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

Bonnyrigg facade sealing

Facade joint and window perimeter sealing on commercial buildings throughout Bonnyrigg and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Old perimeter mastic that has dried out
  • Cold air coming in at window perimeters
  • Damp patches beside frames after rain
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Facade sealing near Bonnyrigg

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Facade sealing for commercial buildings in Bonnyrigg

Sealant around windows, doors and cladding panels stops rain reaching the wall behind. Once a perimeter seal fails, water tracks in around frames and panels. We cut out failed facade joints and reseal them with a facade-grade sealant suited to the movement. We work on stone and brick facade joints, cladding panel joints and perimeter joints where frames meet the structure, and the failures we are asked to look at most are sealant pulling away from frames or panels and failed sealant on precast panel joints. For commercial sealant work in Bonnyrigg, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

Scottish towns such as Bonnyrigg see new housing, schools and health centres alongside work on older stone and harled buildings. Harled, rendered, brick and clad elevations each need a different approach to the perimeter and facade joints.

Building owners and contractors get the same cover: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Bonnyrigg (EH19, EH18, EH20)
Region
Midlothian
Guarantee
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026

Honest limits

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Joints too narrow for the movement they take, which need redesign
  • Water getting in through cracked render or porous masonry
  • Damaged frames that need replacing

Not sure which it is? You can give us a call on 01277 525 020 or send photos by email and we will tell you honestly before you book.

Where we work in Bonnyrigg

  • Cladding panel joints
  • Perimeter joints where frames meet the structure
  • Shopfront frames
  • Window and door perimeters
  • Coping and flashing joints
  • Stone and brick facade joints

Quoting for work in Bonnyrigg

Before we quote, we look at:

  • How much existing material needs removing
  • Access and working height
  • Backing rod, priming and other preparation
  • How much there is to seal

The price depends on how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote when you’re ready.

Details that help us quote

Good information means a firmer quote. When you get in touch, include:

  • How the joints are reached, and at what height
  • Rough lengths or quantities, or drawings if you have them
  • Whether the building will be occupied during the work
  • Clear photographs of the problem areas

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, phone 01277 525 020 or use the quote form.

Your questions answered

Can you take on a job at a hospital such as Midlothian Community Hospital?

Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.

Can you work around term dates at a campus such as University of Edinburgh Bioquarter?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Can staff carry on working while you’re here?

Typically, yes. Phased work can be planned so areas stay in use.

Do you replace windows or glass?

No. We don’t install glazing systems, windows or glass. We seal the joints around them, including perimeters where frames meet the structure.

Which sealant do you use on facades?

Most facade and window perimeter joints take a low-modulus neutral-cure silicone. Some joints call for hybrid, PU or polysulphide instead, as the specification or substrate requires.

Do you work to architects’ specifications?

Yes. We follow the specification, along with the manufacturer’s installation guidance.

How long does a typical visit take?

It depends on the scope, though a typical visit normally takes longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. For bigger or phased jobs, we will set out a timescale with the quote.

Owners, agents and contractors

When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Bonnyrigg can sit alongside others in a wider programme.

Why it’s worth doing now in Bonnyrigg

Failed joints let in more than water: occupants notice draughts and cold spots around windows. A new seal closes the gap for both. Wet weather and frost are hard on failed joints in a Scottish town like Bonnyrigg, and the damage spreads from there. Catch it early and it stays a sealant job.

The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

Why choose Mastic Doctor in Bonnyrigg

  • Fully insured, including public liability cover
  • Constructionline member
  • Colour options checked against the specified product
  • 12 months’ guarantee on every job

Take a look at our cost guide or how we’re accredited.

Signs you need facade sealing in Bonnyrigg

New sealant run over old sealant rarely holds. Fresh silicone won’t stick to cured silicone.

Site and facilities staff are often the first to spot these:

  • Old perimeter mastic that has dried out
  • Perimeter sealant that has split or peeled away
  • Perimeter joints where frames meet the structure
  • Discoloured or dirty facade joints

Extensions at sites like Midlothian Community Hospital, 0.8 miles north-east of Bonnyrigg, usually sit beside working departments, and the mastic follows strict access rules.

Questions to ask before you book

  • How long is the guarantee, and what does it include?
  • How they handle RAMS and site documents
  • Is the sealant right for the movement and the substrate?
  • Will CSCS-carded applicators be on site?

Choosing a commercial sealant contractor

Facade sealing in Bonnyrigg: the local picture

Bonnyrigg has a number of hotels close by, all within 2 miles. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Bonnyrigg is in the east of Scotland, which is drier than the west. Frost and condensation on frames and panels can still hold up external mastic on winter mornings. External dates keep a little give.

Units on estates such as Dalhousie Business Park, 0.9 miles south-east of Bonnyrigg, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal. University estates such as University of Edinburgh Bioquarter, 3.5 miles north of Bonnyrigg, tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal.

Bonnyrigg is about 6 miles south-east of Edinburgh, in Midlothian. Looking for facade sealing in Bonnyrigg? We can help, as we do across Midlothian. Bonnyrigg is one of 34 places in Midlothian on our list. For work in that direction, see our Edinburgh page (6 miles or so).

Work on facade joints is covered throughout EH19, EH18 and EH20, whatever the building. Buildings on Old Market Place, High Street and Church Road are within our area for facade joints. Being close to the A768 and B704, Bonnyrigg is easy to get to with materials and equipment. Sites close to Bonnyrigg are covered too, including Lasswade (1 mile north-west), Polton (1 mile west), Rosewell (2 miles south-west), Loanhead (2 miles west) and Roslin (3 miles west). Bigger towns within reach include Penicuik (5 miles south-west), Gorebridge (3 miles south-east), Mayfield (3 miles east), Shawfair (4 miles north), Danderhall (3 miles north) and Bilston (3 miles west). As one of the bigger centres in Midlothian, Bonnyrigg has a broad mix of commercial, public and industrial buildings.

Local landmarks in Bonnyrigg

Around Bonnyrigg, our work takes us to commercial buildings near Public Library and the streets around them. For rail, the closest station is Eskbank station, roughly 1.1 miles north-east. Nearby you will also find Dalhousie Castle (1.2 miles south-east) and Midlothian Community Hospital (0.8 miles north-east). Green spaces nearby include The New Leaf Co-op and Edgelaw Reservoir.

Map of Bonnyrigg © OpenStreetMap contributors

On site: what to expect

We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. In a Scottish town such as Bonnyrigg, outside work is planned around the weather and inside work around the occupants. Send photos or drawings and we’ll quote and plan to suit.

  1. First we review photos, drawings or what we saw on a visit, and agree how each joint will be reached.
  2. Failed sealant is cut out along its full length.
  3. Both faces are cleaned and, where the product needs it, primed.
  4. Backing rod, or bond-breaker tape in shallow joints, limits the depth.
  5. The new sealant goes in and is tooled firmly onto both faces.
  6. The completed runs are checked with you, then the 12-month guarantee applies.

Before we start on site

  • Send asbestos survey details if the building is pre-2000
  • Make sure the joints can be reached
  • Arrange parking or a loading space

Request a quote

Need a figure for a tender or a budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, speak to us on 01277 525 020 or send details through our quote form.

Ask for a quote

Read more

Accreditations

Trusted. Accredited. Insured.