Hampshire · England
External Mastic in Boldre
External mastic in Boldre from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Movement joints with cracked, split or missing sealant
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
When it is not the sealant
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Loose or hollow render, which needs re-rendering
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
External mastic in Boldre
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 colour to suit. We are often asked to deal with hard, crazed mastic that has stopped moving and sealant pulling away from one side of the joint, on render & cladding joints, concrete & block and brickwork movement joints.
In a village or hamlet like Boldre, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Boldre (SO41)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Boldre
Also in Boldre
Common questions in Boldre
Is Boldre within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Does living near the coast affect external mastic in Boldre?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Can landlords and businesses book you?
Yes. Domestic, commercial and hotel work are all part of what we do, and we are fully insured.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
How long does external mastic take?
It depends on the size of the job, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We will tell you when we quote.
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.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
Can tenants book the work?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Surface by 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 where it can be done safely.
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind.
What we are called out for in Boldre
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
If you can see any of these, it’s time to have the joints looked at:
- Weathered mastic that no longer stretches
- Panel joints letting water in
- Movement joints filled with mortar instead of sealant
- Joints where the bead has come unstuck
For an older house near a landmark such as Saint Nicholas Chapel, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
What to look for in a quote
- What insurance they hold
- What happens if they find a problem under the old sealant
- Whether they seal over old material or remove it
- The length of the guarantee
The process
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before any work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Boldre, access is often the only tricky part. 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.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
Get a quote
Getting a quote is simple: let us know what needs doing and where and its rough size. A few pictures by email make the job easier to understand.
Read more
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Deal with leaking gutters that soak the joints below
- Make sure movement joints are not pointed over
- Show decorators and builders where the movement joints are
- Ask before painting over external sealant
Only paint over the joint if we’ve confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage.
What affects the quote in Boldre
Every job gets its own quote. This is what makes a difference:
- How many rooms, windows or areas are involved
- The size of the job
- Any working-time requirements on site
- Any mould that needs treating
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
What we need to know
What to tell us when you ask for a quote:
- The problem you’ve noticed
- Any previous sealing or DIY work
- Where the job is, and your postcode
- Pictures of the joints, sent by email
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear quote before any work starts.
What external mastic looks like in Boldre
Boldre is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Lymington Town station? Then split movement joints are easy to miss on a rental until damp shows inside. For site and facilities teams at buildings such as William Gilpin Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Boldre is about 2 miles north of Lymington, in Hampshire. Across the SO41 area, we cover external mastic for homes and businesses. Across Hampshire, we cover 683 places, and Boldre is one of them. You can also see our page for Southampton, about 12 miles away.
Every address in SO41 is within our area for external mastic. That includes homes and businesses on Tweed Lane, Boldre Lane and Rope Hill and the roads around them. We also cover the places around Boldre: Warborne (1 mile south-east), Battramsley (1 mile north-west), Pilley (1 mile east), Sandy Down (1 mile north-west) and Mount Pleasant (1 mile west). Larger places within reach include Totton (10 miles north), Hedge End (14 miles north-east), Romsey (15 miles north), Hythe (9 miles north-east), New Milton (5 miles west) and Ringwood (11 miles north-west).
Near you in Boldre
Locally, jobs take us to homes and businesses close to Southlands School, The Red Lion Inn and Priestlands School, among other places. The nearest railway station is Lymington Town station, about 1.5 miles south-east. Other landmarks nearby include St Barbe Museum and Art Gallery (1.5 miles south) and Lymington New Forest Hospital (0.8 miles south). Green spaces nearby include Boldre Foreshore.