Hampshire · England
External & façade joints in Colden Common, Hampshire
Professional external mastic in and around Colden Common, with old sealant always removed completely and a 12-month guarantee.
- Joints where the bead has come unstuck
- Moss and dirt in joints with no sealant left
- Rain getting behind render or cladding at a joint
External mastic in Colden Common
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We strip the joint back and start again. Typical jobs include damp patches traced to an open external joint and cracked joints where brick meets render or frames, on brickwork movement joints, façade panels and copings & trims.
Outbuildings, garages and conservatories around homes in places like Colden Common add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
Every job comes with a one-year guarantee, wherever you are in Hampshire.
- Location
- Colden Common (SO21, SO50)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to several days, depending on the building, including the tidy-up. In a smaller place like Colden Common, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Move anything stored near the joints
- Mention if the joints have been sealed before
Ask for a quote
For external mastic in Colden Common, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Read more
How the job changes by surface
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
Why it’s worth doing now in Colden Common
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Homes in smaller places like Colden Common can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
What it costs depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts.
What you get with us
- White, clear, grey or coloured to suit, where the product allows
- Sanitary silicone with an anti-fungal additive in wet areas
- Fully insured
- Arbo and Everbuild products
Take a look at what affects the cost or our reviews.
Signs you need external mastic in Colden Common
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
It’s worth asking for a quote if you see:
- Panel joints letting water in
- Joints pointed up with cement by mistake
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
Managing a site like Colden Common Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- What happens if the job turns out different
- Which sealant they’ll use, and why
- What insurance they hold
- Whether they seal over old material or remove it
Your questions about external mastic in Colden Common
Will you come out to Colden Common?
Yes, Colden Common is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Shawford station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
What does external mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Where are you based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Will there be a smell?
Possibly a little. It fades as the sealant cures.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. Sealant won’t put right:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Failed render or damaged cladding panels
- Cracking across the wall rather than at a joint
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Façade panels
- Brickwork movement joints
Towns and villages near Colden Common
Other services in Colden Common
For landlords and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Quotes for external mastic in Colden Common
There’s no set price list, because no two jobs are the same. The quote depends on:
- Any mould that needs treating
- The size of the job
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and give you a clear price before work begins.
What to tell us for a quote
Before you ask for a quote, have a think about:
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
Every job is quoted individually. Just call 0345 464 0079 or email us with the details and send photos if you have them.
Colden Common buildings and the weather
With historic houses such as South Stoneham House (about 4.8 miles south-west) nearby, there’s older building stock in the area around Colden Common as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of the Holy Trinity, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you let a flat or house near Shawford station, outside joints that have cracked can let damp into a rental, so check them between lets.
Colden Common is about 2 miles north-east of Eastleigh, in Hampshire. Every kind of property in Colden Common is covered for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Hampshire, we cover 683 places, and Colden Common is one of them. Southampton is on our list too, about 6 miles from Colden Common.
Here we cover the SO21 and SO50 postcode area for external mastic. Streets in the area include St Vigor Way, Ash Close and Birch Close, and we cover them all. We also cover the places around Colden Common: Brambridge (1 mile south-west), Nob's Crook (1 mile south-east), Lord's Wood (1 mile south-west), Highbridge (1 mile south-west) and Fisher's Pond (1 mile south-east). Within a short drive, we also cover Winchester (4 miles north), Gosport (15 miles south-east), Fareham (11 miles south-east), Horndean (15 miles south-east), Totton (10 miles south-west) and Chandler's Ford (3 miles west).
Around Colden Common
Typical jobs here are in homes near Thornden School. The closest station to Colden Common is Shawford station, roughly 1.9 miles north. Well-known places in the area include Wolvesey Castle (4.4 miles north) and Eastleigh Museum (2.4 miles south-west). For a walk, there’s Shawford Down and Twyford Down.