Hampshire · England
Bashley External Mastic
Specialist external mastic for Bashley: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Old sealant gone brittle and cracked
- Movement joints with cracked, split or missing sealant
- Damp patches traced to an open external joint
What we do, step by step
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take a few hours to a few days, depending on the length of joint and the access. In a small place like Bashley, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Where the joints are inside, avoid wetting them before we arrive
- Clear the area around the work
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.
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External mastic for homes and businesses in Bashley
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. If you have leaking joints around cladding and façade panels and movement joints with cracked, split or missing sealant, we can help, on brickwork movement joints, render & cladding joints and façade panels alike.
Somewhere as small as Bashley, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Our work is backed for twelve months, and the guarantee is the same wherever you are.

- Where
- Bashley (BH25)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Quotes for external mastic in Bashley
There’s no set price list, because no two jobs are the same. The quote depends on:
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
- How many rooms, windows or areas are involved
- Whether the work is at height
The cost depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The rough size of the job
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Landlords, agents and businesses in Bashley
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed 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 one-year guarantee.
What the job involves on each surface
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.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it so the sealant is not too deep.
FAQs for Bashley
Is external mastic in a coastal place like Bashley any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Is Bashley within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is it OK to fill a movement joint with cement?
No. Cement or mortar can’t stretch. If it has already been filled, we can usually cut it out and reseal it.
Do you have insurance?
Yes. We’re fully insured.
Can landlords and businesses book you?
Yes. As well as householders, we work for landlords, agents, businesses and hotels.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
What else we do in Bashley
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Render that’s blown, hollow or coming away
- Walls that need new movement joints cut into them
- Movement that’s more than a sealant joint can take
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
Surfaces we seal
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Render & cladding joints
Common problems we fix in Bashley
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Keep an eye out for these signs:
- Gaps where render, brick and frames meet
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
- Failed sealant between panels on a façade
Rented homes near New Milton station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- What product goes in the joint
- Are they insured?
- How long to leave it before use
- How the surfaces are prepared before sealing
Bashley buildings and the weather
Bashley is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Historic houses like Highcliffe Castle (about 3.5 miles south-west) are a reminder that the area around Bashley has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
In the older streets around St John, an extension built onto an older house moves differently, and the joint between them takes the strain. Managing a site like Ballard School? Then larger buildings have long runs of movement joint that eventually need resealing.
Bashley is in Hampshire. We carry out external mastic for homes and businesses in Bashley and the surrounding area, as part of our work across Hampshire. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. We also work in Southampton, around 15 miles away.
Here we cover the BH25 postcode area for external mastic. External mastic is available to properties on St Johns Road, Ossemsley South Drive and Bashley Road and the roads around them. If you are just outside Bashley, we cover Ossemsley (1 mile north-west), Wootton (1 mile north-west), Ashley (1 mile south-east), Tiptoe (1 mile east) and Mead End (1 mile north-east). Within a short drive, we also cover Totton (12 miles north-east), Lymington (5 miles east), Hythe (13 miles north-east), Ringwood (7 miles north-west), Dibden Purlieu (12 miles north-east) and Marchwood (12 miles north-east).
Near you in Bashley
Typical jobs here are in homes near The Arnewood School, The Rising Sun pub and Tiptoe Primary School. The closest station to Bashley is New Milton station, roughly 1.3 miles south of the centre. Other landmarks nearby include Lymington New Forest Hospital (5 miles east) and Sammy Miller Motorcycle Museum (0.9 miles south-west). Open spaces near Bashley include Milford on Sea LNR.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Check external joints each spring
- Tell anyone working on the walls about the movement joints
- Avoid pressure-washing directly into sealant joints
- Keep soil, plants and ivy away from the joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
