Hampshire · England
External Mastic in Lower Slackstead
Problem with your movement joints in Lower Slackstead? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Joints pointed up with cement by mistake
- Failed sealant between panels on a façade
- Water getting into walls through failed joints
Quotes for external mastic in Lower Slackstead
Some jobs are bigger than they look, and some smaller. The main factors:
- How much old sealant there is and how hard it is to remove
- How many areas need sealing
- How much there is to do
- Mould in or behind the old joints
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- If it’s domestic, commercial or a hotel
- Where the property is
- The rough size of the job
- How we’d reach the joints
Want a quote for external mastic? Please phone 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before any work starts.
External mastic in Lower Slackstead
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, so once it splits or hardens, the joint stops working and water gets in. If you’re dealing with brick movement joints where the sealant has split and old sealant gone brittle and cracked, we can help, whatever the surface.
Somewhere as small as Lower Slackstead, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Place
- Lower Slackstead (SO51)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work cannot fix
We will not take on work that will not last, so here’s what sealant can’t put right:
- Loose or hollow render, which needs re-rendering
- Damp that isn’t coming from the joint
- Cutting new joints into brickwork, which is building work rather than sealant work
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Your questions about external mastic in Lower Slackstead
Do you cover smaller places like Lower Slackstead?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Lower Slackstead in your area for external mastic?
Yes, Lower Slackstead is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear quote.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Is the work guaranteed?
Yes, always. Each job is guaranteed for twelve months.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
When will the joints need doing again?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges, and reseal at that point.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
More services for Lower Slackstead
What external mastic looks like in Lower Slackstead
Historic houses like Mottisfont Abbey (about 4.3 miles west) are a reminder that the area around Lower Slackstead has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Romsey station, split movement joints are easy to miss on a rental until damp shows inside. Homes close to Church of All Saints include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Lower Slackstead is about 3 miles north-east of Romsey, in Hampshire. For external mastic in and around Lower Slackstead, please ring 0345 464 0079 or send us an email for a quick quote. We cover Hampshire from our Crawley base. Our Hampshire coverage runs to 683 places, and Lower Slackstead is one of them. Our Southampton page covers work nearby.
We cover every part of the SO51 postcode area for external mastic. Nearby, we also carry out external mastic in Knapp (1 mile south-east), Braishfield (1 mile west), Ampfield (1 mile south), Gosport (2 miles south) and Crampmoor (2 miles south-west). We also work in nearby towns such as Winchester (6 miles north-east), Eastleigh (6 miles south-east), Andover (13 miles north), Totton (8 miles south), Chandler's Ford (4 miles south-east) and Hedge End (10 miles south-east).
Near you in Lower Slackstead
The nearest railway station is Romsey station, roughly 3.3 miles south-west. A little further out are King Johns House (3.7 miles south-west) and Romsey Community Hospital (3 miles south-west). For a walk, there’s Emer Bog and Baddesley Common.
The process
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take anything from a few hours to several days, depending on the building. Somewhere as small as Lower Slackstead, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- 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
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
Getting a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear price.
Advice
Work for landlords, hotels and businesses
We also work for property managers and facilities teams in Lower Slackstead and across Hampshire. Several sites can go on one quote, and we are fully insured for the work.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Surface by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. We choose the product to suit.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
Why act early in Lower Slackstead
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. Older cottages and farmhouses around Lower Slackstead can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
What you get with us
- Over 20 years’ experience
- Experience in homes, commercial sites and hotels
- Colour agreed with you before any work starts
- A choice of colours where the product allows