The Mastic Doctor team standing beside their branded vans outside an office building
Aberdeen · Scotland

Mastic sealing for building owners and managing agents in Charlestown, Aberdeen

Mastic sealing in Charlestown, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.

  • Mastic failing across several blocks on an estate
  • Brittle perimeter mastic across a building
  • Leaks at window and door perimeters
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Mastic sealing across Charlestown

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

About our mastic sealing in Charlestown

In buildings from before 2000, some old mastics contain asbestos. Before we disturb it, we ask to see the asbestos register or survey, 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 brittle perimeter mastic across a building and occupiers reporting cold air round windows, across communal kitchens and washrooms, shopfronts below residential blocks and balcony and threshold joints. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Charlestown it comes down to the same thing: the right product in a properly prepared joint.

For buildings around Charlestown, we group the work to keep travel and visits down. Send addresses and photos for a quote covering the batch.

We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and we come back if anything isn’t right.

Place
Charlestown (AB12)
Wider area
Aberdeen
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

FAQs: Charlestown

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

Yes. Blocks of any size are within what we do. Photos of each elevation help us quote accurately.

Is Balmoral Business Park, near Charlestown, within your area?

Yes. Estates, retail parks and business parks around Charlestown, Balmoral Business Park among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.

How do you reach windows on upper floors?

It depends on the building. We agree access with you at quote stage so there are no surprises.

How do you handle work on occupied blocks?

The work is planned around occupiers. We agree the programme so you can notify occupiers, and entrances stay in use.

Will you just go over the old sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.

How long before the joints can be used?

The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.

Do you guarantee the mastic work?

Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.

From enquiry to sign-off

We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. Where we can, we combine work around Charlestown with other jobs nearby, to make the most of each trip. Tell us how flexible your dates are.

  1. Each block or building is walked and the failed joints recorded with the likely cause.
  2. A fixed quote follows, split by block or building if that suits you.
  3. The programme is fixed with you, including dates you can pass on to residents or tenants.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
  6. Finished joints are looked over and the 12-month guarantee confirmed.

Getting the site ready

  • Confirm the product named in the specification
  • Agree which areas must stay open
  • Tell staff and tenants when we’ll be in

Quotes

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photographs and a description will do.

Get a price

Related advice

Why it’s worth doing now in Charlestown

Leaving failed external joints lets water reach the structure behind. That can lead to damp, staining and damage to finishes, which is harder to deal with than resealing. Around smaller places like Charlestown, halls, stores and seasonal buildings may not be checked often, so a failed joint has time to cause damage. Early resealing prevents it.

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote and we’ll explain how it’s made up.

Why us?

  • Commercial sealant work since 2005
  • Constructionline member for supplier checks
  • Work carried out by CSCS-carded applicators
  • RAL and finish matching where the product range allows

See our cost guide and our accreditations and insurance.

When to call us in Charlestown

Previous repairs often sealed new mastic over old. New silicone has nothing to grip on old silicone and the repair soon fails.

Most enquiries start with something like this:

  • Leaks at window and door perimeters
  • Failed external movement joints
  • No planned programme for sealant
  • Estate-wide sealant that is simply worn out

For owners of several units at places like Balmoral Business Park, 0.7 miles to the north-east of Charlestown, one programme can deal with frame and external mastic across the lot.

What your quote should include

  • The named product and why it was chosen
  • How the joint faces will be prepared and primed
  • Health and safety accreditation such as CHAS
  • The terms of the workmanship guarantee

Choosing a commercial sealant contractor

Block-wide mastic in Charlestown

Charlestown lies within about 2 miles of the sea. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints; plan inspections around that. The east of Scotland, where Charlestown is, gets less rain than the west. Cold mornings still limit when outside mastic can go on.

Owners of student blocks near Robert Gordon University (1.7 miles north-west of Charlestown) can schedule frame and external mastic for the summer vacation. Churches, halls and community buildings such as St Mary's Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Charlestown is about 4 miles south of Aberdeen, in Aberdeen. If you’re looking for mastic sealing in Charlestown, we can help. 40 places across Aberdeen fall within our area, Charlestown among them.

We take on mastic joints across the AB12 postcode area. Close to Charlestown, our area also takes in Kincorth (1 mile north), Garthdee (2 miles north-west), Kaimhill (2 miles north), Banchory-Devenick (2 miles north-west) and Broomhill (2 miles north). Nearby towns on our patch include Aberdeen (4 miles north), Rosemount (3 miles north), Berryden (4 miles north), Ferryhill (3 miles north), New Aberdeen (3 miles north) and Dyce (8 miles north-west).

Near you in Charlestown

For rail, the closest station is Portlethen station, about 2.7 miles south of the centre. Other landmarks nearby include Gordon Highlanders Museum (2.9 miles north-west) and Aberdeen Trades Hospitals (3.3 miles north). For a walk, there’s Blue Hill and Portlethen Moss.

Map of Charlestown © OpenStreetMap contributors

General trades versus a specialist

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

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.

For managing agents and facilities managers

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

Surface by surface

Planned maintenance

Resealing can be scheduled alongside other planned works, building by building.

External movement joints

External movement joints take up expansion and contraction. Once that sealant goes, rain can reach the wall.

Accreditations

Trusted. Accredited. Insured.