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

St Mary Bourne mastic sealing

Mastic sealing for St Mary Bourne, from a contractor working since 2005. Fully insured, with a 12-month guarantee.

  • Leaks at window and door perimeters
  • Old repairs sealed over failed mastic
  • Open joints in brickwork or panels
1
Send details
Send the specification, photos or a marked-up plan.
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
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
£5m public liability

Need mastic sealing in St Mary Bourne?

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

About our mastic sealing in St Mary Bourne

We work for building owners, landlords with commercial or block portfolios, managing agents and housing associations. A planned, building-by-building programme often works better than reacting to each complaint and we quote and schedule each building in turn. The enquiries we see most involve movement joints with sealant missing and draughts at frames across a block, on shopfronts below residential blocks, balcony and threshold joints and communal kitchens and washrooms. One point of contact handles commercial sealant work in St Mary Bourne from the first photographs to the final walk-round, for single jobs and planned programmes alike.

Around smaller places like St Mary Bourne, older walls fitted with newer windows are a familiar sight. The mastic needs to suit an irregular masonry face and the look of the building.

We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.

Location
St Mary Bourne (SP11)
Region
Hampshire
Guarantee
12 months on our workmanship
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Mastic sealing around St Mary Bourne: points for this area

The South East is one of the drier parts of the UK. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are normally where frame mastic ages first. Central London is about 59 miles from St Mary Bourne. 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 St Mary Bourne Primary School need frame and external mastic kept sound like any building. For owners of several units at places like Ardglen Industrial Estate (2.8 miles south-east of St Mary Bourne), one programme can deal with frame and external mastic across the lot.

St Mary Bourne is about 5 miles north-east of Andover, in Hampshire. Across the SP11 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Our Hampshire coverage takes in 723 places, from busy centres to rural villages. Southampton is covered too, around 23 miles from St Mary Bourne.

Anyone looking for mastic sealing in SP11 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Spring Hill Lane, Springhill and Bells Meadow. Close to St Mary Bourne, our area also takes in Binley (2 miles north), Wadwick (2 miles north-east), Hurstbourne Priors (3 miles south), Cole Henley (3 miles east) and Whitchurch (3 miles south-east). Nearby towns on our patch include Basingstoke (13 miles east), Winchester (14 miles south), Andover (5 miles south-west), Tadley (13 miles north-east), Hyde (13 miles south) and Popley (14 miles east).

Landmarks near St Mary Bourne

Around St Mary Bourne, our work takes us to commercial buildings near Coronation Arms, among other places. The nearest railway station is Whitchurch (Hampshire) station, about 2.9 miles south-east. Well-known places in the area include Finkley Down Farm Museum (3.2 miles south-west) and Andover War Memorial Hospital (4.9 miles south-west). Open spaces near St Mary Bourne include Sidown Hill and Anton Lakes.

Map of St Mary Bourne © OpenStreetMap contributors

Diagnose, treat, sign off

Tell us your site hours and access windows and we will 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. Smaller jobs around St Mary Bourne can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. First we look at the mastic on each building and note what needs replacing.
  2. You get a fixed quote, priced per building where that helps your budgeting.
  3. The programme is fixed with you, including dates you can pass on to residents or tenants.
  4. Failed mastic is removed and the faces taken back to sound, dry material.
  5. Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Getting the site ready

  • Send asbestos survey details if the building is pre-2000
  • Agree which areas must stay open
  • Let building users know which areas are affected

Get a fixed quote

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

Ask for a quote

Advice

How the quote is worked out

What shapes the price:

  • Whether old sealant has to be cut out first
  • Working within restricted access windows
  • Induction, permit and paperwork requirements
  • The total length or number of joints

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Details that help us quote

To price the job accurately, we need a clear picture of the site. Useful things to include:

  • Whether the building will be occupied during the work
  • How the joints are reached, and at what height
  • Specification clauses that apply
  • Any dates the work must fit around

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or phone 01277 525 020 or use the quote form to discuss it first.

FAQs: St Mary Bourne

Is Ardglen Industrial Estate, near St Mary Bourne, within your area?

Yes. Our area takes in St Mary Bourne and its surroundings, with estates and business parks such as Ardglen Industrial Estate included. Photos and a short description are enough for a first look.

Is St Mary Bourne too small for you to travel to?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, call the office on 01277 525 020 or send details through our quote form. Photos, drawings or a joint schedule help us quote quickly.

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, because fresh silicone will not bond with aged silicone.

When is resealing likely to be due?

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 checks let you plan resealing before leaks or damage.

Do you work with property factors and landlords?

Yes, block and estate work is a core part of what we do. We work through buildings in a planned order so you can plan around it.

Do you check for asbestos in old sealant?

In older buildings, old mastic can contain asbestos. We ask for the asbestos register or survey before work starts, and if it’s suspected, work stops until it’s tested.

For managing agents and facilities managers

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Looking after the joints

Cleaning and maintenance staff play a part too. Pass these on to them:

  • Prioritise elevations facing the weather
  • Mention RAMS, insurance or CSCS requirements up front
  • Check the asbestos register before any old mastic is disturbed
  • Log resealing dates block by block

Our workmanship is covered for 12 months, so report any failure in that time. Beyond that, routine checks spot the next round of repairs.

Budgets are easier to plan when sealant is part of planned maintenance. We can quote buildings in priority order so spending is spread.

Different surfaces, different methods

Communal areas

Low-level communal joints get damaged more than most, so they often need renewing sooner.

Planned maintenance

Mastic wears out like any building component; how fast comes down to movement, weather, UV and the product. Regular inspection is the best way to plan resealing.

Do you need mastic sealing in St Mary Bourne?

Topping up old mastic is a common shortcut. New sealant won’t grip failed sealant and the repair soon fails.

What tends to prompt an enquiry:

  • Water getting in round frames after rain
  • Draught complaints from residents or tenants
  • Worn sealant at communal door frames
  • Brittle perimeter mastic across a building

Blocks of flats and mixed-use buildings often cluster around stations such as Whitchurch (Hampshire) station, 2.9 miles to the south-east of St Mary Bourne, and their window and balcony mastic tends to age at the same rate across a building.

Before you book anyone

  • Do they follow the manufacturer’s priming guidance?
  • How they handle RAMS and site documents
  • Which product they’ll use, and why it suits the joint
  • The terms of the workmanship guarantee

Choosing a commercial sealant contractor

Accreditations

Trusted. Accredited. Insured.