Exton mastic sealing
Mastic sealing in Exton, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Old repairs sealed over failed mastic
- Leaks at window and door perimeters
- Worn sealant at communal door frames
Need mastic sealing in Exton?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Site staff or a sealant specialist?
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
About our mastic sealing in Exton
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 work stops for testing if there’s any doubt. Removing asbestos-containing material isn’t something we do. Site teams most often ask us about patchy repairs in mismatched sealant and repeated reactive repairs to the same buildings, across balcony and threshold joints, shopfronts below residential blocks and external wall and movement joints. A specialist sealant contractor works differently from a general builder: on jobs in Exton, preparation and product choice get the time they need.
In and around smaller places like Exton, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever the building.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.
- Location
- Exton (SO32)
- Region
- Hampshire
- Guarantee
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
How the job changes by surface
Communal areas
Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Tidy, sound joints keep them looking cared for.
External movement joints
Joint size and product are matched to the expected movement with the width-to-depth ratio set as the manufacturer advises.
Planned mastic for Exton portfolios
Exton sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, while the elevations that take the most sun tend to show hardened mastic first. Exton is about 57 miles from central London. Within reach of London, blocks run by agents and associations are common around stations, and window and balcony mastic on them tends to age at the same rate.
Schools and community buildings such as Meonstoke Church of England Infant School need frame and external mastic kept sound like any building. Older community buildings, Church of St Peter and St Paul among them, often have frames of mixed ages whose mastic varies. Historic properties like Hinton Ampner House (4.2 miles north of Exton) show the age of some local stock, where frame mastic must suit soft brick or stone.
Exton is about 7 miles north-west of Horndean, in Hampshire. Across the SO32 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Exton is one of 723 places we cover in Hampshire for mastic joints. Our Southampton page has more on work in that area (12 miles or so).
Anyone looking for mastic sealing in SO32 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are Shoe Lane, Church Lane and Beacon Hill Lane. Sites close to Exton are covered too, including Corhampton (1 mile south), Meonstoke (1 mile south), Brockbridge (1 mile south), Droxford (2 miles south) and Soberton (3 miles south). Bigger towns within reach include Winchester (10 miles north-west), Gosport (12 miles south), Havant (10 miles south-east), Eastleigh (10 miles west), Fareham (10 miles south) and Horndean (7 miles south-east).
Local landmarks in Exton
Around Exton, our work takes us to commercial buildings near The Shoe Inn and the streets around them. Open spaces near Exton include St Clair's Meadow and Beacon Hill.
Diagnose, treat, sign off
In a busy building, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then handed back before we move to the next. For work around Exton, we aim to finish in one visit, so photographs and measurements up front really help. That way the right products come on the day.
- We check the asbestos register for older buildings and look at the joints.
- The products and programme are set out in a fixed quote.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
Before we start on site
- For older buildings, check the asbestos register before work
- Send any specification or drawings in advance
- Move anything stored against the joints
Get a fixed quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.
Advice
FAQs: Exton
Is Exton too far out for you?
No. Places such as Exton are covered as much as the big towns. Our area covers London and the South East counties. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.
Will you price a mastic programme across our Exton portfolio?
Yes. Planned programmes across a building, block or estate are a core part of this service. Send the addresses and photographs and we’ll give a fixed quote.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
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.
How long will the new sealant last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
What guarantee do you give on resealing?
A 12-month guarantee covers our work. It covers our workmanship, not later building movement, damage or frame failures.
What paperwork can you provide?
Our credentials include CHAS, Constructionline and public liability insurance. For specific documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
Commercial clients in Exton
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.
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.
Leave it or put it right?
Failed perimeter mastic lets cold air in around frames and the windows usually get the blame. Resealing the perimeters is often the simpler fix when the frames themselves are sound. Around Exton, it’s better to renew all the failing joints at once. Send photos of each area and we’ll quote for the lot.
Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.
Why us?
- A Constructionline member, so easy to vet
- Colours confirmed for the specified product
- Colours chosen to suit frames, cladding or finishes where possible
- Over 20 years of commercial sealing
Take a look at how commercial sealant jobs are priced or our accreditations and insurance.
What affects the price in Exton
The price varies from site to site. It mainly depends on:
- Whether old sealant has to be cut out first
- Phasing around occupants
- Which sealant the job calls for
- Induction, permit and paperwork requirements
Pricing mastic joints depends on quantities, condition and access. Ask us for a fixed quote.
What to include in your enquiry
To price the job accurately, we need a clear picture of the site. Useful things to include:
- The product your specification calls for
- Photos of the joints, close up and from further back
- Where the site is, with the postcode
- Whether the building will be occupied during the work
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. To get it moving, speak to us on 01277 525 020 or email a schedule or drawings.