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

Facade Sealing contractors in Paddington

Facade joint and window perimeter sealing on commercial buildings in Paddington and across Greater London. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Damp patches beside frames after rain
  • Facade joints cracked through the middle
  • Gaps between rainscreen or cladding panels
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Facade sealing near Paddington

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

Facade sealing in Paddington

We seal window and door perimeters, cladding panel joints, external facade joints and perimeter joints where frames meet the structure on commercial buildings in Paddington. Where sealant is the specified fix, we also take on coping and flashing joints. If you have weathered facade joints that have lost their grip and air leaks through failed facade joints, we can put it right, on window and door perimeters, perimeter joints where frames meet the structure and cladding panel joints alike. For commercial sealant work in Paddington, you deal with one contact from quote to sign-off, whether it’s one building or several.

The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Paddington must meet its standards or pay the daily charge. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Place
Paddington (W2, W1H, W1U)
Wider area
Greater London
Cover
A 12-month guarantee
Quotes
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

From enquiry to sign-off

Working in a building that stays open takes some planning. We sign and contain the area we’re in, keep walkways clear and move on in phases so staff and visitors can carry on around us. All of Greater London is in the ULEZ, and kerbside space in Paddington can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. We start with photographs, drawings or a visit to see the joints and agree access.
  2. Product choice follows the joint’s movement and substrate.
  3. The existing bead comes out in full.
  4. Primer is applied where the maker specifies it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. The finished joints are checked with you.

Before we start on site

  • Point out any areas we must not close
  • Have the specification and drawings to hand
  • Flag any permit to work we’ll need

Getting a fixed quote

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.

Get a price

Read more

Looking after the joints

After handover, these steps help:

  • Confirm the survey covers external sealants in older buildings
  • Avoid harsh cleaners on facade sealant
  • Never let anyone seal over old sealant
  • Combine resealing with other works that need access

Include facade joints in your planned maintenance inspections. Signs to look for are cracking, edges lifting, chalking and stiffness.

Use each reseal to correct the joint: correct depth, proper backing and a sealant that can take the movement. Repeating a faulty detail just repeats the failure.

When to bring in a specialist

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Facades, frames and programmes in Paddington

Paddington has plenty of hotels close by, all within 2 miles. Hotel extensions and refits typically have to fit around bookings, so mastic dates are tight. Site traffic in Paddington falls within London’s ULEZ, like everywhere else in Greater London. Deliveries are booked and storage is tight, so mastic materials come in as needed.

Extensions at sites like St Mary's Hospital, under half a mile to the west of Paddington, normally sit beside working departments, and the mastic follows strict access rules. Work at a hotel such as Belvedere Hotel, less than half a mile south of Paddington, tends to be programmed around bookings, mastic included.

Paddington is about 1 mile west of City of Westminster, in Greater London. If you’re looking for facade sealing in Paddington, we can help. Paddington is one of 764 places in Greater London on our list.

Business premises anywhere in W2, W1H and W1U are within our area for facade joints. For a building on Harrow Road, Craven Road and Harbet Road or nearby, send details and we’ll quote for facade joints. Being close to the A5 and A40, Paddington is straightforward for us to reach. Close to Paddington, our area also takes in Paddington Green (1 mile north-west), Hyde Park Estate (1 mile south-east), Connaught Village (1 mile south-east), Tyburn (1 mile south-east) and Little Venice (1 mile north-west). A short drive away, we cover London (4 miles east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).

Landmarks near Paddington

Recent enquiries here include premises near Royal Society of Medicine Library, Fountains Abbey pub and Royal Parks of London, among other places. Nearby too are North Westminster Community School (under half a mile north-east) and Hampden Gurney CofE Primary School (under half a mile east). There’s a railway station in Paddington itself: London Paddington station. Nearby you’ll also find Harrods (1.3 miles south) and London Toy & Model Museum (0.5 miles south-west). Not far away are Greville Place nature reserve and The Long Water.

Map of Paddington © OpenStreetMap contributors

What happens if it’s left?

Patch repairs over old sealant tend to come back. A full cut-out and reseal costs more on the day but lasts much longer, so you aren’t paying for the same joint twice. In Paddington, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.

A quote for facade joints depends on how many there are, their condition and the access. Call for a quote.

Why clients in Paddington choose us

  • Constructionline member for supplier checks
  • Old sealant cut out, never sealed over
  • One number for every site we cover
  • A range of standard colours, depending on the product

Take a look at how commercial sealant jobs are priced and our accreditations and insurance.

Common questions from Paddington clients

Will you plan work around the academic year at somewhere like Imperial College London?

Yes. We plan campus work around teaching, exams and residence turnarounds. Let us know which documents your site asks for, and we will confirm them alongside the quote.

Do you work in London buildings with loading restrictions?

Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it

Can you work on upper floors?

That varies with the building and the access on offer. When you call 01277 525 020 or send details through our quote form, describe the access, and we’ll agree the approach together.

What site paperwork can you supply?

Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm them with the quote.

How long does a job like this take?

We plan the time on site around your programme and access. You’ll have an expected duration with the quote.

Can you work in cold or wet weather?

Year-round work is possible as long as joints are dry and temperatures suit the product. Frost and condensation on glass and steel are common on winter mornings, and we build that into the programme.

Do you hold CHAS accreditation?

Yes. We are CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.

What we are called out for in Paddington

Overlaying old sealant is a common shortcut that fails quickly. Cured silicone won’t accept a new silicone bead, so the new bead peels away within a season or two.

What tends to prompt an enquiry:

  • Failed seals around shopfront and entrance frames
  • Leaks at window and door perimeters
  • Discoloured or dirty facade joints
  • Cladding panel joints that have opened up

Recladding or extending a unit at a site like Brompton Cross District Shopping Centre. (to the south of Paddington) brings panel joints and frame perimeters into the programme.

What your quote should include

  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • The named product and why it was chosen
  • Will CSCS-carded applicators be on site?
  • Their plan for phasing and protecting the area

How to choose a sealant contractor

Quoting for work in Paddington

There’s no standard rate for sealant work, since sites vary so much. What we take into account:

  • Which sealant the job calls for
  • Any access equipment needed
  • Distance, for remote addresses
  • Working within restricted access windows

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

What to include in your enquiry

We can often quote from photos and a few details. It helps to include:

  • Photos of the joints, close up and from further back
  • Rough lengths or quantities, or drawings if you have them
  • What the building is and how it’s used
  • 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 phone 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Accreditations

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