Mastic sealant contractors in South Down
Looking for mastic sealing in South Down? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Old repairs sealed over failed mastic
- Damaged joints in communal entrances and corridors
- Cracked, hardened mastic round windows on a block
Need mastic sealing in South Down?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Mastic sealing for commercial buildings in South Down
Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out and if it’s suspected, work stops until it’s tested. We don’t remove asbestos-containing materials. If you have damaged joints in communal entrances and corridors and occupiers reporting cold air round windows, we can put it right. Whether you call it commercial sealant work, mastic application or joint sealing, the work in South Down is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Rural conversions near places like South Down often set modern frames into older stone, flint or brick. Perimeter mastic there has to grip an uneven face and suit the building’s character.
The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we’re clear about what is covered before work starts.
- Location
- South Down (SO21)
- Region
- Hampshire
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
When something else is needed
A proper diagnosis includes knowing what sealant can’t do. You’ll hear from us if the cause turns out to be one of these:
- Masonry that has broken away beside the joint
- Failed window or door frames, which need a window contractor
- Misted or failed double-glazed units
Not sure which it is? You can phone 01277 525 020 or use the quote form and we will tell you honestly.
What we seal
- Communal kitchens and washrooms
- External wall and movement joints
- Balcony and threshold joints
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Shopfronts below residential blocks
Also near South Down
What else we do in South Down
Looking after buildings in and around South Down
South Down lies roughly 63 miles out from central London. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres. The South East is one of the drier parts of the UK. Outside work still depends on dry joints, while the elevations that take the most sun tend to show hardened mastic first.
If you are responsible for a building such as Church of All Saints, frame and door mastic needs the same attention as any other property. Schools and community buildings such as Twyford St Mary's Church of England Primary School need frame and external mastic kept sound like any building. If you own or manage units on a site such as Hazeley Enterprise Park, 1.5 miles to the north-east of South Down, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
South Down is about 3 miles north-east of Chandler's Ford, in Hampshire. Anywhere in SO21, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. South Down is one of 723 places in Hampshire on our list for mastic joints. For work in that direction, see our Southampton page.
Work on mastic joints is covered throughout SO21, for business premises of every kind. We cover commercial and managed buildings on Cross Way, Fairfield Road and Grove Road and the roads nearby. Close to South Down, our area also takes in Compton (1 mile north), Otterbourne (1 mile south-west), Shawford (1 mile north-east), Twyford (1 mile east) and Oliver's Battery (2 miles north). Further afield, our area takes in Winchester (3 miles north), Eastleigh (3 miles south), Fareham (13 miles south-east), Andover (15 miles north-west), Totton (10 miles south-west) and Chandler's Ford (3 miles south-west).
Local landmarks in South Down
We work on buildings around The Bridge Inn and Thornden School. For rail, the closest station is Shawford station, about 0.6 miles north-east. A little further out are Balfour Museum of Hampshire Red Cross History (2.9 miles north) and Wolvesey Castle (3.2 miles north). For a walk, there’s Twyford Down and Shawford Down.
What sets the cost
The price varies from site to site. It mainly depends on:
- Whether old sealant has to be cut out first
- Backing rod, priming and other preparation
- Access and working height
- Whether the work must be split into stages
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Details that help us quote
A few photos plus some basic facts will normally do. It helps to include:
- What the building is and how it’s used
- Anything awkward about access or site hours
- The product your specification calls for
- Drawings or a marked-up plan, if available
A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or give us a call on 01277 525 020 or send photos by email if you’d rather talk the job through.
Our process
Tell us your site hours and access windows and we’ll plan around them. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. If others near South Down need work, visits can be combined. A fixed quote is given before anything starts.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
Getting the site ready
- Let us know about inductions and permits
- Make sure the joints can be reached
- Tell staff and tenants when we’ll be in
Quotes
To get a fixed quote, call 01277 525 020 or email the details over with the site address and an outline of the work. You can also send details through our quote form.
Advice
Leave it or put it right?
Sealing over failed mastic looks tidy for a while. It doesn’t bond and normally fails within a short time. Full removal and proper preparation is what lasts. For buildings around smaller places like South Down, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.
The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote when you’re ready.
Why appoint us
- Workmanship guaranteed for 12 months
- Sealing commercial buildings since 2005
- RAL and finish matching where the product range allows
- CSCS-carded applicators
Take a look at what affects the cost or how we’re accredited.
Commercial clients in South Down
Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in South Down can sit alongside others in a wider programme across Hampshire.
How the job changes by surface
Estate-wide resealing programmes
Housing associations and agents often manage many similar blocks. We quote building by building and work through them in turn.
Commercial and mixed-use buildings
Commercial buildings have mastic at shopfronts, entrances and external joints. We work across portfolios on a planned basis.
Questions we’re asked in South Down
Is South Down too small for you to travel to?
Not at all. South Down is within our area. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.
Do you cover business parks and estates near South Down, such as Hazeley Enterprise Park?
Yes. Our area takes in South Down and its surroundings, with estates and business parks such as Hazeley Enterprise Park included. Photos and a short description are enough for a first look.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
Who decides which product is used?
Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
Do you guarantee the mastic work?
There is a 12-month guarantee on our workmanship, backed by public liability insurance.
Do you work with property factors and landlords?
Yes. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords, and we quote building by building or as a programme.