Hampshire · England
External & façade joints in Bagnum, Hampshire
Our applicators work in Bagnum on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Old sealant gone brittle and cracked
- Movement joints filled with mortar instead of sealant
- Joints with sealant missing in places
How we handle external mastic in Bagnum
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. Typical jobs include rain getting behind render or cladding at a joint and movement joints filled with mortar instead of sealant, across joints between brick and frames, copings & trims and render & cladding joints.
External sealant needs dry, clean surfaces, so work around Bagnum is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Every job is covered by our one-year guarantee.
- Location
- Bagnum (BH24)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Common problems we fix in Bagnum
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
If you can see any of these, it’s time to have the joints looked at:
- Joints with sealant missing in places
- Plants rooting in failed movement joints
- Joints pointed up with cement by mistake
- Sealant that has lost its bond to the brick or render
Managing a site like Ringwood School? Then larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- Whether all the old sealant comes out first
- What the cure time is
- What preparation is included
- Who turns up on the day
Towns and villages near Bagnum
More services for Bagnum
Outside joints around Bagnum
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Avon Tyrrell House (about 1.7 miles south-east) nearby, there’s older building stock in the area around Bagnum 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.
Avon Tyrrell House, about 1.7 miles south-east, is one of the historic houses in the wider area around Bagnum.
Bagnum is about 2 miles south-east of Ringwood, in Hampshire. We provide external mastic to homes and businesses in Bagnum 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. Our Southampton page covers work nearby (17 miles or so).
Here we cover the BH24 postcode area for external mastic. Neighbouring places we cover for external mastic include Crow (1 mile north), Upper Kingston (1 mile north-west), Hightown (1 mile north), Foulford (2 miles north) and Ringwood (2 miles north-west). Within a short drive, we also cover Totton (13 miles north-east), Lymington (10 miles south-east), New Milton (6 miles south-east), Barton on Sea (7 miles south-east), Dibden Purlieu (15 miles east) and Marchwood (14 miles east).
Near you in Bagnum
A little further out are St Leonard's Hospital (4.4 miles west). Open spaces near Bagnum include St Catherine's Hill and Linbrook Lake.
Leave it or put it right?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the damage spreads beyond the joint. Where a wall is exposed, as many are in small places like Bagnum, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email and we will talk you through it.
Why Bagnum clients choose us
- We never seal over old sealant
- Every job guaranteed for a year
- Rated 4.9 stars on Google
- A sealant colour to suit the surroundings
See our cost guide or customer reviews.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Never let anyone fill a movement joint with mortar
- Have failed joints looked at early
- Fix overflowing gutters above sealed joints
- Wash walls gently around the sealant
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Bagnum questions
Is Bagnum in your area for external mastic?
Yes, Bagnum is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
What guarantee comes with external mastic in Bagnum?
All our work, in Bagnum and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint.
How long should I leave it?
Cure times vary by product and the temperature. We tell you how long to leave it before we go.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How do I get a quote for external mastic in Bagnum?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or email us and tell us what needs doing and where.
Do the sealants smell?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Do you work for landlords and businesses?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across Hampshire.
How we quote for external mastic
Every job gets its own quote. These are the things that affect it:
- When we can work, for business premises
- Access and height
- Any mould that needs treating
- The size of the job
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Helping us quote
When you contact us, it’s useful to know:
- Photos by email, if that is easy
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- Roughly how big the job is
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
When it is not the sealant
It helps to know what we can’t do too:
- Walls that need new movement joints cut into them
- Cracked brickwork or render that needs a builder or plasterer
- Loose or hollow render, which needs re-rendering
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Render & cladding joints
- Façade panels
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access, and the area is left clean. Somewhere as small as Bagnum, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
Get a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Advice
Should I try it myself first?
A careful DIYer can reseal a simple joint, 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.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.