Construction and new-build mastic in Brentham Garden Suburb, Greater London
Mastic packages for new-build and refurbishment projects throughout Brentham Garden Suburb and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Internal caulk splitting as the building dries out
- Frame gaps too wide for sealant alone
- A long mastic snag list close to completion
Construction mastic for businesses in Brentham Garden Suburb
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How the job changes by surface
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. Depth is controlled with backing rod so the bead bonds to two sides only.
Fire-rated sealant where specified
Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the manufacturer’s tested detail. The design and sign-off of fire stopping sit with the designer, principal designer or fire engineer and we install what’s specified.
Construction mastic in Brentham Garden Suburb
On refurbishments, the mastic package normally includes cutting out old sealant as well as sealing new work. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone. New and existing joints then get the same preparation. If you have oversized or tapered gaps around new frames and failed sealant in an existing building being refurbished, we can help, whatever the surface. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Brentham Garden Suburb is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Construction in a London area such as Brentham Garden Suburb means working on constrained sites: small compounds, delivery slots and shared hoists and scaffold. Mastic is typically one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
We stand by our work with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.
- Where
- Brentham Garden Suburb (W5, W13, UB6)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Common problems we fix in Brentham Garden Suburb
A joint without backing rod or bond-breaker often fails early. Fixed to three faces, the sealant rips the first time the joint opens so we set the depth properly before sealing.
Most enquiries start with one or more of the following:
- Internal caulk splitting as the building dries out
- New external sealant already peeling away
- A mastic package split between trades with no clear owner
- Failed sealant in an existing building being refurbished
For a contractor at a hotel such as The Drayton Court Hotel (1 mile south-west of Brentham Garden Suburb), the mastic often has to be finished before a reopening date.
What to look for in a quote
- Their pre-qualification and accreditations
- Whether primer will be used where the manufacturer specifies it
- How the existing material will be dealt with
- How they handle RAMS and site documents
Our process
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 the sealant is tooled off neatly. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- Drawings, specification and programme come to us.
- We take off quantities and return a fixed quote.
- We agree with the site team which areas come first.
- Plots or floors are sealed as they’re handed over.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Getting the site ready
- Share your working hours and any access restrictions
- Agree which areas must stay open
- For older buildings, check the asbestos register before work
Get a fixed quote
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Read more
Cost factors for mastic packages
We price every job individually. The things that drive the figure:
- Site requirements such as inductions and permits
- Location, for remote and island sites
- The product specified
- Access and working height
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.
What to include in your enquiry
Diagnosis starts before we arrive. Let us know:
- Anything awkward about access or site hours
- Specification clauses that apply
- What the building is and how it’s used
- Rough lengths or quantities, or drawings if you have them
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to call 01277 525 020 or email drawings and photos.
Why it’s worth doing now in Brentham Garden Suburb
On a refurbishment, there’s a choice between resealing existing frames and replacing them. Sound frames often need only a new perimeter seal, which is a much smaller cost. If the frame is life-expired, we will tell you. Failed sealant in a building in Brentham Garden Suburb can quickly affect neighbours, tenants or the floor below: water travels through shared structures, and a small leak becomes a dispute between occupiers. Putting it right early is less disruptive than dealing with the consequences.
Pricing mastic packages depends on how many there are, their condition and the access, plus any specification you’re working to. Ask us for a fixed quote.
Why clients in Brentham Garden Suburb choose us
- Public liability insurance in place
- Over 20 years of commercial sealing
- RAL and finish matching where the product range allows
- Constructionline member for supplier checks
Read how commercial sealant jobs are priced or how we’re accredited.
Nearby places to Brentham Garden Suburb
Other services in Brentham Garden Suburb
Construction mastic around Brentham Garden Suburb: what changes locally
As part of Greater London, Brentham Garden Suburb is inside the ULEZ, which applies to every van on site. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. A 2-mile radius around Brentham Garden Suburb takes in plenty of hotels. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included.
Further education sites such as Alexander Cromwell College, 1 mile to the north of Brentham Garden Suburb, are extended and refurbished from time to time, with mastic often programmed into the summer break. For contractors refurbishing units at places like Manhattan Business Park, 0.5 miles north-east of Brentham Garden Suburb, the mastic covers cladding panels, roller-door and window perimeters.
Brentham Garden Suburb is about 1 mile north of Ealing, in Greater London. Commercial clients in Brentham Garden Suburb use us for work on mastic packages, as part of our coverage of Greater London. Across Greater London, 764 places are covered, including Brentham Garden Suburb. London is covered too, around 9 miles from Brentham Garden Suburb.
Business premises anywhere in W5, W13 and UB6 are within our area for mastic packages. Among the streets we cover are Kings Road, Selby Road and Marsh Road. We also cover Pitshanger (1 mile west), Perivale (1 mile north-west), Ealing (1 mile south), Hanwell (2 miles south-west) and South Ealing (2 miles south) for mastic packages. A short drive away, we cover London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (5 miles east), St Pancras (8 miles east) and Shoreditch (10 miles east).
Landmarks near Brentham Garden Suburb
We work on buildings around Ealing Independent College, Library for Iranian Studies and St Benedict's School, among other places. Also close by are Castle Bar Park (1 mile west) and Brentham Clubhouse pub (less than half a mile north-west). The closest station to Brentham Garden Suburb is Ealing Broadway station, roughly 0.9 miles south of the centre. Nearby you will also find London Transport Museum Depot (1.9 miles south-east) and Central Middlesex Hospital (1.7 miles east). Open spaces near Brentham Garden Suburb include Castlebar Hill and Middle Lake.
When to bring in a specialist
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.
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
Brentham Garden Suburb: questions and answers
Can you work in a London building with booked loading and goods-lift slots?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Say when the building is occupied and when it’s quiet, and we will plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it
Can you work on a hospital site such as Cygnet Hospital Ealing?
Yes. We work in healthcare settings as well as offices and schools. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
What site paperwork can you supply?
Requirements differ from site to site, so tell us what you need and we’ll confirm it when we quote.
How many days will you need on site?
The duration is planned around your programme and the access we’re given. You’ll have an expected duration with the quote.
Is it fine to apply new sealant on top of old?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
Do you take on small jobs?
Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.
How long do sealant joints last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.