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

Facade and window perimeter sealing in Sundridge, Greater London

Work needed on a facade joint in Sundridge? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Cladding panel joints that have opened up
  • Previous reseals run over old sealant
  • Draughts around frames and panels
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Facade sealing for Sundridge sites

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

About our facade sealing in Sundridge

Installing framed glazing systems isn’t part of our work. We handle the sealant joints that surround those elements: the frame-to-structure perimeter, panel-to-panel joints and window and door surrounds with products suited to facade or glazing perimeter joints. If you have perimeter sealant that has split or peeled away and hard, chalky sealant that no longer flexes, we can help, on perimeter joints where frames meet the structure, cladding panel joints and stone and brick facade joints alike. Whether you call it commercial sealant work, mastic application or joint sealing, in Sundridge it comes down to the same thing: the right product in a properly prepared joint.

Building sites in London tend to be tight: small compounds, delivery slots and shared hoists and scaffold. We fit around the programme, sealing each elevation or floor as other trades hand over.

The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Sundridge (BR1, BR7, BR2)
Region
Greater London
Guarantee
A 12-month guarantee
Quotes
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026

Cost factors for facade joints

Your fixed quote is built from the real scope. It allows for:

  • The size and state of each joint
  • Quantities, in metres or numbers
  • The product specified
  • Induction, permit and paperwork requirements

We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote.

What we need to price the job

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

  • Access details, including height
  • Drawings or a marked-up plan, if available
  • The site address and postcode
  • Specification clauses that apply

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or call 01277 525 020 or email drawings and photos to discuss it first.

Contractors’ notes for Sundridge

There are several hotels within about 2 miles of Sundridge. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Site traffic in Sundridge 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.

For contractors at a college like Hadlow College, 1.7 miles to the north of Sundridge, perimeters and internal sealant are timed for the holidays. For contractors on a campus like University of Greenwich - Avery Hill, which lies north-east of Sundridge, facade and perimeter sealing has to fit around students and term dates. On a healthcare site such as Sloane Hospital, 1.4 miles to the south-west of Sundridge, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

Sundridge is about 1 mile north-east of Bromley, in Greater London. If you are looking for facade sealing in Sundridge, we can help, as we do across Greater London. Sundridge is one of 764 places in Greater London on our list for facade joints. Sites around London have their own page, about 8 miles away.

We cover the BR1, BR7 and BR2 postcode districts for facade joints. Streets here include Hawes Road, North Road and Croft Road. Sites close to Sundridge are covered too, including Plaistow (1 mile west), Grove Park (1 mile north), Downham (1 mile north-west), Chinbrook (1 mile north) and Elmstead (1 mile east). Nearby towns on our patch include London (8 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (10 miles north-west) and Shoreditch (9 miles north-west).

Local landmarks in Sundridge

We work on buildings around Elmstead Wood, Holy Trinity College Bromley and Haberdashers' Aske's Knights Academy, among other places. Sundridge has its own railway station: Sundridge Park station. Other landmarks nearby include Bromley Hospital (1.4 miles south) and Greenwich Castle (4.4 miles north). The countryside around Sundridge includes Summer Hill and Downham Woodland Walk.

Map of Sundridge © OpenStreetMap contributors

Our process

When we get to site, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before any cutting starts, and the work typically takes longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. Planning a London job such as one in Sundridge starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. We confirm the joint type, movement and the specified product.
  3. The existing bead comes out in full and the joint faces cleaned.
  4. Primer is applied where the maker specifies it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. We go over the completed work with you before leaving.

What we need from you

  • Tell us what induction or permit system the site runs
  • Point out parking and an unloading spot
  • Clear stock, furniture or equipment away from the joints

Quotes

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. For smaller jobs, photos and a description will do.

Ask for a quote

Related advice

Sundridge: questions and answers

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

Yes. We work in healthcare settings as well as offices and schools. Each area is agreed with the ward or department and the estates team in advance.

Can you work at a site such as Chartwell Business Centre, by Sundridge?

Yes. We cover Sundridge and the area around it, including industrial estates, business parks and retail parks such as Chartwell Business Centre. To start, just speak to us on 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.

How many days will you need on site?

The duration is planned around your programme and the access we’re given. You will have an expected duration with the quote.

Do you offer coloured sealant?

That depends on the product specified. Some ranges offer many colours, others very few, so we will confirm the colours available for the specified product with the quote.

Can you fit around our working hours?

Mention the site’s hours and access windows in your enquiry, and we will schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.

What site paperwork can you supply?

Each site asks for different documents, so tell us what you need and we will confirm it when we quote.

Can you find out why a window is leaking?

Yes. Photos are often enough to start, followed by a visit if needed. Failed perimeter sealant is a common cause, but not the only one, and we’ll be honest about which it is.

Honest limits

A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is one of these:

  • Providing access systems for the work
  • Damp caused by condensation inside the building
  • Joints too narrow for the movement they take, which need redesign

Not sure which it is? You can ring 01277 525 020 or use the quote form and we will tell you honestly before you book.

Surfaces we seal

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

Looking after the joints

After handover, these steps help:

  • Keep pressure washers away from fresh sealant
  • Note when each elevation was last resealed
  • Ask about asbestos in pre-2000 mastic
  • Check that rainwater leaves the facade the way it was designed to

After heavy weather, check vulnerable elevations for signs of water inside. An early report normally means a small reseal rather than a bigger repair.

Use each reseal to correct the joint: 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.

Should maintenance staff do it?

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

Why act early in Sundridge

Patch repairs over old sealant tend to come back. A full cut-out and fresh bead is the repair that holds, so you aren’t paying for the same joint twice. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.

No two sites price the same: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.

Why clients in Sundridge choose us

  • Colours chosen to suit frames, cladding or finishes where possible
  • Products installed to the manufacturer’s instructions
  • Old sealant cut out, never sealed over
  • Public liability insurance in place

See our cost guide or how we’re accredited.

Accreditations

Trusted. Accredited. Insured.