West Sussex · England
Ashington External Mastic
Problem with your movement joints in Ashington? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Failed sealant between panels on a façade
- Weathered mastic that no longer stretches
- Damp patches traced to an open external joint
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- Cracks in the bricks or render themselves, away from the joints
- Structural movement, which needs a surveyor or engineer
- Cutting new joints into brickwork, which is building work rather than sealant work
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
What we seal
- Façade panels
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
How we handle external mastic in Ashington
On houses, flats and commercial buildings across Ashington, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. We work on concrete & block, joints between brick and frames and copings & trims, and people most often call us about joints with sealant missing in places and panel joints letting water in.
External sealant needs dry, clean surfaces, so work around Ashington is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Big or small, it’s backed by our one-year guarantee in Ashington and across West Sussex.
- Location
- Ashington (RH20)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Ashington
Some movement joints have been pointed up with mortar by mistake. The joint can’t move, so the wall cracks somewhere else instead.
The most common problems we see are:
- Weeds or debris growing in open joints
- Joints with sealant missing in places
- Panel joints letting water in
- Weathered mastic that no longer stretches
If you look after a building such as Ashington CofE Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before booking
- Whether you can choose the colour
- When the joint can take water or movement
- Who does the work, and how experienced they are
- What the quote includes, VAT included or not
Leave it or put it right?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost near the open joint, so the damage spreads beyond the joint. In a small place like Ashington, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
Why us?
- Anti-fungal silicone where joints get wet
- More than 20 years in sealant work
- Domestic, commercial and hotel work
- White, clear, grey or another colour, product permitting
Take a look at how sealant jobs are priced or what customers say.
How it works
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Ashington 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 inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
Get a quote
Want a quote for external mastic? Please phone 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear quote before we start.
Related advice
Also in Ashington
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Ashington buildings and the weather
With historic houses such as Parham House (about 4.5 miles west) nearby, there’s older building stock in the area around Ashington as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Ashington Methodist Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Ashington is about 8 miles north of Worthing, in West Sussex. If you need external mastic in Ashington, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover West Sussex. Across West Sussex, we cover 371 places, Ashington among them. There’s also a page for Brighton, about 13 miles away.
All of RH20 is covered for external mastic, from the main roads to the quietest streets. Streets in the area include London Road, The Sands and Hillcrest Drive. Close by, we work in Wiston (1 mile south-east), Dial Post (3 miles north-east), Ashurst (3 miles east), Broomer's Corner (3 miles north) and Whitehall (3 miles north). We also work in nearby towns such as Crawley (15 miles north-east), Horsham (10 miles north), Worthing (8 miles south), Haywards Heath (14 miles east), Burgess Hill (12 miles east) and Littlehampton (10 miles south-west).
Near you in Ashington
Around Ashington, our work takes us to homes and buildings near Rydon Community College. Nearby you will also find The Storrington And District Museum (2.6 miles south-west). Green spaces nearby include Chanctonbury Hill and Knepp Wildland.
Ashington: your questions answered
Do you cover smaller places like Ashington?
Yes. Ashington is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is there a guarantee on external mastic in Ashington?
Every job comes with our one-year guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
How long does external mastic last?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year and renew it when it starts to fail.
Where do you work from?
We work from Crawley. Our applicators cover Ashington, along with the rest of our area.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Can you seal joints between two different materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Work for landlords, hotels and businesses
For anyone letting property in or around Ashington, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
Different surfaces, different methods
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out.