Hampshire · England
Shobley External Mastic
Professional external mastic in and around Shobley, with every bit of old sealant taken out first and a 12-month guarantee.
- Water getting into walls through failed joints
- Joints with sealant missing in places
- Panel joints letting water in
How the job changes by surface
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
External mastic in Shobley, done properly
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what’s needed to reach them safely. Common call-outs are for movement joints with cracked, split or missing sealant and old sealant gone brittle and cracked, across joints between brick and frames, brickwork movement joints and render & cladding joints.
Around Shobley, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Shobley (BH24)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Act on the first splits you see
- Keep soil, plants and ivy away from the joints
- Tell anyone working on the walls about the movement joints
- Keep water from gutters off the wall
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
What we do, step by step
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and tidy away. Most jobs take anything from a few hours to several days, depending on the building. For a village or hamlet like Shobley, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Mention any tricky access
- Move anything stored near the joints
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
For a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
Advice
Landlords, agents and businesses in Shobley
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too in Shobley and across Hampshire. We can quote a run of properties together.
Why it’s worth doing now in Shobley
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Where a wall is exposed, as many are in small places like Shobley, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Why choose Mr Mastic in Shobley
- ARBOMaster approved applicator
- Anti-fungal silicone where joints get wet
- One-year guarantee on every job
- 4.9 on Google from 180+ five-star reviews
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Subsidence or other structural problems
- Failed render or damaged cladding panels
- Damp that isn’t coming from the joint
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Façade panels
- Brickwork movement joints
FAQs for Shobley
What guarantee comes with external mastic in Shobley?
All our work, in Shobley and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Is Shobley within the area you cover?
Yes, Shobley is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Do you have insurance?
Yes. We’re fully insured.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding, so the joint can move.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Also near Shobley
More services for Shobley
What external mastic looks like in Shobley
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Avon Tyrrell House (about 3.9 miles south) are a reminder that the area around Shobley has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Poulner Infant School, larger buildings have long runs of movement joint that eventually need resealing. In the older streets around St John the Baptist, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Shobley is about 2 miles north-east of Ringwood, in Hampshire. For external mastic in and around Shobley, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hampshire, Shobley included. Across Hampshire, we cover 683 places, and Shobley is one of them. Southampton is on our list too, around 16 miles away.
Postcode districts we cover here for external mastic: BH24. If you’re just outside Shobley, we cover Forest Corner (1 mile south-west), Hangersley (1 mile west), Foulford (1 mile south), Highwood (1 mile north-west) and Poulner (1 mile west). Larger places within reach include Totton (11 miles east), Lymington (11 miles south-east), Romsey (15 miles north-east), Hythe (15 miles east), New Milton (8 miles south-east) and Barton on Sea (9 miles south-east).
Local landmarks in Shobley
We work in homes and buildings around Ringwood School Academy. Other landmarks nearby include St Leonard's Hospital (5.7 miles south-west). Green spaces nearby include Linbrook Lake and Blashford Lakes.
What affects the quote in Shobley
The quote reflects the job in front of us. We take into account:
- Which sealant suits the joint
- The old material and how stubborn it is
- The number of rooms or windows
- The size of the job
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Roughly how big the job is
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.