Mastic sealant contractors in North Wembley
Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in North Wembley and the surrounding area. Send photos or drawings for a fixed quote.
- Estate-wide sealant that is simply worn out
- Water getting in round frames after rain
- Complaints coming in block by block
Mastic sealing near North Wembley
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Your questions answered
Is East Lane Business Park, near North Wembley, within your area?
Yes. We cover North Wembley and the area around it, including industrial estates, business parks and retail parks such as East Lane Business Park. Photos and a short description are enough for a first look.
Do you work in occupied care homes around North Wembley?
Yes, with the manager deciding the order and timing of rooms. Any site rules, from signing in to infection control, are agreed before we start.
Which sealant will you use?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Is any job too small?
Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.
How many days will you need on site?
It depends on the scope, but the work typically takes one or more days per building, depending on the joint lengths and the access. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Do you work with property factors and landlords?
Yes, block and estate work is a core part of what we do. Buildings are scheduled in turn so you can plan around it.
What’s the quickest route to a quote?
There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.
How we handle mastic sealing in North Wembley
Mastic Doctor has sealed joints on commercial and residential blocks since 2005. Our applicators are CSCS-carded and we hold public liability insurance. Each building we complete carries a 12-month guarantee on our workmanship. We work on shopfronts below residential blocks, communal entrances and stairwells and external wall and movement joints, and what we’re called in for most is the same joint failures repeated across a portfolio and damaged joints in communal entrances and corridors. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in North Wembley it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
For managing agents in North Wembley, resident access, notice periods and the building’s rules shape the job. Work is planned with the agent so residents get notice and access is arranged in advance.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.
- Location
- North Wembley (HA0, HA9, UB6)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Places near North Wembley
Other services in North Wembley
Cost factors for mastic joints
Sealant work doesn’t have a standard rate, because every site is different. What we take into account:
- Whether the work must be split into stages
- Whether old sealant has to be cut out first
- Site requirements such as inductions and permits
- Quantities, in metres or numbers
The price depends on the quantity of joints, how much old material needs removing and how the joints are reached. Call for a quote when you are ready.
Before you send an enquiry
Whether it’s one area or a whole building, these details speed things up:
- The product your specification calls for
- Anything awkward about access or site hours
- Rough lengths or quantities, or drawings if you have them
- A wide shot and a close-up of the area
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Leave it or put it right?
Draughts round window perimeters cost occupiers comfort and the windows normally get the blame. In many cases, new perimeter sealant deals with it when the frames themselves are sound. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Dealing with it early is simpler for everyone.
Pricing mastic joints depends on quantities, condition and access, and any specification that applies. Call for a quote.
Why appoint us
- RAL and finish matching where the product range allows
- A range of standard colours, depending on the product
- A fixed quote before work starts
- One phone line for London, the South East and Scotland
See what affects the cost and our accreditations.
Different surfaces, different methods
Communal areas
Joints at low level in communal areas take knocks from bins, bikes and buggies and tend to fail first.
Window and door perimeters on blocks
On most blocks, the frame-to-wall joint is where failure shows first. We remove the failed mastic, prepare the faces, add backing rod if the joint is deep and reseal.
How a job runs
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. Planning a London job such as one in North Wembley starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
Before we start on site
- Flag any permit to work we’ll need
- Let building users know which areas are affected
- Have the specification and drawings to hand
Getting a fixed quote
A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or call the office on 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.
Read more
After the work
Regular inspection catches problems early. Specifically:
- Log resealing dates block by block
- Prioritise elevations facing the weather
- Make mastic part of routine maintenance checks
- Check the asbestos register before any old mastic is disturbed
Keep bins, bikes and deliveries away from low-level joints where you can. Knocks cause many early failures in communal areas.
One failed perimeter usually means others on the same building are close so a single failure is a sign to check the rest. A planned reseal saves repeated visits.
When it isn’t the sealant
Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is one of these:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Misted or failed double-glazed units
- Substrate edges that need repairing first
If in doubt, call 01277 525 020 or send details through our quote form and we will say what we think.
Joints and surfaces we work on
- External wall and movement joints
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Balcony and threshold joints
Mastic sealing around North Wembley: how the place shapes the job
In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. Our programme follows the access you agree with residents. The 2 miles around North Wembley include two care or nursing homes. Care home owners need frame and external mastic kept sound without unsettling residents.
If you look after a block within reach of Wembley Central station, under half a mile south-east of North Wembley, frame and balcony mastic can be renewed on one programme. For a school such as Park Lane Primary School, perimeter mastic on windows and doors is a holiday job. Older community buildings, Church of St John among them, often have frames of mixed ages whose mastic varies.
North Wembley is about 2 miles south-east of Harrow, in Greater London. We cover commercial sites throughout North Wembley. Across Greater London, 764 places are covered, including North Wembley. Our London page has more on work in that area.
Business premises anywhere in HA0, HA9 and UB6 are within our area for mastic joints. For a building on Elm Road, East Lane and High Road or nearby, send details and we will quote for mastic joints. North Wembley sits on or close to the A4089, useful when we plan access and materials. Sites close to North Wembley are covered too, including Brondesbury Park (1 mile north), Sudbury Hill (1 mile west), Sudbury (1 mile west), South Kenton (1 mile north) and Perivale (1 mile south-west). Further afield, our area takes in London (10 miles south-east), City of Westminster (7 miles south-east), Marylebone (7 miles east), Kensington (6 miles south-east), St Pancras (8 miles east) and Shoreditch (10 miles east).
Local landmarks in North Wembley
Locally, jobs take us to sites close to Wembley High Technology College, Preston Park and J.J. Moon's pub. North Wembley has its own railway station: Wembley Central station. Nearby you’ll also find Clementine Churchill Hospital (1.4 miles north-west) and London Designer Outlet (0.8 miles east). Not far away are Perivale Wood and Castlebar Hill.