Brighton and Hove · England
External Mastic in Whitehawk
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Whitehawk. Fully insured, ARBOMaster approved and guaranteed for a year.
- Old sealant gone brittle and cracked
- Sealant that has lost its bond to the brick or render
- Failed sealant between panels on a façade
What we can’t put right
Before you book, it’s worth knowing the limits too:
- Damp that isn’t coming from the joint
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Surfaces we seal
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Façade panels
How we handle external mastic in Whitehawk
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what’s needed to reach them safely. We work on façade panels, brickwork movement joints and concrete & block, and people most often call us about sealant pulling away from one side of the joint and water getting into walls through failed joints.
Homes around Whitehawk range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
There’s a 12-month guarantee on every job.
- Location
- Whitehawk (BN2)
- Region
- Brighton and Hove
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for external mastic in Whitehawk
Call for a quick quote. The main things that affect it are:
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- How many areas need sealing
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
What we need to know
When you call or email, these details help:
- Access, such as stairs, a lift or height
- Roughly how big the job is
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will take it from there.
Nearby places to Whitehawk
What else we do in Whitehawk
Whitehawk questions
Does the coastal weather in Whitehawk 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.
Do you work for landlords with property near Brighton station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Do you guarantee your work?
Yes. Every job comes with our one-year guarantee.
Can you reach joints on upper floors?
It depends on the height and the site. Ground-floor joints are simple; for higher work, tell us about the building and we will confirm what’s needed.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint.
Do you work in Whitehawk?
Yes. We are based in Crawley and work across South East England, London and Scotland, and that includes Whitehawk.
What the job involves on each surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
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.
What happens on the day
Once we are on site, 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. A visit to Whitehawk is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Tell us about any water getting in
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
Getting a quote
We do not publish a price list, because every job is different. Instead, we give you a clear price for your job. To get started, call 0345 464 0079 or email us.
Advice
Leave it or put it right?
Resealing a run of joints in one go is normally better than patching one at a time. They’ve weathered the same way and it means sorting access once. Around Whitehawk, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why book with us
- A 12-month guarantee on all work
- Quality sealants from Arbo and Everbuild
- We leave the area clean and tidy
- We agree the colour with you first
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Deal with leaking gutters that soak the joints below
- Point out the joints to other trades
- Wash walls gently around the sealant
- Get split or bare joints resealed while the damage is small
Don’t paint over the new sealant unless we have said the product is paintable. Many exterior sealants are not designed to be painted, and paint can crack as the joint moves.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
Landlord and commercial work in Whitehawk
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Walls and rooflines in Whitehawk
Whitehawk 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. With historic houses such as Royal Pavilion (about 1.4 miles west) nearby, there’s older building stock in the area around Whitehawk 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.
For an older house near a landmark such as St Cuthman's, older walls, gutters and the joints where extensions meet them need a flexible sealant. Rented homes near Brighton station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like City Academy Whitehawk? Then larger buildings have long runs of movement joint that eventually need resealing.
Whitehawk is about 1 mile south-east of Brighton, in Brighton and Hove. Anywhere in BN2, we cover external mastic for homes and businesses. Our area takes in 30 places across Brighton and Hove.
We cover every part of the BN2 postcode area for external mastic and the streets around it. Whether your property is on Peel Road, Manor Road and Craven Road or anywhere close by, our applicators can take on the job. Close by, we work in Kemptown (1 mile south-west), Hanover (1 mile west), Carlton Hill (1 mile west), Bevendean (1 mile north) and Brighton (1 mile north-west). Larger places within reach include Brighton and Hove (4 miles west), Hove (3 miles west), Aldrington (4 miles west), Withdean (3 miles north-west), Hangleton (5 miles north-west) and Patcham (3 miles north-west).
What’s near Whitehawk
We work in homes and buildings around St Mary's Hall, Whitehawk Hill and Longhill High School and the streets around them. Whitehawk’s nearest station is Brighton station, roughly 1.6 miles west. Other landmarks nearby include Brighton Motor Museum (0.7 miles south-west) and Royal Sussex County Hospital (0.6 miles south-west). The countryside around Whitehawk includes Newmarket Hill and Whitehawk Hill.