Facade and window perimeter sealing in Mitcham, Greater London
Facade sealing for Mitcham, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Damp patches beside frames after rain
- Staining on stone next to old sealant
- New sealant peeling off old mastic
Facade sealing in Mitcham
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
About our facade sealing in Mitcham
We don’t install glazing systems or replace glass. What we seal are the joints around them: perimeter joints where frames meet the structure, panel joints and window perimeters. Site teams most often ask us about facade joints cracked through the middle and hard, chalky sealant that no longer flexes, on shopfront frames, perimeter joints where frames meet the structure and window and door perimeters. Most enquiries from Mitcham start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Every London site, Mitcham 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.
Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Location
- Mitcham (CR4, SW16, SM4)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Your questions answered
Can you work in a London building with booked loading and goods-lift slots?
Yes, most London buildings have access rules of some kind, and we plan around them. Say when the building is occupied and when it’s quiet, and we’ll plan accordingly. We allow for the ULEZ, which covers every borough
Will you plan work around the academic year at somewhere like Kingston University Roehampton Vale Campus?
Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Can you follow the specification on our project?
Yes. Send it with your enquiry, and we’ll price the work to it.
Can you just add new sealant on top?
No. Fresh silicone won’t grip cured silicone, so the existing bead is removed entirely and the joint cleaned back to sound material. That is what makes the new joint last.
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.
Are you fully insured?
Yes. Mastic Doctor is fully insured, public liability included.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day, and sign any area that should be left alone.
Towns and villages near Mitcham
What else we do in Mitcham
Quoting for work in Mitcham
Your fixed quote is built from the real scope. It takes account of:
- Site requirements such as inductions and permits
- Travel to remote or island sites
- Backing rod, priming and other preparation
- Phasing around occupants
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote and we will explain how it’s made up.
Before you send an enquiry
However big the job, the same details help:
- What the building is and how it’s used
- Whether an asbestos survey exists
- Where the site is, with the postcode
- Your programme or deadline
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, phone 01277 525 020 or email the details over.
Mastic packages on Mitcham sites
The ULEZ covers the whole of Greater London, Mitcham included, so site vehicles need to meet its standards or pay the daily charge. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. A 2-mile radius around Mitcham takes in a number of hotels. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included.
Projects at schools like St Thomas of Canterbury Catholic Primary School work to term dates, so mastic is programmed tightly. Projects at colleges like South Thames College Tooting Centre, 1.9 miles to the north of Mitcham, tend to run to term dates, so the mastic is planned tightly.
Mitcham is about 2 miles west of Thornton Heath, in Greater London. If you are looking for facade sealing in Mitcham, we can help, as we do across Greater London. 764 places across Greater London fall within our area, Mitcham among them. Our London page has more on work in that area, about 7 miles away.
Commercial sites across CR4, SW16 and SM4 are covered for facade joints. We cover commercial and managed buildings on Kings Road, Baker Lane and Manor Road and the roads nearby. Nearby places we also cover include Hackbridge (1 mile north), Eastfields (1 mile north), Colliers Wood (1 mile north-west), Merton Abbey (2 miles north-west) and Furzedown (2 miles north) for facade joints. A short drive away, we cover London (7 miles north), City of Westminster (8 miles north), Marylebone (8 miles north), Kensington (7 miles north), St Pancras (9 miles north) and Shoreditch (9 miles north).
What’s near Mitcham
In Mitcham, that means premises near The Archbishop Lanfranc School, St Mark's Church of England Academy and The White Lion of Mortimer pub, among other places. The closest station to Mitcham is Mitcham Eastfields station, about 0.5 miles north. Well-known places in the area include Wandle Industrial Museum (0.7 miles west) and Centrale Croydon (2.7 miles south-east). The countryside around Mitcham includes Duppas Hill and Cranmer Green.
Doing it in-house
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
Common problems we fix in Mitcham
Sun, rain and temperature swings wear facade sealant down over the years. The bead hardens, chalks on the surface and loses the flexibility to follow the joint, then it splits or peels.
It’s worth sending us details if you spot any of the following:
- Weathered joints at frame-to-structure perimeters
- Air leaks through failed facade joints
- Previous reseals run over old sealant
- Damp patches beside frames after rain
Hospital estates such as The Wilson Hospital, 0.5 miles to the south-west of Mitcham, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.
Questions to ask before you book
- Will failed sealant be removed rather than covered?
- Can the work be phased to keep areas open?
- What site paperwork they can supply
- Their approach to joint depth and backing
When it isn’t the sealant
Honesty saves time and money. Fresh joints won’t solve:
- Providing access systems for the work
- Cracked or spalling substrates that need repair before sealing
- Joints too narrow for the movement they take, which need redesign
If in doubt, speak to us on 01277 525 020 or email drawings and photos and we will say what we think.
What we seal
- Shopfront frames
- Stone and brick facade joints
- Perimeter joints where frames meet the structure
- Coping and flashing joints
- Window and door perimeters
- Cladding panel joints
Work for main contractors and building owners
CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Mitcham can sit alongside others in a wider programme.
Our process
We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- We start with photographs, drawings or a visit to see the joints and agree access.
- Product choice follows the joint’s movement and substrate.
- Failed beads are removed in full.
- Primer is applied where the maker specifies it.
- Backing rod is fitted and the new sealant gunned in and tooled.
- The finished joints are checked with you.
Getting the site ready
- Send any specification or drawings in advance
- Let building users know which areas are affected
- Clear stock, furniture or equipment away from the joints
Ask for a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.