Mastic Sealing in St Giles
Mastic sealing in St Giles, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Estate-wide sealant that is simply worn out
- A mix of products and colours from past repairs
- Damp patches beside frames
Mastic sealing in St Giles
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Why deal with it now?
Reacting to every complaint means sending someone out block by block. Planned resealing covers a whole building or estate in one go and is simpler to manage and budget. Failed sealant in a building in St Giles can quickly affect neighbours, tenants or the floor below: water travels through shared structures, and a small leak becomes a dispute between occupiers. Dealing with it early is simpler for everyone.
The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.
Why choose Mastic Doctor in St Giles
- A range of standard colours, depending on the product
- Products installed to the manufacturer’s instructions
- 12 months’ guarantee on every job
- Failed material removed, not covered up
Take a look at our cost guide and our accreditations and insurance.
Mastic sealing for commercial buildings in St Giles
Blocks are lived in, so access and disruption have to be thought through. Dates, areas and the order of work are agreed with you in advance, giving you what you need to notify residents. Communal entrances and stairs stay usable while we work. The enquiries we see most involve water getting in round frames after rain and old repairs sealed over failed mastic, on external wall and movement joints, window and door perimeters on blocks and communal entrances and stairwells. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in St Giles it comes down to the same thing: the right product in a properly prepared joint.
For managing agents in St Giles, resident access, notice periods and the building’s rules shape the job. We work to the agent’s notice and access plan, so residents know what’s happening.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Location
- St Giles (W1F, W1D, W1T)
- Region
- Greater London
- Cover
- 12 months on every job
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Mastic sealing in St Giles: the local picture
London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. We fit the programme to your notice periods.
Landlords with units on estates such as Grand Vitesse Industrial Estate (1.3 miles south-east of St Giles) can bring frame, door and external mastic across several units into one programme. If you look after a block within reach of Tottenham Court Road station, under half a mile west of St Giles, frame and balcony mastic can be renewed on one programme. If you are responsible for a building such as Soho Baptist Chapel, frame and door mastic needs the same attention as any other property.
St Giles is about 1 mile east of City of Westminster, in Greater London. Commercial clients in St Giles use us for work on mastic joints. Our Greater London coverage takes in 764 places.
Work on mastic joints is covered throughout W1F, W1D and W1T, for business premises of every kind. Streets here include Duck Lane, Drury Lane and Bridle Lane. Main routes into St Giles include the A301 and A400. We also cover Seven Dials (1 mile south), West End (1 mile south-west), Soho (1 mile south-west), Covent Garden (1 mile south-east) and Chinatown (1 mile south-west). Nearby towns on our patch include Kensington (3 miles west), Walthamstow (7 miles north-east), Hampstead (4 miles north-west), Ruislip (13 miles west), Stockwell (3 miles south) and Orpington (13 miles south-east).
Near you in St Giles
In St Giles, that means premises near LSE Shaw Library, The Crown pub and Mercers' School. Nearby too are London Nautical School (1 mile south-east) and St Anne's Churchyard (less than half a mile south-west). St Giles has its own railway station: Tottenham Court Road station. Well-known places in the area include Montfichet's Tower (1.1 miles east) and Kingly Court (0.5 miles west). The countryside around St Giles includes Barnsbury Wood and Ludgate Hill.
Cost factors for mastic joints
Your fixed quote is built from the real scope. It allows for:
- How much there is to seal
- Travel to remote or island sites
- Induction, permit and paperwork requirements
- Whether the work must be split into stages
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote and we’ll explain how it’s made up.
What to include in your enquiry
A few photos plus some basic facts will normally do. Please tell us:
- Approximate linear metres or a joint schedule
- The product your specification calls for
- Photos of the joints, close up and from further back
- When you need the work done
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. For a chat about it beforehand, call the office on 01277 525 020 or send photos by email.
What sealant work can’t fix
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Failed window or door frames, which need a window contractor
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
- Glazing that needs replacing
Not sure which it is? You can give us a call on 01277 525 020 or email us and we’ll tell you honestly.
What we seal
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
- Balcony and threshold joints
- Window and door perimeters on blocks
- Shopfronts below residential blocks
St Giles: questions and answers
Can you quote for a block close to Tottenham Court Road station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
Do you work in London buildings with loading restrictions?
Yes. Inductions, permits and timed loading are routine for us in London. Say when the building is occupied and when it’s quiet, and we will plan accordingly.
Do you work with property factors and landlords?
Yes. Managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios are our main clients for this work, and we quote building by building or as a programme.
What paperwork can you provide?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We hold CHAS accreditation and Constructionline membership.
Do you guarantee the mastic work?
A 12-month guarantee covers our work. It covers our workmanship, not later building movement, damage or frame failures.
Do you work in St Giles?
Yes. We cover St Giles. To discuss a job, ring 01277 525 020 or email a schedule or drawings.
Does the weather affect the work?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
How the job changes by surface
Window and door perimeters on blocks
Perimeter joints on blocks are best done elevation by elevation or block by block. Access is agreed with you before the quote is fixed.
Tenement and older buildings
Older mastic can contain asbestos and the register is checked before anything is disturbed. If it’s suspected, work stops until it’s tested.
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How a job runs
At the end of each section, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. Planning a London job such as one in St Giles starts with access. Give us the hours we can be on site and we’ll schedule to suit.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
Before we start on site
- Agree which areas must stay open
- Clear stock, furniture or equipment away from the joints
- Send asbestos survey details if the building is pre-2000
Ask for a quote
For a fixed quote, call the office on 01277 525 020 or email a schedule or drawings, telling us the site location and the nature of the job. You can also send details through our quote form.
Read more
Should maintenance staff do it?
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.
Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.