Kenton mastic sealing
Sealant work in Kenton for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.
- The same joint failures repeated across a portfolio
- No planned programme for sealant
- A mix of products and colours from past repairs
Mastic sealing for Kenton sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Cost factors for mastic joints
A fixed quote reflects the actual work. It allows for:
- Removal of failed or old sealant
- Joint width, depth and condition
- Whether the work must be split into stages
- Induction, permit and paperwork requirements
The specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.
What we need to price the job
There’s no need for a formal survey. These details are enough to start:
- The product your specification calls for
- Whether an asbestos survey exists
- The postcode of the building
- A wide shot and a close-up of the area
Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. The easiest way is to phone 01277 525 020 or send photos by email.
Mastic sealing in Kenton, done properly
Owners and agents usually inherit a building’s mastic rather than choose it and it slowly wears out: it sits round windows and doors, along external joints and through communal areas. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. We work on shopfronts below residential blocks, communal entrances and stairwells and external wall and movement joints, and the usual reasons a site gets in touch are complaints coming in block by block and window mastic that has split and shrunk. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Kenton, preparation and product choice get the time they need.
Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. Work is planned with the agent so residents get notice and access is arranged in advance.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Location
- Kenton (HA3, HA7, HA1)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Your questions answered
Will you take on work at estates like East Lane Business Park, close to Kenton?
Yes. Our area takes in Kenton and its surroundings, with estates and business parks such as East Lane Business Park included. A few photographs and the unit address let us price the work.
Do you work in occupied care homes around Kenton?
Yes. We work around residents’ routines, a room or two at a time. Noise and disruption are kept to a minimum.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
Do you cover Kenton?
Yes. We cover Kenton and the rest of Greater London, within our coverage of Greater London, South East England and Scotland. For a quote, phone 01277 525 020 or send details through our quote form.
Can you follow the specification on our project?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.
How many days will you need on site?
The duration is planned around your programme and the access we are given. We will give you an estimate of time on site when we quote.
What’s the quickest route to a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photos and a postcode.
Also near Kenton
What else we do in Kenton
Diagnose, treat, sign off
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a few days for most blocks, with larger programmes scheduled building by building, and we clear our waste as we work. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.
- We inspect the joints, building by building, and record what has failed and why.
- You get a fixed quote, priced per building where that helps your budgeting.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- We remove the old mastic completely and clean the joint faces back.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
Before we start on site
- Let us know about inductions and permits
- Confirm the product named in the specification
- Send your site hours and access windows
Quotes
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.
Related advice
Different surfaces, different methods
Estate-wide resealing programmes
A programme can start with the worst buildings and work down. Quotes can be per block or for the full programme.
Communal areas
Low-level communal joints get damaged more than most and tend to fail first.
Signs you need mastic sealing in Kenton
Communal entrances and corridors see a lot of wear, with joints near the floor and around doors suffering most. Regular cleaning wears them further.
Common reasons buildings call us in:
- Draught complaints from residents or tenants
- Patchy repairs in mismatched sealant
- Complaints coming in block by block
- Movement joints with sealant missing
Student accommodation around universities such as Westminster University, 0.9 miles south-west of Kenton, is usually managed block by block, which suits a planned mastic programme.
Before you book anyone
- Their public liability cover
- How joint depth will be controlled
- The terms of the workmanship guarantee
- Will RAMS and insurance details be available?
When it isn’t the sealant
Before quoting, we check that sealant is the right answer. It won’t put right:
- Masonry that has broken away beside the joint
- Leaks through the frame itself rather than the perimeter
- Misted or failed double-glazed units
If in doubt, speak to us on 01277 525 020 or email drawings and photos and we’ll say what we think before you book.
Where we work in Kenton
- Communal entrances and stairwells
- Shopfronts below residential blocks
- External wall and movement joints
- Communal kitchens and washrooms
- Balcony and threshold joints
- Window and door perimeters on blocks
After the work
Keep the joints in good shape with a few simple steps:
- Group repairs into a planned programme
- List the paperwork your organisation requires when you send details
- Protect low-level joints in entrances
- Ask residents or tenants to report leaks and draughts early
Our workmanship is covered for 12 months, so report any failure in that time. Beyond that, routine checks spot the next round of repairs.
Leaks at window perimeters spoil finishes and can affect frames. Early resealing is far simpler than repairs inside.
Frames, entrances and external joints in Kenton
There are two care or nursing homes within about 2 miles of Kenton. Owners of care premises can bring window and door mastic into a phased programme planned around the home. For a London block, the agent or landlord typically handles notices to residents and access to flats. We fit the programme to your notice periods.
Churches, halls and community buildings such as Church of St Mary are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. If your remit includes a building such as St Gregory's Catholic Science College, frame and door mastic can be programmed for the holidays.
Kenton is about 2 miles south of Stanmore, in Greater London. If you are looking for mastic sealing in Kenton, we can help. We work across 764 places in Greater London, large and small. Sites around London have their own page, about 11 miles away.
Anyone looking for mastic sealing in HA3, HA7 and HA1 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on Retreat Close, Kenton Road and Woodgrange Avenue. With the A4006 nearby, Kenton is easy to get to with materials and equipment. If your building is just outside Kenton, we cover South Kenton (1 mile south), Northwick Park (1 mile south-west), Greenhill (1 mile west), Wealdstone (1 mile north-west) and Harrow on the Hill (2 miles south-west). Nearby towns on our patch include London (11 miles south-east), City of Westminster (8 miles south-east), Marylebone (8 miles south-east), Kensington (7 miles south-east), St Pancras (9 miles south-east) and Shoreditch (11 miles south-east).
Near you in Kenton
Around Kenton, our work takes us to commercial buildings near Uxendon Manor Primary School, The New Moon pub and Preston Park. For rail, the closest station is Kenton station, about 0.5 miles south-west. Well-known places in the area include St. Anns (1.3 miles west) and Hilfield Castle (4.9 miles north). For a walk, there’s Masons Field and Northala Fields.