South East England and London
Mastic Sealing in City of London
For any site across City of London, we cover mastic sealing in all 7 towns and villages, with a fixed quote and a 12-month guarantee.
Mastic Sealing across City of London
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Towns we cover in City of London
Mastic sealing for building owners, managing agents and housing associations. Pick your town below to see the details for your area, and send details for a fixed quote.
Largest places
More services in City of London
- Construction and new-build mastic
- Commercial washroom and wet-area sealing
- Fire-rated sealing and fire stopping
- Expansion and movement joint sealing
- Coloured and colour-matched sealant
- Commercial sealant contractors
- Facade and window perimeter sealing
- Industrial and floor joint sealing
Postcodes in City of London
Our mastic sealing service in City of London
For blocks and buildings across City of London, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Addresses, photos of typical joints and a rough idea of quantities let us give a quick quote, and site visits can be arranged. Site teams most often ask us about damp patches beside frames and complaints coming in block by block, across communal entrances and stairwells, balcony and threshold joints and external wall and movement joints.
Occupied buildings need a little choreography. We sign and contain the area we are in, with routes through the building left open and move on in phases so staff and visitors can carry on around us.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
How we quote
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
What you get with us
- RAL and finish matching where the product range allows
- Standard and matched colours in many product ranges
- Work carried out by CSCS-carded applicators
- Colours confirmed for the specified product
Request a quote
Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.
Landmarks near City of London
In City of London, that means premises near Fashion Retail Academy, Prior Weston Primary School and Children's Centre and Barts Health Archives. Other local landmarks include Golden Fleece pub (under half a mile south), St Alphage Garden (less than half a mile north), Central Foundation Boys' School (0.8 miles north) and St Mary-at-Hill (0.5 miles south-east). There’s a railway station in City of London itself: London Cannon Street station. Well-known places in the area include Gabriel's Wharf (0.8 miles south-west) and London Mithraeum (less than half a mile south). Green spaces nearby include St. James's Park Lake and Barnsbury Wood.
- Churches close by include St Olave Old Jewry (under half a mile east)
Blocks and managed buildings across City of London
City of London has managed buildings of every age, from older blocks to new developments. Mastic of different ages and quality often sits side by side, so we look at the whole elevation before quoting.
Around the motorway corridors of the South East, business parks and industrial estates are common, and we cover City of London along with the rest of the region.
City of London: Churches, halls and community buildings such as St Olave Old Jewry are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. Blocks of flats and mixed-use buildings often cluster around stations such as London Cannon Street station (under half a mile south of City of London) and their window and balcony mastic tends to age at the same rate across a building.
After the work
To get the most from the new sealant:
- Avoid piecemeal callouts where you can
- Keep a record of when each building was resealed
- Reduce knocks to communal area joints
- Check the asbestos register before any old mastic is disturbed
Ask residents or tenants to report draughts or leaks round windows early. A quick report keeps a small repair small.
Water getting in round frames can damage plaster, decoration and the frames themselves. Early resealing is far simpler than repairs inside.
What sealant work can’t fix
A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is any of the following:
- Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
- Roof leaks, gutters or failed flashings that aren’t sealant joints
- Misted or failed double-glazed units
Owners, agents and contractors
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. City of London can form part of a wider programme.
How the quote is worked out
The price varies from site to site. It mainly depends on:
- Access and working height
- How much there is to seal
- Joint width, depth and condition
- Site requirements such as inductions and permits
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.
Before you send an enquiry
Diagnosis starts before we arrive. Tell us:
- Any dates the work must fit around
- Whether the building will be occupied during the work
- Specification clauses that apply
- The postcode of the building
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.
Why act early?
Adding sealant to cyclical maintenance is an easy win. Waiting until leaks appear means working under pressure and less choice about when.
Questions to ask before you book
- How the existing material will be dealt with
- The named product and why it was chosen
- Can the work be phased to keep areas open?
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
Common questions from City of London clients
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day.
Can you seal joints high up on a block?
Every block is different. How upper joints are reached is agreed before work is booked so there are no surprises.
Can weather delay the job?
Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Do you supply RAMS and insurance details?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We hold CHAS accreditation and Constructionline membership.
How long will the new sealant last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
How do you choose the sealant?
Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.