West Sussex · England
External Mastic in Rowfant
External mastic across Rowfant and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Gaps where render, brick and frames meet
- Weeds or debris growing in open joints
- Movement joints filled with mortar instead of sealant
How the visit 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 Rowfant 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 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.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
Asking for a quote is easy: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
Advice
About our external mastic in Rowfant
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. We work on render & cladding joints, copings & trims and joints between brick and frames, and common reasons people get in touch are panel joints letting water in and sealant that has lost its bond to the brick or render.
External sealant needs dry, clean surfaces, so work around Rowfant is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Place
- Rowfant (RH10)
- Region
- West Sussex
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for external mastic in Rowfant
There’s no set price list. What we look at:
- Any working-time requirements on site
- The old material and how stubborn it is
- The number and length of the joints
- How many areas need sealing
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, call 0345 464 0079 or send us an email and we will give you an honest view and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- Any access issues, like height or stairs
- Photos by email, if that’s easy
- Roughly how big the job is
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Places near Rowfant
More services for Rowfant
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Keep movement joints as flexible joints, not mortar
- Check external joints each spring
- Get split or bare joints resealed while the damage is small
- Leave the joints unpainted unless we have said otherwise
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Landlord and commercial work in Rowfant
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
What the job involves on each surface
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant if the joint can be cleared.
Outside joints around Rowfant
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. With historic houses such as Gravetye Manor (about 2.7 miles south-east) nearby, there’s older building stock in the area around Rowfant 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.
If you let a flat or house near Three Bridges station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Managing a site like Turners Hill CofE Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to All Saints Parish Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Rowfant is about 4 miles east of Crawley, in West Sussex. Anywhere in RH10, we can carry out external mastic at your property. Across West Sussex, we cover 371 places, and Rowfant is one of them.
Our applicators cover all of RH10 for external mastic and the streets around it. Neighbouring places we cover for external mastic include Copthorne (2 miles north-west), Worth (2 miles west), Pound Hill (2 miles west), Maidenbower (2 miles south-west) and Keeper's Corner (2 miles north). We also work in nearby towns such as Crawley (4 miles west), Horsham (10 miles west), Haywards Heath (8 miles south), Burgess Hill (11 miles south), East Grinstead (4 miles east) and Broadfield (5 miles west).
Landmarks near Rowfant
The closest station to Rowfant is Three Bridges station, about 2.6 miles west. Nearby you’ll also find County Mall (3.6 miles west) and Langley Green Hospital (4 miles west). For a walk, there’s Hedgecourt Lake.
What we cannot put right
It helps to know what we can’t do:
- Structural movement, which needs a surveyor or engineer
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Façade panels
Common questions in Rowfant
Is Rowfant within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Three Bridges station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Can you quote for more than one area?
Yes. Just list everything you need and we will quote it together.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Should I try it myself first?
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.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.