West Sussex · England
External & façade joints in Strettington, West Sussex
Professional external mastic in and around Strettington, with every bit of old sealant taken out first.
- Movement joints filled with mortar instead of sealant
- Joints with sealant missing in places
- Old sealant gone brittle and cracked
What we do, step by step
A visit follows a simple pattern: we look at the joints together, protect the area around them, do the work and tidy away. It usually takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Strettington needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
- Keep children and pets away from the work area
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or send us an email.
Advice
External mastic in Strettington
On houses, flats and commercial buildings across Strettington, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. We work on joints between brick and frames, render & cladding joints and copings & trims, and the jobs we see most are joints pointed up with cement by mistake and rain getting behind render or cladding at a joint.
In a village or hamlet like Strettington, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Strettington (PO18)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
For landlords and businesses
We also work for property managers and facilities teams. Several sites can be quoted together.
Landlords and agents in Strettington can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Strettington questions
Will you come out to Strettington?
Yes, Strettington is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is Strettington in your area for external mastic?
Yes. We work across London and the South East, and Strettington is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
How long does external mastic last?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Strettington, along with the rest of our area.
How long does the job take?
Most jobs take a few hours for a handful of joints, longer for a whole elevation. Your quote will say how long we expect yours to take.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or send us an email.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces with primer where required.
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.
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out and helps it last.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Point out the joints to other trades
- Keep soil, plants and ivy away from the joints
- Fix overflowing gutters above sealed joints
- Act on the first splits you see
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
Also near Strettington
Also in Strettington
What we’re called out for in Strettington
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Keep an eye out for these signs:
- Joints where the bead has come unstuck
- Leaking joints around cladding and façade panels
- Rigid filler in a joint that should flex
- Failed seals between different materials
For landlords with property near Chichester station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- Whether all the old sealant comes out first
- Whether VAT is included
- How the surfaces are prepared before sealing
- What product goes in the joint
Honest limits
New sealant cannot fix everything, and we will tell you before any work starts. Sealant won’t put right:
- Damp that isn’t coming from the joint
- Render that is blown, hollow or coming away
- Cracked brickwork or render that needs a builder or plasterer
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Brickwork movement joints
- Façade panels
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
Outside joints around Strettington
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Goodwood House (about 0.9 miles north-west) nearby, there’s older building stock in the area around Strettington as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Boxgrove CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing. For an older house near a landmark such as St Andrew's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Strettington is about 2 miles north-east of Chichester, in West Sussex. Our applicators cover external mastic for homes and businesses in Strettington. Our area takes in 371 places across West Sussex, from the larger towns to small villages. Portsmouth is on our list too, around 15 miles away.
Work in PO18 works the same way as everywhere else we cover. Other places close to Strettington include Westerton (1 mile west), Waterbeach (1 mile north), Maudlin (1 mile south-west), Boxgrove (1 mile east) and Tangmere (1 mile south-east). We also work in nearby towns such as Worthing (15 miles east), Bognor Regis (5 miles south-east), Selsey (9 miles south), Littlehampton (9 miles east), Emsworth (9 miles west) and Rustington (10 miles east).
Near you in Strettington
Around Strettington, our work takes us to homes and buildings near The Coach And Horses Public House and Westbourne House School, among other places. The nearest railway station is Chichester station, about 2.8 miles south-west. Well-known places in the area include The Chichester City Museum (2.4 miles south-west) and Chichester Centre (1.9 miles south-west). Green spaces nearby include Levin Down and Kingley Vale National Nature Reserve.