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

Facade Sealing contractors in Seal

Need facade sealing in Seal? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Gaps between rainscreen or cladding panels
  • Leaks at window and door perimeters
  • Facade joints cracked through the middle
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Facade sealing for Seal sites

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

Why deal with it now?

The longer a failed joint is left, the more the substrate suffers: wet edges break down, so repairs may be needed before resealing. Early action keeps it simple. Older rural buildings around Seal move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

We don’t publish prices, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.

What you get with us

  • One contact handling all your sites
  • Colour options checked against the specified product
  • Constructionline member
  • 12 months’ guarantee on every job

Read our cost guide or our accreditations and insurance.

Facade sealing in Seal, done properly

Most facade joint failures trace back to the joint, not just the sealant. Joint width needs to match how far the joint moves and how far the sealant can stretch, while rod fixes the depth and stops the bead sticking to the rear with the ratio the sealant maker recommends, often around 2:1. Most enquiries involve failed sealant on precast panel joints and failed seals around shopfront and entrance frames, on stone and brick facade joints, perimeter joints where frames meet the structure and window and door perimeters. Whoever orders the work in Seal, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Conversions of older rural buildings near smaller places such as Seal bring stone, flint, brick and timber up against new glazing. A product that grips an irregular face, with a colour that suits the building’s character, is usually what’s needed.

Our workmanship is guaranteed for 12 months. If a joint we sealed fails because of how it was installed, we come back and put it right.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Seal (TN15)
Region
Kent
Guarantee
A 12-month guarantee
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

For managing agents and facilities managers

If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

How the quote is worked out

What shapes the price:

  • Induction, permit and paperwork requirements
  • The size and state of each joint
  • The product specified
  • Working within restricted access windows

Pricing facade joints depends on how many there are, their condition and the access, plus any specification you’re working to. Call for a quote.

What to include in your enquiry

It doesn’t need to be a full survey. These details are enough to start:

  • Where the site is, with the postcode
  • The product your specification calls for
  • Rough lengths or quantities, or drawings if you have them
  • Whether an asbestos survey exists

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

Facades, frames and programmes in Seal

Seal is in the South East, one of the UK’s drier regions. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so we time external mastic for dry faces and agree it with the site team. Seal lies roughly 20 miles out from central London. Towns within reach of London tend to keep building, from flats to offices and schools, and each scheme needs its mastic sealed to programme.

When a school such as Seal Church of England Voluntary Controlled Primary School is extended or refurbished, the mastic package is often squeezed into the holidays. On a healthcare site such as Sevenoaks Hospital, 1 mile west of Seal, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

Seal is about 2 miles north-east of Sevenoaks, in Kent. Looking for facade sealing in Seal? We can help, as we do across Kent. Across Kent, 931 places are covered, Seal among them. There’s a separate page for London, roughly 20 miles from Seal.

Business premises anywhere in TN15 are within our area for facade joints. Buildings on High Street, Church Road and Jubilee Rise are within our area for facade joints. Close to Seal, our area also takes in Greatness (1 mile west), Godden Green (1 mile south), Styants Bottom (2 miles east), Stone Street (2 miles south-east) and Bitchet Green (2 miles south-east). A short drive away, we cover Maidstone (13 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (12 miles north-east), Tonbridge (7 miles south) and Northfleet (11 miles north-east).

What’s near Seal

Locally, jobs take us to sites close to Wildernesse School, Kemsing Down and The Five Bells Public House and the streets around them. Seal’s nearest station is Bat & Ball station, roughly 1.1 miles west of the centre. A little further out are Sevenoaks Hospital (1.1 miles west) and Sevenoaks Museum (1.7 miles south-west). For a walk, there’s Dryhill Nature Reserve.

Map of Seal © OpenStreetMap contributors

Common questions from Seal clients

Can you work at a site such as Bat & Ball Enterprise Centre, by Seal?

Yes, sites like Bat & Ball Enterprise Centre are within our area, along with the rest of Seal. To start, just speak to us on 01277 525 020 or email us with the unit, the joints involved and your access times.

Is Seal off your patch?

Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. Good photographs up front let us bring everything on the first visit.

Can staff carry on working while you’re here?

Usually, yes. We phase the work so most of the building stays in use.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

What about RAMS and site documents?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.

Can one quote cover more than one building?

Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.

Will rain stop the work?

Wet joints or temperatures outside the product’s range mean waiting. We plan for weather and keep you updated.

When to call us in Seal

Product choice matters: an acetoxy cure can mark stone or corrode some metals, and interior products break down outdoors. Neutral-cure, facade-grade products are what most external joints need.

Typical triggers for a call:

  • Failed seals around shopfront and entrance frames
  • Gaps between rainscreen or cladding panels
  • Cold air coming in at window perimeters
  • Water coming in around window frames

Units on estates such as Bat & Ball Enterprise Centre, 1 mile to the west of Seal, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.

Questions to ask before you book

  • How joint depth will be controlled
  • Health and safety accreditation such as CHAS
  • How long is the guarantee, and what does it include?
  • Do they follow the manufacturer’s priming guidance?

How to choose a sealant contractor

Looking after the joints

Problems stay small when the joints are checked regularly. Specifically:

  • Don’t wait for a second leak before calling
  • Brief window cleaners about newly sealed joints
  • Never let anyone seal over old sealant
  • Inspect facade joints on a regular cycle

Blocked sills and gutters push water at the joints. Sealant copes better when water runs off the facade as designed rather than sitting against the joints.

Get the joint design right when resealing: correct depth, proper backing and a sealant that can take the movement. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Our process

Tell us your site hours and access windows and we’ll plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For work around Seal, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. We look at the joints, the drawings and the access before pricing.
  2. The old bead is cut away completely, not overlaid.
  3. Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
  4. Closed-cell rod fixes the depth, and the sealant grips two sides only.
  5. A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
  6. We walk the finished joints with you before handing over.

Getting the site ready

  • Point out any areas we must not close
  • Confirm the product named in the specification
  • Let building users know which areas are affected

Ask for a quote

Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to speak to us on 01277 525 020 or send photos by email.

Ask for a quote

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