Hampshire · England
Sherfield English External Mastic
External mastic for Sherfield English, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Joints where the bead has come unstuck
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
Why it’s worth doing now in Sherfield English
Resealing a run of joints in one go is usually better than patching one at a time. Joints of the same age tend to fail together. Where a wall is exposed, as many are in small places like Sherfield English, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and agree the price before starting.
Why book with us
- White, clear, grey or coloured to suit, where the product allows
- 180+ five-star Google reviews
- A sealant colour to suit the surroundings
- Homes, businesses and hotels
See our cost guide and what customers say.
How we handle external mastic in Sherfield English
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render so the line blends in. If you’re dealing with weathered mastic that no longer stretches and rigid filler in a joint that should flex, we can help.
Older homes in small places like Sherfield English may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Sherfield English (SO51)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Do you need external mastic in Sherfield English?
Some movement joints have been pointed up with mortar by mistake. The joint can’t move, so the wall cracks somewhere else instead.
The problems people normally mention when they call include:
- Movement joints filled with mortar instead of sealant
- Sealant pulling away from one side of the joint
- Weeds or debris growing in open joints
- Weathered mastic that no longer stretches
For an older house near a landmark such as Church of St Leonard, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Comparing quotes
- What the quote includes, VAT included or not
- How the joint is cleaned and prepared
- What guarantee comes with the work
- Whether all the old sealant comes out first
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Show decorators and builders where the movement joints are
- Keep soil, plants and ivy away from the joints
- Fix overflowing gutters above sealed joints
- Check the sealant is paintable before painting near it
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal.
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Rising or penetrating damp from elsewhere in the wall
- Movement that’s more than a sealant joint can take
- Adding movement joints to masonry that has none
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Render & cladding joints
- Façade panels
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
Places near Sherfield English
More services for Sherfield English
Questions from Sherfield English
Will you come out to Sherfield English?
Yes. Sherfield English is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Mottisfont & Dunbridge station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Pointing it stops it working and can lead to cracking. A flexible sealant is the right fill.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
When is the sealant fully cured?
Cure times vary by product and the temperature. Before we leave, we’ll tell you the cure time.
Why do you put foam in the joint first?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding, so the joint can move.
How long will you be here?
That depends on the amount of work, but most jobs take anything from a few hours to several days, depending on the building. We will tell you when we quote.
What we do, step by step
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work begins. The work generally takes anything from a few hours to several days, depending on the building. In a small place like Sherfield English, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- 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
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
Walls and rooflines in Sherfield English
Historic houses like Landford Manor (about 2.2 miles south-west) are a reminder that the area around Sherfield English 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. 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.
Rented homes near Mottisfont & Dunbridge station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Sherfield English is about 5 miles west of Romsey, in Hampshire. From the centre of Sherfield English to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our Hampshire coverage runs to 683 places, Sherfield English among them. Our Southampton page covers work nearby.
Postcode districts we cover here for external mastic: SO51. You will find streets such as Graemar Lane, Eastwood and Melchet View. Other places close to Sherfield English include Carter's Clay (2 miles north-east), Lockerley (2 miles north-east), Awbridge (2 miles east), Dunbridge (3 miles north-east) and Kimbridge (3 miles north-east). Larger places within reach include Winchester (13 miles east), Eastleigh (11 miles east), Andover (15 miles north), Totton (7 miles south-east), Chandler's Ford (9 miles east) and Hedge End (14 miles south-east).
Around Sherfield English
The closest station to Sherfield English is Mottisfont & Dunbridge station, roughly 2.9 miles north-east of the centre. Well-known places in the area include Romsey Community Hospital (5 miles east). Open spaces near Sherfield English include Copythorne Common.