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

Facade and window perimeter sealing in Ham, Greater London

Facade joint and window perimeter sealing on commercial buildings across Ham, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Previous reseals run over old sealant
  • Cladding panel joints that have opened up
  • Weathered joints at frame-to-structure perimeters
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Facade sealing near Ham

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

Facade sealing in Ham, done properly

A good facade joint depends on design as much as product. Joint width needs to match how far the joint moves and how far the sealant can stretch, and closed-cell rod sets the depth, keeping the bond to two faces, often at around 2:1 width to depth, as the manufacturer advises. Site teams most often ask us about discoloured or dirty facade joints and leaks at window and door perimeters, across cladding panel joints, shopfront frames and window and door perimeters. Whoever orders the work in Ham, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Every London site, Ham included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.

The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Ham (TW10, KT2, TW11)
Wider area
Greater London
Cover
A 12-month guarantee
Price
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026

Our process

Site rules come first: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact. Planning a London job such as one in Ham 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. Product choice follows the joint’s movement and substrate.
  3. Failed beads are removed in full.
  4. Primer goes on where the product data asks for it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. The finished joints are checked with you.

Before we start on site

  • Let us know about inductions and permits
  • Move anything stored against the joints
  • For older buildings, check the asbestos register before work

Request a quote

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, give us a call on 01277 525 020 or email drawings and photos.

Ask for a quote

Related advice

Facade sealing around Ham: points for this area

Ham has a good number of hotels close by, all within 2 miles. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Ham. Delivery slots and scarce storage shape how and when the mastic goes in.

On a healthcare site such as Cassel Hospital, which lies south of Ham, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. Recladding or extending a unit at a site like St. George's Industrial Estate, 0.5 miles south-east of Ham, brings panel joints and frame perimeters into the programme. On a campus such as St Mary's University, 1 mile to the west of Ham, new teaching buildings and residences are typically built and refurbished around the academic year.

Ham is about 1 mile south-east of Twickenham, in Greater London. Any commercial site in Ham is covered, whether it’s a single job or part of a planned programme. Ham is one of 764 places in Greater London on our list. We also cover London, some 10 miles away.

Postcode districts covered here: TW10, KT2 and TW11 for facade joints. Buildings on New Road, Lock Road and Cave Road are within our area. Access to Ham is via the A307, so getting applicators and materials to site is simple. Nearby places we also cover include Petersham (1 mile north), Eel Pie Island (1 mile north-west), Strawberry Hill (1 mile west), Teddington (1 mile south-west) and Richmond (1 mile north) for facade joints. Nearby towns on our patch include London (10 miles north-east), City of Westminster (9 miles north-east), Marylebone (9 miles north-east), Kensington (6 miles north-east), St Pancras (10 miles north-east) and Shoreditch (12 miles north-east).

Local landmarks in Ham

In Ham, that means premises near Grey Court School, The New Inn Public House and Sudbrook Park and the streets around them. For rail, the closest station is Teddington station, roughly 1.2 miles south-west of the centre. A little further out are Eel Pie Island Museum (1.1 miles north-west) and Bentall Centre (1.6 miles south). The countryside around Ham includes Kew Gardens Lake and Richmond Hill.

Map of Ham © OpenStreetMap contributors

What the job involves on each surface

Window and door perimeters

Aluminium, PVC-U and timber frames each have their own preparation needs. We clean and prime to the sealant maker’s guidance for each surface.

Coping and flashing joints

Not every coping or flashing leak is a sealant problem. Where the issue isn’t the sealant, we say so.

What we can’t put right

Not every problem is a sealant problem, and we’re upfront when that’s the case. It won’t fix:

  • Water getting in through cracked render or porous masonry
  • Specialist high-level access methods
  • Movement beyond what any sealant can handle

If you are not sure, just give us a call on 01277 525 020 or email the details over and we will give you a straight answer before you book.

What we seal

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

Questions about Ham

Is hospital work, at somewhere like Cassel Hospital, something you do?

Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is St. George's Industrial Estate, near Ham, within your area?

Yes. Our area takes in Ham and its surroundings, with estates and business parks such as St. George's Industrial Estate included. Send details of the unit and the work through our quote form for a quick quote.

When can the area be used after sealing?

We’ll confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.

Can weather delay the job?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.

How much does the work cost?

Every job gets its own fixed quote. For yours, call 01277 525 020 or email the details over.

What type of sealant goes on window perimeters?

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

Are your applicators CSCS-carded?

Yes. Should the site need card details in advance, let us know and we will send them with the quote.

Why it’s worth doing now in Ham

Each spell of rain drives water past a failed facade joint. Behind the frame, that can mean damp plaster, stained ceilings, corroded fixings and damaged insulation. Resealing now costs less than repairing interiors later. 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.

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Why appoint us

  • Coloured sealants to suit the setting, where available
  • Colours chosen to suit frames, cladding or finishes where possible
  • One contact handling all your sites
  • Fully insured

See our cost guide and our accreditations.

Site staff or a sealant specialist?

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

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Commercial clients in Ham

Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

For main contractors, we work as the sealant subcontractor. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Accreditations

Trusted. Accredited. Insured.