Hampshire · England
Ashurst Bridge External Mastic
Sealing brickwork movement joints, render, cladding and façade joints in Ashurst Bridge, with a one-year guarantee on every job. Ask us for a quote.
- Joints with sealant missing in places
- Water getting into walls through failed joints
- Movement joints filled with mortar instead of sealant
External mastic in Ashurst Bridge
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the line blends in. We are often asked to deal with leaking joints around cladding and façade panels and plants rooting in failed movement joints, on façade panels, render & cladding joints and concrete & block.
Outside joints can only be sealed when they’re dry, so work in Ashurst Bridge is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Each job carries a 12-month guarantee.
- Where
- Ashurst Bridge (SO40)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Ashurst Bridge
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last. Around Ashurst Bridge, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or drop us an email.
Why choose Mr Mastic in Ashurst Bridge
- 180+ five-star Google reviews
- Fully insured
- ARBOMaster approved applicator
- Colour picked to suit the job
Read our cost guide or our reviews.
Surface by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Ashurst Bridge and across Hampshire. Several sites can be quoted together, and we’re fully insured for the work.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What we do, step by step
You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the building for a typical job. Somewhere like Ashurst Bridge needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Getting a quote
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or send us an email with the details and send pictures if you have them.
Advice
Your questions about external mastic in Ashurst Bridge
Do you cover smaller places like Ashurst Bridge?
Yes. Ashurst Bridge is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Does living near the coast affect external mastic in Ashurst Bridge?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little.
What is a movement joint?
Walls move with heat, cold and moisture, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Can landlords and businesses book you?
Yes, we do. We work in homes, commercial premises and hotels, and we are fully insured.
Will it make a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides.
Is it OK to fill a movement joint with cement?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
What sealant work cannot fix
It helps to know what we cannot do too:
- Cracks in the bricks or render themselves, away from the joints
- Subsidence or other structural problems
- Adding movement joints to masonry that has none
If in doubt, call 0345 464 0079 or email us and we will say what we think before booking.
What we seal
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Façade panels
Also in Ashurst Bridge
Aftercare tips
Good habits help new joints last longer. A few tips:
- Check external joints each spring
- Point out the joints to other trades
- Never let anyone fill a movement joint with mortar
- Avoid pressure-washing directly into sealant joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
Walls and rooflines in Ashurst Bridge
Ashurst Bridge is close to 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. Historic houses like Southampton Tudor House and Garden (about 4.8 miles east) are a reminder that the area around Ashurst Bridge has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
In the older streets around Church of St Matthew, an extension built onto an older house moves differently, and the joint between them takes the strain. For landlords with property near Totton station, outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like Hazel Wood Infant School? Then its movement joints, gutters and trims need looking after like any other building’s.
Ashurst Bridge is about 1 mile south-west of Totton, in Hampshire. For external mastic in and around Ashurst Bridge, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We are based in Crawley and cover Hampshire. Ashurst Bridge is one of 683 towns and villages in Hampshire we cover for external mastic.
Postcode districts we cover here for external mastic: SO40. Nearby, we also carry out external mastic in Netley Marsh (1 mile north-west), Totton (1 mile north-east), Hounsdown (1 mile south-east), Woodlands (1 mile south-west) and Winsor (2 miles north-west). Further out, we also cover Winchester (13 miles north-east), Eastleigh (8 miles north-east), Fareham (14 miles east), Chandler's Ford (8 miles north-east), Hedge End (9 miles east) and Lymington (11 miles south).
Around Ashurst Bridge
In Ashurst Bridge, that means homes and buildings near The White Horse pub and Hounsdown School. The nearest railway station is Totton station, roughly 1.5 miles east. Nearby you’ll also find Ashurst Hospital (1.4 miles south) and National Dairy Museum (1.2 miles south). For a walk, there’s Testwood Lakes.