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

Mastic sealant contractors in Dirleton

Mastic sealing in Dirleton, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Brittle perimeter mastic across a building
  • The same joint failures repeated across a portfolio
  • Failed external movement joints
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Mastic sealing across Dirleton

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 Dirleton

Different joints need different sealants. Window perimeters and external joints often take a low-modulus neutral-cure silicone, while hybrid polymer sealants grip many materials and are often paintable, and colours are confirmed for whichever product is used. Site teams most often ask us about window mastic that has split and shrunk and a mix of products and colours from past repairs, across external wall and movement joints, communal entrances and stairwells and balcony and threshold joints. Whoever orders the work in Dirleton, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Around Dirleton, outside mastic waits for dry weather and the right temperature. We agree a window with some flexibility.

We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and if something we did falls short, we return to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Dirleton (EH39)
Region
East Lothian
Cover
12 months on our workmanship
Quotes
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026

Keeping the joints sound

After handover, a little attention goes a long way:

  • List the paperwork your organisation requires when you send details
  • Prioritise elevations facing the weather
  • Share the asbestos register when you send details
  • Group repairs into a planned programme

If a joint we sealed fails within 12 months, tell us and we’ll look at it. Beyond that, routine checks spot the next round of repairs.

One failed perimeter normally means others on the same building are close so a single failure is a sign to check the rest. A planned reseal saves repeated visits.

When something else is needed

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • Roof leaks, gutters or failed flashings that aren’t sealant joints
  • Failed window or door frames, which need a window contractor
  • Masonry that has broken away beside the joint

If you are not sure, just call 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Where we work in Dirleton

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

Your questions answered

Will you take on a block within reach of North Berwick station?

Yes, we work for agents, landlords and housing associations with blocks of every size. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.

Does the sea air around Dirleton change the choice of sealant?

It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We check the specified product suits the exposure and pay close attention to preparation.

Can you send RAMS and CSCS details before starting?

Our credentials include CHAS, Constructionline and public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

Can people stay in the building while you reseal?

The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told and communal access is kept open.

How do you reach windows on upper floors?

It depends on the building. How upper joints are reached is agreed before work is booked so there are no surprises.

How many days will you need on site?

That varies with the scale of the job, though a typical visit usually takes a day or two for a single block, longer for an estate programme. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Is mastic sealing guaranteed?

There is a 12-month guarantee on our workmanship and we hold public liability insurance.

Mastic sealing in Dirleton: the local picture

Dirleton sits close to the coast, within about 2 miles. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first; plan inspections around that. Two care or nursing homes sit less than 2 miles from Dirleton. Owners of care premises can bring window and door mastic into a phased programme planned around the home.

For a school such as North Berwick High School, perimeter mastic on windows and doors is a holiday job. If you look after a block within reach of North Berwick station, which lies east of Dirleton, frame and balcony mastic can be renewed on one programme.

Dirleton is about 6 miles north of Haddington, in East Lothian. Looking for mastic sealing in Dirleton? We can help. Dirleton is one of 48 places we cover in East Lothian. For work in that direction, see our Edinburgh page (18 miles or so).

Work on mastic joints is covered throughout EH39, for business premises of every kind. We cover commercial and managed buildings on Station Road, The Paddock and Manse Road and the roads nearby. If your building is just outside Dirleton, we cover Kingston (1 mile south-east), Gullane (2 miles south-west), North Berwick (2 miles east), Drem (3 miles south) and Aberlady (4 miles south-west). Nearby towns on our patch include Musselburgh (13 miles south-west), Haddington (6 miles south), Dunbar (11 miles east), Tranent (10 miles south-west), Prestonpans (10 miles south-west) and Cockenzie and Port Seton (9 miles south-west).

Local landmarks in Dirleton

Dirleton’s nearest station is North Berwick station, roughly 2 miles east of the centre. Well-known places in the area include Edington Cottage Hospital (2.5 miles east) and Dick Galloway Archery Museum (1.4 miles south). For a walk, there’s North Berwick Law and Marl Loch.

Map of Dirleton © OpenStreetMap contributors

How the job changes by surface

Communal areas

Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Fresh joints make shared areas look looked after.

Commercial and mixed-use buildings

Landlords with commercial portfolios have shopfronts, office entrances and external joints to look after. A planned programme suits multi-building portfolios.

For managing agents and facilities managers

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

Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.

Diagnose, treat, sign off

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. Travel to smaller Scottish places like Dirleton is planned so the job is finished in one visit where possible, which is why we ask for photos and a full list first. External joints need a dry spell as well.

  1. A building-by-building inspection lists the failed joints.
  2. You get a fixed quote, per block or for the whole programme.
  3. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. We check the finished work and confirm the guarantee.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Warn occupants and staff about the work
  • Agree which areas must stay open

Get a fixed quote

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, call 01277 525 020 or send photos by email.

Ask for a quote

Related advice

When to call us in Dirleton

Much failed sealant was laid on dirty, dusty or damp surfaces. Without clean, sound faces and a primer where the product needs one, the bead peels off one side.

Any of the following is a good reason to get the joints checked over:

  • Movement joints with sealant missing
  • Worn sealant at communal door frames
  • Mastic failing across several blocks on an estate
  • Complaints coming in block by block

If you are responsible for a building such as Dirleton Parish Church Hall, frame and door mastic needs the same attention as any other property.

Comparing quotes

  • Whether primer will be used where the manufacturer specifies it
  • Their plan for phasing and protecting the area
  • What site paperwork they can supply
  • What level of public liability insurance do they hold?

Questions to ask before you appoint anyone

Accreditations

Trusted. Accredited. Insured.