Hampshire · England
External & façade joints in Ashley Heath, Hampshire
Professional external mastic in and around Ashley Heath, with every bit of old sealant taken out first and a one-year guarantee.
- Joints with sealant missing in places
- Panel joints letting water in
- Sealant that has lost its bond to the brick or render
When it is not the sealant
In fairness, there are a few things sealant will not fix:
- Damp that is not coming from the joint
- Cracks in the bricks or render themselves, away from the joints
- Adding movement joints to masonry that has none
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before you book.
Joints and surfaces we work on
- Façade panels
- Copings & trims
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
External mastic in Ashley Heath
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Common call-outs are for movement joints filled with mortar instead of sealant and sealant that has lost its bond to the brick or render, across render & cladding joints, joints between brick and frames and brickwork movement joints.
Homes around Ashley Heath 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.
Each job carries a 12-month guarantee.
- Place
- Ashley Heath (BH24)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Ashley Heath
Other services in Ashley Heath
Ashley Heath buildings and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to All Saints include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Ashley Heath is in Hampshire. Wherever you are in the BH24 postcode area, our applicators can take on external mastic. Across Hampshire, we cover 683 places, Ashley Heath among them. We also work in Southampton, around 20 miles away.
Postcode districts we cover here for external mastic: BH24. If you need external mastic at a property on Woolsbridge Road, The Glade and Hill Way or a nearby road, our applicators can take on the job. If you are just outside Ashley Heath, we cover St Ives (1 mile east), St Leonards (1 mile south), Avon Castle (2 miles south-east) and Matchams (2 miles south-east). We also work in nearby towns such as Lymington (14 miles south-east), New Milton (10 miles south-east), Ringwood (3 miles east), Barton on Sea (10 miles south-east), Ashley (10 miles south-east) and Milford on Sea (13 miles south-east).
Near you in Ashley Heath
Around Ashley Heath, our work takes us to homes and buildings near Ringwood Waldorf School, Ringwood School and Avon Heath Country Park, among other places. Well-known places in the area include St Leonard's Hospital (1.6 miles south-west). For a walk, there’s Linbrook Lake and Blashford Lakes.
What happens on the day
On the day, we start by going over the job with you. We protect the surfaces around the joints before any work starts. The work generally takes a few hours to a few days, depending on the length of joint and the access. A visit to Ashley Heath is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- 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.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Mention any parking rules near the property
- Clear items away from the joints we’re working on
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job.
Advice
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Ashley Heath questions
Do you cover Ashley Heath for external mastic?
Yes. Our work covers London and the South East, and Ashley Heath is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
What guarantee comes with external mastic in Ashley Heath?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Do you have insurance?
Yes. Mr Mastic is fully insured.
How do you reach high-level joints?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Can I add another job to the visit?
Yes. Just list everything you need.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
How often do external joints need resealing?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
What is backing rod for?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
What we are called out for in Ashley Heath
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
Most people get in touch when they notice something like this:
- Joints pointed up with cement by mistake
- Weeds or debris growing in open joints
- Weathered mastic that no longer stretches
- Water getting into walls through failed joints
If you look after a building such as St Ives Primary & Nursery School, its movement joints, gutters and trims need looking after like any other building’s.
Before booking anyone
- Whether they seal over old material or remove it
- Whether the sealant suits the joint
- How the surfaces are prepared before sealing
- What happens if the job turns out different
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
Aftercare tips
So the new joints stay in good condition:
- Keep water from gutters off the wall
- Keep soil, plants and ivy away from the joints
- Wash walls gently around the sealant
- Ask before painting over external sealant
Don’t paint over the new sealant unless we have said the product is paintable. Many exterior sealants aren’t designed to be painted.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Homes in smaller places like Ashley Heath can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we will go through it with you.
Why choose Mr Mastic in Ashley Heath
- Colour agreed with you before we start
- Any old sealant cut out fully, not covered over
- 20+ years of sealant experience
- Full insurance on every job
Read our cost guide or customer reviews.