Hampshire · England
External Mastic in Upper Common
Sealing brickwork movement joints, render, cladding and façade joints in Upper Common, with a 12-month guarantee on every job. Call for a quick quote.
- Water getting into walls through failed joints
- Joints pointed up with cement by mistake
- Cracked joints where brick meets render or frames
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Cracked brickwork or render that needs a builder or plasterer
- Rising or penetrating damp from elsewhere in the wall
- Cutting new joints into brickwork, which is building work rather than sealant work
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.
Joints and surfaces we work on
- Copings & trims
- Façade panels
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
External mastic for homes and businesses in Upper Common
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. If you’re dealing with leaking joints around cladding and façade panels and failed seals between different materials, we can help.
Somewhere as small as Upper Common, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Your job is guaranteed for a year, as with all our work.
- Location
- Upper Common (RG25)
- Region
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Upper Common
What else we do in Upper Common
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
If you manage several properties in or around Upper Common, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Upper Common: your questions answered
Will you come out to Upper Common?
Yes. Upper Common 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.
Can you do external mastic in Upper Common?
Yes, Upper Common is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear quote.
How long does external mastic take?
That depends on the amount of work, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We will tell you when we quote.
Do you have insurance?
Yes, we’re fully insured.
I’m a tenant. Can you help?
Of course. Ask your landlord first, and we can send them the quote if that helps.
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.
Can landlords and businesses book you?
Yes, regularly. Several properties can be quoted together, and between tenancies is a good time for the work.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses.
Looking after it afterwards
After the cure time, these simple habits help:
- Have failed joints looked at early
- Keep water from gutters off the wall
- Avoid pressure-washing directly into sealant joints
- Tell anyone working on the walls about the movement joints
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.
How it works
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes anything from a few hours to several days, depending on the building from start to finish. For a village or hamlet like Upper Common, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Mention if the joints have been sealed before
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Every job is quoted individually. Just phone 0345 464 0079 or email us with the details and send photos if you have them.
Advice
How the job changes by surface
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and helps it last.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
External mastic in Upper Common: local notes
With historic houses such as Hall Place (about 3.9 miles south-east) nearby, there’s older building stock in the area around Upper Common as well as newer homes. 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.
Homes close to Church of St. Martin include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. Letting a property close to Basingstoke station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Upper Common is about 4 miles south of Basingstoke, in Hampshire. We carry out external mastic for householders, landlords and businesses in Upper Common and nearby. Across Hampshire, we cover 683 places, and Upper Common is one of them. Reading is on our list too, around 18 miles away.
Postcode districts we cover here for external mastic: RG25. We also cover the places around Upper Common: Ellisfield (1 mile north-east), Cliddesden (2 miles north), Nashes Green (3 miles east), Viables (3 miles north) and Eastrop (4 miles north). Within a short drive, we also cover Basingstoke (4 miles north), Winchester (14 miles south-west), Fleet (12 miles north-east), Aldershot (15 miles east), Alton (6 miles south-east) and Petersfield (15 miles south-east).
Landmarks near Upper Common
We work in homes and buildings around The Fox pub and the streets around them. For rail, the closest station is Basingstoke station, roughly 4.4 miles north of the centre. Other landmarks nearby include Barton Castle (4.6 miles south) and Gliding Heritage Centre (3.5 miles south-east). Open spaces near Upper Common include Farleigh Hill.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Quotes for external mastic in Upper Common
There’s no set price list, because no two jobs are the same. What we look at:
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- The number and length of the joints
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and give you a clear quote before any work starts.
Asking for a quote
To help us quote quickly, please include:
- The rough size of the job
- Where the job is, and your postcode
- Any access issues, like height or stairs
- Any previous sealing or DIY work
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.