Facade Sealing contractors in Brentford
Looking for facade sealing in Brentford? It’s simple: send details, get a quote, we seal, guaranteed.
- Sealant pulling away from frames or panels
- Weathered facade joints that have lost their grip
- Leaks at window and door perimeters
Need facade sealing in Brentford?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
What we can’t put right
We check first that sealant really is the fix. It won’t put right:
- Render or concrete edges that have broken away
- Providing access systems for the work
- Leaks from roofs, gutters or failed flashings rather than sealant joints
If you are not sure, just ring 01277 525 020 or email us and we will give you a straight answer before you book.
Surfaces we seal
- Coping and flashing joints
- Window and door perimeters
- Perimeter joints where frames meet the structure
- Stone and brick facade joints
- Shopfront frames
- Cladding panel joints
How we handle facade sealing in Brentford
Facade joints are the line of defence between the weather and the building fabric. Once a perimeter seal fails, water tracks in around frames and panels. We cut out failed facade joints and reseal them with a facade-grade sealant suited to the movement. Most enquiries involve unsightly perimeter sealant on a visible elevation and old perimeter mastic that has dried out, across shopfront frames, window and door perimeters and cladding panel joints. Most enquiries from Brentford start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
Building sites in London tend to be tight: limited storage, booked deliveries and access shared with other trades. Mastic is normally one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Location
- Brentford (TW8, W3, W4, W5)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
For managing agents and facilities managers
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
Questions about Brentford
Can you cope with the access rules in a London building?
Yes. Inductions, permits and timed loading are routine for us in London. Send the building rules and access times with your enquiry. The ULEZ covers the whole of Greater London, which we allow for
Can work at a site such as University of West London (Brentford Campus) fit around teaching?
Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Can you just add new sealant on top?
No. Fresh silicone won’t grip cured silicone, so the existing bead is removed entirely. Nothing else gives a bond that lasts.
Is it fine to apply new sealant on top of old?
No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
How long does a job like this take?
That varies with the scale of the job, though a typical visit usually takes anything from a single day to several weeks, depending on joint lengths, access and the weather. For bigger or phased jobs, we will set out a timescale with the quote.
Which sealant do you use on facades?
Low-modulus, neutral-cure silicone suits many facade and perimeter joints. Hybrid or MS polymer, polyurethane and polysulphide sealants suit others, depending on the substrate and the specification.
Is old mastic on our building likely to contain asbestos?
In older non-domestic buildings, old sealant can contain asbestos. Check the asbestos register or survey before it is disturbed; if it’s suspected, work stops until it has been tested. We don’t remove asbestos-containing materials.
Nearby places to Brentford
What else we do in Brentford
New build and refits around Brentford
Brentford has plenty of hotels close by, all within 2 miles. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Site traffic in Brentford falls within London’s ULEZ, like everywhere else in Greater London. Deliveries are booked and storage is tight, so mastic materials come in as needed.
University estates such as University of West London (Brentford Campus) (less than half a mile west of Brentford) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. For a contractor working at a hospital such as Clayponds Hospital, which lies north-east of Brentford, perimeter and facade sealing is planned around patients and deliveries. Work at a hotel such as Best Western Northfields Ealing Hotel, 0.9 miles to the north-west of Brentford, tends to be programmed around bookings, mastic included.
Brentford is about 2 miles south of Ealing, in Greater London. We cover Brentford and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 764 places in Greater London, from busy centres to rural villages. Sites around London have their own page, about 9 miles away.
Commercial sites across TW8, W3, W4 and W5 are covered for facade joints. For a building on High Street, Market Place and New Road or nearby, send details and we’ll quote for facade joints. With the A4 and A315 nearby, Brentford is easy to get to with materials and equipment. Nearby places we also cover include Brentford End (1 mile south-west), Northfields (1 mile north-west), Gillette Corner (1 mile west), Isleworth (2 miles south-west) and Spring Grove (2 miles west) for facade joints. Further afield, our area takes in London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (4 miles east), St Pancras (8 miles east) and Shoreditch (10 miles east).
Local landmarks in Brentford
Recent enquiries here include premises near Library for Iranian Studies, Brentford School for Girls and Kew College Prep, among other places. Other local landmarks include The Brook pub (less than half a mile south-west) and Kew Green (0.7 miles south-east). Brentford has its own railway station: Brentford station. Other landmarks nearby include Treaty Centre (3 miles south-west) and Musical Museum (0.5 miles east). Not far away are Kew Gardens Lake and Long Wood.
How the job changes by surface
Window and door perimeters
Frames grow and shrink with temperature, and the perimeter joint has to follow. The rod limits depth, leaving the bead able to flex as the frame moves.
Perimeter joints at frames and structure
These frame-to-structure joints take a lot of movement and weather. We cut them out, prepare both faces and reseal to the specification with a product suited to glazing perimeters.
How a job runs
We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and each bead is tooled to a neat concave finish. 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.
- We start with photos, drawings or a visit to see the joints and agree access.
- We confirm the joint type, movement and the specified product.
- The existing bead comes out in full.
- Primer is applied where the maker specifies it.
- Backing rod is fitted and the new sealant gunned in and tooled.
- We go over the completed work with you before leaving.
Before we start on site
- Tell staff and tenants when we will be in
- Share the asbestos register for older buildings
- Let us know about inductions and permits
Get a fixed quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or email a schedule or drawings.
Advice
Why deal with it now?
Resealing a few window perimeters is a small job; repairing water-damaged interiors and fixings is not. Water through a failed joint rarely stays where it starts. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.
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 quote and we’ll explain how it’s made up.
Why choose Mastic Doctor in Brentford
- Joints cleaned back to sound surfaces
- RAL and finish matching where the product range allows
- Standard and matched colours in many product ranges
- One contact handling all your sites
Take a look at what affects the cost and our accreditations and insurance.
Site staff or a sealant specialist?
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.