Hampshire · England
External Mastic in Penton Corner
External mastic for Penton Corner, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Weathered mastic that no longer stretches
- Panel joints letting water in
- Plants rooting in failed movement joints
What external mastic looks like in Penton Corner
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Portway Junior School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. In the older streets around Holy Trinity Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Penton Corner is about 2 miles west of Andover, in Hampshire. Homes, rented property, offices and hotels in Penton Corner can book us for external mastic. The work is guaranteed for a year. Our Hampshire coverage runs to 683 places, and Penton Corner is one of them. You can also see our page for Southampton, roughly 21 miles from Penton Corner.
Our applicators cover all of SP11 for external mastic. Whether your property is on Short Lane and Beech Close or anywhere close by, our applicators can take on the job. Close by, we work in Penton Grafton (1 mile north), Penton Mewsey (1 mile north), Red Post Bridge (1 mile south), Foxcotte (1 mile north-east) and Charlton (1 mile east). Further out, we also cover Winchester (14 miles south-east), Romsey (15 miles south), Hyde (14 miles south-east), Tidworth (6 miles west), Weeke (13 miles south-east) and Stanmore (14 miles south-east).
Local landmarks in Penton Corner
We work in homes and buildings around Harrow Way Community School and White Hart Public House and the streets around them. The nearest railway station is Andover station, roughly 1.6 miles east. Nearby you’ll also find Andover Museum (2.3 miles east) and Andover War Memorial Hospital (1.5 miles east). Not far away are Quarley Hill and Anton Lakes.
External mastic for homes and businesses in Penton Corner
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. We work on render & cladding joints, concrete & block and joints between brick and frames, and people most often call us about joints where the bead has come unstuck and failed sealant between panels on a façade.
Around Penton Corner, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or email us.
- Where
- Penton Corner (SP11)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When to call us in Penton Corner
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Most people get in touch after spotting one of these:
- Movement joints filled with mortar instead of sealant
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
- Old sealant gone brittle and cracked
Letting a property close to Andover station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What your quote should include
- Are they insured?
- What product goes in the joint
- What happens if they find a problem under the old sealant
- Which colour the sealant will be
Common questions in Penton Corner
Can you help a landlord with a rental near Andover station?
Yes. We work for landlords and letting agents as well as householders. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Is Penton Corner within the area you cover?
Yes, Penton Corner is covered. 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.
When will the joints need doing again?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Is the work guaranteed?
Yes, for a year. If anything is not right with the work within the year, let us know and we will sort it.
How much does external mastic cost in Penton Corner?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or drop us an email with a short description of the job.
What is backing rod for?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only.
Also near Penton Corner
Other services in Penton Corner
Why it’s worth doing now in Penton Corner
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render, so the damage spreads beyond the joint. In a small place like Penton Corner, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us and we will talk you through it.
Why book with us
- A sealant colour to suit the surroundings
- Every job guaranteed for a year
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
Take a look at our cost guide and what customers say.
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so the movement is taken up.
When it is not the sealant
We’d rather tell you now than do work that will not last, so these are the limits:
- Walls that need new movement joints cut into them
- Structural movement, which needs a surveyor or engineer
- Cracks in the bricks or render themselves, away from the joints
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
- Render & cladding joints
- Façade panels
How it works
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on the building. Somewhere like Penton Corner needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- 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.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
How to get a quote
For external mastic in Penton Corner, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Work for landlords, hotels and businesses
If you manage several properties in or around Penton Corner, several properties can be quoted together. Send us the addresses and the work at each.
Letting agents and landlords in Penton Corner can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
What affects the cost of external mastic
We do not publish a price list, because no two jobs are the same. The quote depends on:
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
- The size of the job
- Whether there’s mould to deal with
Combining jobs into one visit is generally more efficient than separate visits. We will give you a clear quote for the lot.
Asking for a quote
When you contact us, it’s useful to know:
- Roughly how big the job is
- How we’d reach the joints
- If someone has resealed it before
- What’s wrong with the joints now
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or send us an email and describe the job, and photos are welcome.