Aldgate facade sealing
Commercial sealant work in Aldgate for contractors, FMs and building owners: facade joint and window perimeter sealing on commercial buildings, quoted at a fixed price.
- Cold air coming in at window perimeters
- Damp patches beside frames after rain
- Failed sealant on precast panel joints
Need facade sealing in Aldgate?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Facade sealing in Aldgate
Weather decides a lot in facade sealing. Joints have to be dry and the air and surface temperature within the product’s range, and cold, damp starts can delay work. We build that into the programme and tell you if the forecast changes the plan. If you’re dealing with leaks at window and door perimeters and weathered facade joints that have lost their grip, we can put it right, on window and door perimeters, perimeter joints where frames meet the structure and cladding panel joints alike. Searching for sealant specialists in Aldgate? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
Building sites in London tend to be tight: limited storage, booked deliveries and access shared with other trades. Mastic is normally one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
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.
- Location
- Aldgate (E1, EC2A, SE1)
- Wider area
- City of London
- Guarantee
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Your questions answered
Would you work within a site like London Bridge Hospital?
Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.
Do you cover business parks and estates near Aldgate, such as Princes Court Business Centre?
Yes. We cover Aldgate and the area around it, including industrial estates, business parks and retail parks such as Princes Court Business Centre. To start, just call the office on 01277 525 020 or email us with the unit, the joints involved and your access times.
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.
Do you have public liability insurance?
Yes. We’re fully insured, and the certificate can go with your quote.
What do you charge?
We don’t publish prices, because every site is different. Send photos or drawings and we’ll price it at a fixed figure.
Will rain stop the work?
Rain and frost can pause external sealing. We plan for weather and keep you updated.
Do we need an asbestos check before resealing?
It’s worth checking in any building from before 2000. The duty to manage asbestos sits with the dutyholder, so ask for it before we start. Suspect material is left alone until it has been tested.
Towns and villages near Aldgate
Other services in Aldgate
What happens if it’s left?
Failed joints let in more than water: occupants notice draughts and cold spots around windows. Resealing deals with the draught as well as the leak. Getting scaffold, permits or access booked in Aldgate takes effort, so it makes sense to deal with every failing joint while access is in place.
What a job costs comes down to how many linear metres there are, how much old material needs removing and the access. Call for a quote once you have the details.
Why choose Mastic Doctor in Aldgate
- A range of standard colours, depending on the product
- Old sealant cut out, never sealed over
- Work to your specification and the manufacturer’s guidance
- CHAS accredited
Read our cost guide or how we’re accredited.
Honest limits
Part of a good diagnosis is knowing where sealant stops. You will hear from us if the cause turns out to be one of these:
- Leaks from roofs, gutters or failed flashings rather than sealant joints
- Damaged frames that need replacing
- Joints too narrow for the movement they take, which need redesign
Not sure which it is? You can ring 01277 525 020 or email drawings and photos and we’ll tell you honestly.
Where we work in Aldgate
- Window and door perimeters
- Stone and brick facade joints
- Coping and flashing joints
- Cladding panel joints
- Shopfront frames
- Perimeter joints where frames meet the structure
What affects the price in Aldgate
Your fixed quote is built from the real scope. It allows for:
- How much existing material needs removing
- How much there is to seal
- Which sealant the job calls for
- Working within restricted access windows
Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.
What to include in your enquiry
Whether it’s one area or a whole building, these details speed things up:
- Any dates the work must fit around
- Clear photos of the problem areas
- Whether an asbestos survey exists
- Rough lengths or quantities, or drawings if you have them
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, give us a call on 01277 525 020 or use the quote form.
Aftercare for building managers
For the best life from the joints:
- Avoid patch repairs on failed facade joints
- Inspect facade joints on a regular cycle
- Check that rainwater leaves the facade the way it was designed to
- Brief window cleaners about newly sealed joints
Let the new sealant cure before washing the facade or windows near it. Pressure washers and harsh cleaners can damage a fresh bead and tell your cleaning contractor.
Coordinate facade sealing with other external works. Sharing the access keeps the cost down and limits disruption.
Our process
We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact. In Aldgate, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- We look at the joints, the drawings and the access before pricing.
- Failed sealant is cut out along its full length.
- Both faces are cleaned and, where the product needs it, primed.
- Backing rod, or bond-breaker tape in shallow joints, limits the depth.
- A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
- The completed runs are checked with you, then the 12-month guarantee applies.
What we need from you
- Let building users know which areas are affected
- Confirm the product named in the specification
- Explain the parking and delivery arrangements
Request a quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to ring 01277 525 020 or email us with what you know.
Advice
Building and refurbishing in Aldgate
There are plenty of hotels within about 2 miles of Aldgate. When hotels extend or refit, the work is usually squeezed between peak periods, mastic included. Site traffic in Aldgate falls within London’s ULEZ, like everywhere else in Greater London. Delivery slots and scarce storage shape how and when the mastic goes in.
Projects at colleges like London College of Marketing and Technology, under half a mile north-east of Aldgate, tend to run to term dates, so the mastic is planned tightly. For a contractor at a hotel such as Hotel Indigo London - Tower Hill, which lies east of Aldgate, the mastic often has to be finished before a reopening date.
Aldgate is about 1 mile north-east of London, in City of London. We cover Aldgate and the rest of City of London, with the same fixed quotes and 12-month guarantee as everywhere else. Aldgate is one of 7 places we cover in City of London.
If you need facade sealing in E1, EC2A and SE1, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. For a building on Bush Lane, Swan Lane and Mark Lane or nearby, send details and we will quote for facade joints. With the A3 and A10 nearby, Aldgate is easy to get to with materials and equipment. We also cover Spitalfields (1 mile north-east), Bishopsgate (1 mile north-west), Tower Hill (1 mile south), Whitechapel (1 mile north-east) and City of London (1 mile west) for facade joints.
Landmarks near Aldgate
Recent enquiries here include premises near Bishopsgate Institute Special Collections and Archives, Fund Academy and Finsbury Circus and the streets around them. Other local landmarks include London Enterprise Academy (0.6 miles east), East India Arms (less than half a mile south-west) and St Mary-at-Hill (less than half a mile south-west). Aldgate has its own railway station: London Fenchurch Street station. A little further out are The City Wall at Vine Street (under half a mile south-east) and Gabriel's Wharf (1.4 miles west). Open spaces near Aldgate include Tower Hill and St. James's Park Lake.
What we’re called out for in Aldgate
Not every failure is in the sealant: crumbling render, spalling concrete or flaking paint take the sealant with them. When the joint edges need repair first, we say so.
Clients usually get in touch after noticing something like this:
- New sealant peeling off old mastic
- Weathered joints at frame-to-structure perimeters
- Facade joints cracked through the middle
- Water coming in around window frames
Units on estates such as Princes Court Business Centre, 0.9 miles to the east of Aldgate, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.
Before you book anyone
- The terms of the workmanship guarantee
- Whether their applicators hold CSCS cards
- How the existing material will be dealt with
- How they handle RAMS and site documents