Construction and new-build mastic in Westbourne, Greater London
Mastic packages for new-build and refurbishment projects in Westbourne and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.
- Frame gaps too wide for sealant alone
- Early adhesion failures on new external joints
- Sealant knocked or painted over by other trades
Construction mastic in Westbourne
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Construction mastic in Westbourne, done properly
A typical mastic package covers more than window perimeters: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. One contractor for all of it keeps the responsibility in one place. Site teams most often ask us about sanitary sealant damaged by following trades and failed sealant in an existing building being refurbished, on floor and skirting junctions, cladding and panel joints and window and door perimeters. Searching for sealant specialists in Westbourne? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.
Around Westbourne, as across London, much of the work is refurbishing existing buildings as well as building new ones. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by, so tidy, well-planned work matters.
We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.
- Location
- Westbourne (W2, W11, W9)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Questions about Westbourne
Do you take on jobs in Westbourne where loading and access are tightly controlled?
Yes, most London buildings have access rules of some kind, and we plan around them. Send the building rules and access times with your enquiry. We allow for the ULEZ, which covers every borough
Can you work at a site such as Stable Way Industrial Estate, by Westbourne?
Yes. Our area takes in Westbourne and its surroundings, with estates and business parks such as Stable Way Industrial Estate included. To start, just ring 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.
Do you seal on top of existing sealant?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
Do your applicators hold CSCS cards?
Our applicators hold CSCS cards, and we’re CHAS accredited and a Constructionline member. We’re also fully insured, with five million pounds of public liability cover.
What does a mastic package normally include?
External perimeters and movement joints, internal caulking where specified, sanitary and kitchen joints, plus snagging in one fixed quote.
What hours do you work?
Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.
Do you do fire-rated sealing on new builds?
Where it’s specified, yes. If the detail calls for collars, wraps or batts instead, we’ll tell you.
Why deal with it now?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. If the frame is in good order, cutting out and resealing the perimeter can be all it needs and that’s a far smaller job. We’ll say so if a frame itself is the problem. In Westbourne, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.
The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site requirements come into it too.
Why appoint us
- Commercial sealant work since 2005
- Public liability insurance in place
- One number for every site we cover
- Joints cleaned back to sound surfaces
Read how commercial sealant jobs are priced or how we’re accredited.
For managing agents and facilities managers
For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first.
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.
Diagnose, treat, sign off
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself typically takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes, and our waste is bagged and taken away as we go. All of Greater London is in the ULEZ, and kerbside space in Westbourne can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- Drawings, specification and programme come to us.
- Quantities are measured and a fixed price returned.
- The sequence is agreed with the site manager.
- Plots or floors are sealed as they’re handed over.
- Joints are prepared, backed and sealed to the specification.
- Snags are cleared and the package signed off with our 12-month guarantee.
Preparing the site
- Arrange parking or a loading space
- Point out any areas we must not close
- Let building users know which areas are affected
Get a fixed quote
To get a fixed quote, speak to us on 01277 525 020 or email drawings and photos, telling us the site location and the nature of the job. You can also send details through our quote form.
Read more
How the quote is worked out
Each job is priced on its own details. The things that drive the figure:
- Quantities, in metres or numbers
- Working within restricted access windows
- Joint width, depth and condition
- Removal of failed or old sealant
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote and we’ll price your job on its own details.
What to include in your enquiry
A few photographs plus some basic facts will normally do. It helps to include:
- Approximate linear metres or a joint schedule
- Asbestos survey details if the building is older
- Where the site is, with the postcode
- Anything awkward about access or site hours
The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or email drawings and photos if you’d rather talk the job through.
Places near Westbourne
What else we do in Westbourne
After the work
A few simple habits keep the new joints working:
- Don’t schedule sealing before decorators and flooring are done
- Ask cleaners to use soft cloths around fresh sealant
- Brief following trades on areas that have been sealed
- Use the product the specification names
A new structure shifts as it loses construction moisture. Flexible sealants in the right joints handle normal movement. We can advise if a joint needs a different product.
Sanitary joints that fail early become defects soon after occupation. Leaks behind showers and basins damage finishes and floors. Proper preparation, with the right silicone first time, keeps it off the defects list.
Different surfaces, different methods
Bathrooms, en suites and washrooms
Across a block of flats or a hotel, sanitary sealing is repeated in every room. One applicator team gives the same finish everywhere, plot by plot or floor by floor.
Fire-rated sealant where specified
Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. Fire stopping design belongs to the designer and building control; we work to the specification and the manufacturer’s installation guidance.
Facades, frames and programmes in Westbourne
The ULEZ covers the whole of Greater London, Westbourne included, so site vehicles need to meet its standards or pay the daily charge. Deliveries are booked and storage is tight, so mastic materials come in as needed. A 2-mile radius around Westbourne takes in a good number of hotels. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.
For contractors on a campus like Brigham Young University London Centre, which lies south-east of Westbourne, facade and perimeter sealing has to fit around students and term dates. Hotels like New Linden Hotel, under half a mile to the south-east of Westbourne, rarely close for long, so refurbishment mastic is phased floor by floor. Hospital estates such as St Mary's Hospital, 1 mile to the east of Westbourne, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.
Westbourne is about 1 mile north of Kensington, in Greater London. Anywhere in W2, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Our Greater London coverage takes in 764 places, large and small.
Anyone looking for construction mastic in W2, W11 and W9 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. If your site is on Salem Road, Acklam Road and Morgan Road or close by, send details and we’ll quote for mastic packages. With the A404 and A4206 nearby, Westbourne is easy to get to with materials and equipment. Just outside Westbourne, we also work in Westbourne Green (1 mile north-east), Bayswater (1 mile south), Little Venice (1 mile north-east), Maida Vale (1 mile north) and Paddington Green (1 mile east). Further afield, our area takes in London (5 miles east), St Pancras (3 miles east), Shoreditch (5 miles east), Walthamstow (9 miles north-east), Hoxton (5 miles east) and Whitechapel (5 miles east).
Around Westbourne
Around Westbourne, our work takes us to commercial buildings near Maida Vale School, Abdus Salam Library and Westminster Academy and the streets around them. Also close by are Emslie Horniman's Pleasance (0.8 miles north-west) and Cock and Bottle pub (under half a mile south-west). For rail, the closest station is London Paddington station, roughly 0.8 miles east. Well-known places in the area include Paddington General Hospital (0.5 miles north) and Greek Orthodox Cathedral Treasury Museum (under half a mile south-east). For a walk, there’s Campden Hill and Greville Place nature reserve.