The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Mastic Sealing in Upper Clatford

Commercial sealant work in Upper Clatford for contractors, FMs and building owners: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.

  • Estate-wide sealant that is simply worn out
  • Occupiers reporting cold air round windows
  • Patchy repairs in mismatched sealant
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Mastic sealing across Upper Clatford

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Mastic sealing in Upper Clatford

Most buildings come with mastic joints nobody has looked at since handover and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. We work on communal entrances and stairwells, window and door perimeters on blocks and external wall and movement joints, and the failures we’re asked to look at most are complaints coming in block by block and old repairs sealed over failed mastic. Facilities teams, main contractors and managing agents in Upper Clatford tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Rural conversions near places like Upper Clatford 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 covers our workmanship: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Place
Upper Clatford (SP11)
Wider area
Hampshire
Cover
12 months on our workmanship
Quotes
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What affects the price in Upper Clatford

A fixed quote reflects the actual work. It takes account of:

  • The size and state of each joint
  • Induction, permit and paperwork requirements
  • Specialist products, such as fire-rated or hygienic sealants
  • Any access equipment needed

Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.

What we need to price the job

A good diagnosis starts with the right details. Tell us:

  • Whether an asbestos survey exists
  • Any specification or named product
  • Rough lengths or quantities, or drawings if you have them
  • Access details, including height

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.

Owners, agents and contractors

If you look after buildings for someone else, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules.

Site staff or a sealant specialist?

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

Upper Clatford: questions and answers

Do you work for managing agents with blocks near Andover station?

Yes, we work for agents, landlords and housing associations with blocks of every size. Photos of each elevation help us quote accurately.

Is Upper Clatford too small for you to travel to?

Not at all. Upper Clatford is within our area. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.

How long do sealant joints last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

Is mastic sealing guaranteed?

Our workmanship carries a 12-month guarantee and we hold public liability insurance.

Do you seal on top of existing sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

How do you choose the sealant?

If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Can you reseal a whole block or estate?

Yes. Each building is inspected, quoted and scheduled in turn, and the programme can start with the worst.

For owners and agents in Upper Clatford

Upper Clatford is in the South East, one of the UK’s drier regions. External mastic still waits for dry faces and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first. Upper Clatford lies roughly 64 miles out from central London. Within reach of London, blocks run by agents and associations are common around stations; their frame mastic often ages block-wide.

For a school such as Balksbury Junior School, perimeter mastic on windows and doors is a holiday job. For owners of several units at places like Anton Business Park, 0.8 miles north-east of Upper Clatford, one programme can deal with frame and external mastic across the lot. Buildings close to stations like Andover station (to the north of Upper Clatford) are often flats over shops, with frame mastic to keep sound.

Upper Clatford is about 1 mile south-west of Andover, in Hampshire. Upper Clatford sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Hampshire coverage takes in 723 places, from busy centres to rural villages. There’s a separate page for Southampton, about 20 miles away.

We cover the SP11 postcode districts. If your site is on Sam Whites Hill, Valley Rise and Above Town or close by, we can quote for mastic joints. Close to Upper Clatford, our area also takes in Goodworth Clatford (1 mile south), Wherwell Wood (2 miles south-east), Wherwell (3 miles south-east), Cottonworth (3 miles south-east) and Fullerton (3 miles south-east). A short drive away, we cover Winchester (12 miles south-east), Chandler's Ford (15 miles south), Romsey (14 miles south), Hyde (12 miles south-east), Tidworth (8 miles north-west) and Weeke (11 miles south-east).

What’s near Upper Clatford

Around Upper Clatford, our work takes us to commercial buildings near John Hanson Community School and the streets around them. Upper Clatford’s nearest station is Andover station, roughly 1.3 miles north. Nearby you will also find Andover Museum (1.5 miles north-east) and Andover War Memorial Hospital (1.6 miles north). Not far away are Mill Lake and Anton Lakes.

Map of Upper Clatford © OpenStreetMap contributors

How a job runs

At the end of each section, the masking comes off, the area is cleaned and every joint is checked. Where the sealant needs time to cure before use, we tell you and sign the area. Rural sites near Upper Clatford may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.

  1. First we look at the mastic on each building and note what needs replacing.
  2. We send a fixed quote that sets out the joints, the products and the programme.
  3. The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Before we start on site

  • For older buildings, check the asbestos register before work
  • Send any specification or drawings in advance
  • Let us know about inductions and permits

Ask for a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Get a quick quote

Related advice

What we can’t put right

Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:

  • Materials that need asbestos testing before work
  • Leaks through the frame itself rather than the perimeter
  • Glazing that needs replacing

If you’re not sure, just speak to us on 01277 525 020 or send photos by email and we’ll give you a straight answer before you book.

Surfaces we seal

  • Communal entrances and stairwells
  • Communal kitchens and washrooms
  • Shopfronts below residential blocks
  • Window and door perimeters on blocks
  • Balcony and threshold joints
  • External wall and movement joints

Surface by surface

Estate-wide resealing programmes

Using the same products throughout keeps the estate consistent and easier to manage.

Window and door perimeters on blocks

Blocks have a mix of frame materials, and the product is matched to the frame material and the masonry. Colours are confirmed for the product used.

Accreditations

Trusted. Accredited. Insured.