Hampshire · England
External & façade joints in South Weirs, Hampshire
We cover South Weirs for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Joints pointed up with cement by mistake
- Joints where the bead has come unstuck
- Movement joints with cracked, split or missing sealant
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
About our external mastic in South Weirs
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We strip the joint back and start again. Typical jobs include cracked joints where brick meets render or frames and movement joints filled with mortar instead of sealant, on façade panels, concrete & block and brickwork movement joints.
Around South Weirs, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
All of our work is guaranteed for twelve months, in South Weirs and everywhere else we cover.
- Location
- South Weirs (SO42)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Outside joints around South Weirs
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Brockenhurst Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s. If you let a flat or house near Brockenhurst station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
South Weirs is about 4 miles north-west of Lymington, in Hampshire. For external mastic in and around South Weirs, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We’re based in Crawley and cover Hampshire. South Weirs is one of 683 towns and villages in Hampshire where we work. There’s also a page for Southampton, about 11 miles away.
We cover every part of SO42 for external mastic. If you’re just outside South Weirs, we cover Brockenhurst (1 mile north-east), Setley (1 mile east), Balmerlawn (2 miles north-east), Emery Down (4 miles north) and Lyndhurst (4 miles north). Further out, we also cover Eastleigh (15 miles north-east), Totton (8 miles north-east), Chandler's Ford (15 miles north-east), Hedge End (15 miles north-east), Lymington (4 miles south-east) and Romsey (13 miles north).
Local landmarks in South Weirs
The nearest railway station is Brockenhurst station, about 0.9 miles east. Other landmarks nearby include Lymington New Forest Hospital (3.7 miles south-east).
How it works
On the day, we look over the joints with you first. Surfaces next to the work are protected before we start. The work generally takes a few hours for a handful of joints, longer for a whole elevation. In a small place like South Weirs, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- 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.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
Get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we’ll take it from there.
Advice
Towns and villages near South Weirs
What else we do in South Weirs
Quotes for external mastic in South Weirs
We do not publish a price list. The quote depends on:
- The number of rooms or windows
- The number and length of the joints
- When we can work, for business premises
- How easy the joints are to reach
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
What we need to know
When you contact us, these details help:
- The problem you’ve noticed
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
- Roughly how big the job is
Want a quote for external mastic? Please ring 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Common questions in South Weirs
Will you come out to South Weirs?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is South Weirs in your area for external mastic?
Yes, South Weirs is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
What does external mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area.
Do you guarantee your work?
Yes, always. Each job is guaranteed for twelve months, wherever you are.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you work for letting agents?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we are fully insured.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
If you manage several properties in or around South Weirs, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
Aftercare tips
To keep the joints looking good and working properly:
- Show decorators and builders where the movement joints are
- Fix overflowing gutters above sealed joints
- Get split or bare joints resealed while the damage is small
- Walk round the building once a year and look at the joints
Don’t paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage.
Leave it or put it right?
Sealing over the top of old mastic doesn’t hold for long. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. In a small place like South Weirs, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in South Weirs
- White, clear, grey or coloured to suit, where the product allows
- Fully insured
- A sealant colour to suit the surroundings
- We agree the colour with you first
Read how sealant jobs are priced and customer reviews.
What we’re called out for in South Weirs
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
The most common problems we see are:
- Old sealant gone brittle and cracked
- Rigid filler in a joint that should flex
- Moss and dirt in joints with no sealant left
- Damp patches traced to an open external joint
For an older house near a landmark such as Church of St Saviour, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- What happens if the job turns out different
- What the cure time is
- How much experience the applicator has
- The length of the guarantee