6 miles north of Worthing, in West Sussex. Whether you are in the middle of Sullington or further out, external mastic is available for homes and businesses alike. We cover 371 towns and villages across West Sussex. Brighton is on our list too, around 14 miles away.
Work in RH20 is quoted and booked the same way as anywhere else. We also cover the places around Sullington: Storrington (1 mile north-west), Heath Common (1 mile north-east), Washington (1 mile east), Rock (1 mile east) and Cootham (2 miles north-west). We also work in nearby towns such as Horsham (12 miles north-east), Worthing (6 miles south), Bognor Regis (14 miles south-west), Burgess Hill (14 miles east), Littlehampton (8 miles south-west) and Shoreham-by-Sea (9 miles south-east).
Local landmarks in Sullington
We work in homes and buildings around The Anchor Inn and Rydon Community College and the streets around them. For rail, the closest station is Amberley station, roughly 4.7 miles west. Nearby you will also find The Storrington And District Museum (0.7 miles north-west) and Amberley Castle (4.5 miles west). Open spaces near Sullington include Amberley Wildbrooks RSPB Reserve and Chanctonbury Hill.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.