West Sussex · England
External Mastic in Maidenbower
External mastic for Maidenbower, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Panel joints letting water in
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 work begins. The work normally takes a few hours to a few days, depending on the length of joint and the access. Parking around Maidenbower is normally easier than in a town centre, but mention any lanes, gates or long drives. 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.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Advice
How we handle external mastic in Maidenbower
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. We work on render & cladding joints, brickwork movement joints and copings & trims, and the jobs we see most are joints pointed up with cement by mistake and movement joints with cracked, split or missing sealant.
Homes around Maidenbower 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
- Maidenbower (RH10)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Walls and rooflines in Maidenbower
With historic houses such as Gravetye Manor (about 4.1 miles east) nearby, there’s older building stock in the area around Maidenbower as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Maidenbower is part of Crawley, one of the post-war new towns. Homes here were built in phases, many of them in the post-war decades, so whole streets can have gutters, trims and wall joints reaching the end of their life together.
Managing a site like Brook Infant School? Then its movement joints, gutters and trims need looking after like any other building’s. If you live in an older home near St Nicholas' Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Maidenbower is about 2 miles east of Crawley, in West Sussex. Across the RH10 area, we cover external mastic for homes and businesses. Our West Sussex coverage runs to 371 places, Maidenbower among them.
Here we cover the RH10 postcode area for external mastic. External mastic is available to properties on Holder Road, Palmer Road and Casher Road and the roads around them. If you’re just outside Maidenbower, we cover Worth (1 mile north), Three Bridges (1 mile north-west), Tilgate (1 mile west), Pound Hill (1 mile north) and Crawley (2 miles west). We also work in nearby towns such as Horsham (8 miles west), Haywards Heath (8 miles south), Burgess Hill (10 miles south), East Grinstead (6 miles east), Broadfield (3 miles west) and Billingshurst (14 miles south-west).
Landmarks near Maidenbower
Typical jobs here are in homes near Oriel High School, Tilgate Park and The Charcoal Burner pub. For rail, the closest station is Three Bridges station, about 1.1 miles north-west. A little further out are Crawley Museum (2 miles north-west) and Crawley Hospital (2.3 miles north-west). For a walk, there’s Tilgate Lake.
What we’re called out for in Maidenbower
Sometimes a movement joint was filled with mortar or a rigid filler. The joint can’t move, so the wall cracks somewhere else instead.
People usually contact us after spotting something like this:
- Panel joints letting water in
- Weathered mastic that no longer stretches
- Cracked joints where brick meets render or frames
- Plants rooting in failed movement joints
For landlords with property near Three Bridges station, split movement joints are easy to miss on a rental until damp shows inside.
Before you book anyone
- How the surfaces are prepared before sealing
- Whether they seal over old material or remove it
- Which sealant they’ll use, and why
- Who does the work, and how experienced they are
Maidenbower questions
Do you cover smaller places like Maidenbower?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Three Bridges station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Can a movement joint be filled with mortar?
No. Cement or mortar can’t stretch, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. The sealant is chosen to bond to both sides, primed where needed.
Do you use backing rod?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding.
How long will you be here?
It depends on the size of the job, but most jobs take anything from a few hours to several days, depending on the building. We will give you a better idea when we quote.
Can I add another job to the visit?
Yes, we can. More than one area can be quoted together.
Can you reach joints on upper floors?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Tell us about the building and we’ll confirm what access is needed.
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Movement that is more than a sealant joint can take
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracking across the wall rather than at a joint
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Surfaces we seal
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Façade panels
What the job involves on each surface
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so its sealant has to stay flexible.
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible.
Quotes for external mastic in Maidenbower
There’s no set price list. The quote depends on:
- The product the joint needs
- The old material and how stubborn it is
- Whether the work is at height
- Any mould that needs treating
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Asking for a quote
When you contact us, these details help:
- A few pictures by email, if you can
- The address or postcode of the job
- The type of property
- The problem you’ve noticed
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will talk you through the work and send you a clear quote.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Clear growth from the base of walls and joints
- Get split or bare joints resealed while the damage is small
- Keep movement joints as flexible joints, not mortar
- Avoid pressure-washing directly into sealant joints
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
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.