Hampshire · England
Rockbourne External Mastic
Problem with your movement joints in Rockbourne? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Hard, crazed mastic that has stopped moving
- Plants rooting in failed movement joints
- Leaking joints around cladding and façade panels
How we handle external mastic in Rockbourne
On houses, flats and commercial buildings across Rockbourne, 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. Common call-outs are for panel joints letting water in and rigid filler in a joint that should flex, on concrete & block, joints between brick and frames and render & cladding joints.
Somewhere as small as Rockbourne, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All our work comes with our 12-month guarantee.
- Where
- Rockbourne (SP6)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Rockbourne buildings and the weather
With historic houses such as Breamore House (about 2.4 miles east) nearby, there’s older building stock in the area around Rockbourne as well as newer homes. Where a home is older, 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 site and facilities teams at buildings such as Western Downland Church of England Aided Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Rockbourne is in Hampshire. Every kind of property in Rockbourne can book us for external mastic, old or new, large or small. The work is guaranteed for a year. We cover 683 towns and villages across Hampshire, large and small. For nearby work, see our Southampton page.
We cover every part of SP6 for external mastic. Nearby, we also carry out external mastic in Whitsbury (1 mile north-east), Damerham (2 miles south), Sandleheath (2 miles south), Ashford (3 miles south-east) and Alderholt (4 miles south). We also work in nearby towns such as Totton (15 miles east), Ringwood (9 miles south), Fordingbridge (3 miles south-east), St Leonards (9 miles south), Brockenhurst (15 miles south-east) and Poulner (8 miles south).
Landmarks near Rockbourne
We work in homes and buildings around The Cart Wheel Public House, among other places. A little further out are Fordingbridge Museum (3.3 miles south-east) and Godshill Castle Hill (3.5 miles south-east).
When something else is needed
In fairness, there are a few things sealant won’t fix:
- Failed render or damaged cladding panels
- Subsidence or other structural problems
- Rising or penetrating damp from elsewhere in the wall
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before booking.
Joints and surfaces we work on
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Copings & trims
- Concrete & block
Rockbourne questions
Will you come out to Rockbourne?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you do external mastic in Rockbourne?
Yes. Our work covers London and the South East, and Rockbourne is part of that. You can phone 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Pointing it stops it working. A flexible sealant is the right fill.
Is there a guarantee?
Yes. Every job comes with our one-year guarantee.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do you work for letting agents?
Yes. We work in homes, commercial premises and hotels, and we’re fully insured.
How do I get a quote for external mastic in Rockbourne?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
What affects the quote in Rockbourne
Every job gets its own quote. These are the things that affect it:
- The type of sealant required
- When we can work, for business premises
- How many rooms, windows or areas are involved
- The size of the job
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Asking for a quote
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job.
Aftercare tips
To keep the joints looking good and working properly:
- Look over the joints every year, ideally after winter
- Keep water from gutters off the wall
- Point out the joints to other trades
- Keep soil, plants and ivy away from the joints
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
How it works
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes a few hours for a handful of joints, longer for a whole elevation, including the tidy-up. In a small place like Rockbourne, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Read more
More services for Rockbourne
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
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.
Surface by surface
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
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.
When to call us in Rockbourne
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. The joint cannot move, so the wall cracks somewhere else instead.
Any of these means the joints need attention:
- Joints pointed up with cement by mistake
- Weathered mastic that no longer stretches
- Cracked joints where brick meets render or frames
- Movement joints with cracked, split or missing sealant
Homes close to Church of St Andrew include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Questions to ask before you book
- Is the old sealant removed completely?
- What insurance they hold
- How the surfaces are prepared before sealing
- Who turns up on the day