Gunnersbury mastic sealing
Need mastic sealing in Gunnersbury? It’s simple: send details, get a quote, we seal, guaranteed.
- Cracked, hardened mastic round windows on a block
- A mix of products and colours from past repairs
- Worn sealant at communal door frames
Mastic sealing across Gunnersbury
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Do you need mastic sealing in Gunnersbury?
Occasionally the substrate fails, not the sealant for example where render or brick edges crumble. If the edges are unsound, we say so before quoting the sealing.
What tends to prompt an enquiry:
- Damp patches beside frames
- The same joint failures repeated across a portfolio
- Window mastic that has split and shrunk
- No planned programme for sealant
If you own or manage units on a site such as Kew Retail Park, which lies south of Gunnersbury, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
Comparing quotes
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Their plan for phasing and protecting the area
- Health and safety accreditation such as CHAS
- How the existing material will be dealt with
Mastic sealing in Gunnersbury
For over 20 years we have resealed joints for owners, agents and landlords. Our applicators are CSCS-carded and we hold public liability insurance. Resealed mastic joints in Gunnersbury carry our 12-month guarantee. If you have estate-wide sealant that is simply worn out and open joints in brickwork or panels, we can help, on communal kitchens and washrooms, window and door perimeters on blocks and external wall and movement joints alike. Searching for sealant specialists in Gunnersbury? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
London’s ULEZ covers every borough, and parking and loading rules vary street by street. For a block or estate, it helps to know where we can park and stage materials.
We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Location
- Gunnersbury (W4, W3, TW8)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Nearby places to Gunnersbury
What else we do in Gunnersbury
Keeping the joints sound
Keep the joints in good shape with a few simple steps:
- Share your contractor requirements early
- Protect low-level joints in entrances
- Make mastic part of routine maintenance checks
- Make it easy for occupiers to report draughts
Ask residents or tenants to report draughts or leaks round windows early. A quick report keeps a small repair small.
Mastic fails gradually, then all at once in a wet spell. Acting at the first signs keeps it a straightforward reseal and saves internal repairs.
What sealant work can’t fix
Honesty saves time and money. Fresh joints won’t solve:
- Leaks through the frame itself rather than the perimeter
- Water coming in from the roof or rainwater goods
- Substrate edges that need repairing first
If in doubt, give us a call on 01277 525 020 or email us and we’ll say what we think.
Surfaces we seal
- Shopfronts below residential blocks
- Balcony and threshold joints
- Window and door perimeters on blocks
- External wall and movement joints
- Communal kitchens and washrooms
- Communal entrances and stairwells
For managing agents and facilities managers
Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.
Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Gunnersbury can sit alongside others in a wider programme.
Doing it in-house
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
Your questions answered
Do you take on jobs in Gunnersbury where loading and access are tightly controlled?
Yes. Inductions, permits and timed loading are routine for us in London. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it
Can you work at a site such as Kew Retail Park, by Gunnersbury?
Yes. We cover Gunnersbury and the area around it, including industrial estates, business parks and retail parks such as Kew Retail Park. Send details of the unit and the work through our quote form for a quick quote.
Do you need to see the site first?
Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit.
Do you work with property factors and landlords?
Yes, that’s exactly who this service is for. We work through buildings in a planned order with dates agreed in advance.
Do you guarantee the mastic work?
Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.
Can weather delay the job?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
Can you plan resealing across several buildings?
Yes. We survey and price each building, then work through them in order starting wherever is most urgent.
How a job runs
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. In Gunnersbury, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.
- First comes a look at the joints and, for older buildings, the asbestos records.
- The products and programme are set out in a fixed quote.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
Preparing the site
- Tell us which areas need to stay in use
- Move anything stored against the joints
- Tell us your opening times and when work is allowed
Getting a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to speak to us on 01277 525 020 or use the quote form with what you know.
Advice
Mastic sealing in Gunnersbury: the local picture
Blocks in London are typically run by managing agents, landlords or housing associations, with residents to notify and access to arrange. We work to your notice and access plan.
Older community buildings, St Michael's Church among them, often have frames of mixed ages whose mastic varies. For agents with blocks near Gunnersbury station, under half a mile south-east of Gunnersbury, a block-wide mastic programme deals with frames, balconies and entrances in one go.
Gunnersbury is about 1 mile south of Acton, in Greater London. Our applicators travel to Gunnersbury for work on mastic joints. Our Greater London coverage takes in 764 places. Sites around London have their own page, about 8 miles away.
Anyone looking for mastic sealing in W4, W3 and TW8 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Buildings on Kew Road, Kent Road and Power Road are within our area. Being close to the A3000, Gunnersbury is straightforward for us to reach. We also cover Strand-on-the-Green (1 mile south), Kew (1 mile south), Grove Park (1 mile south-east), Chiswick (1 mile east) and Turnham Green (1 mile south-east) for mastic joints. A short drive away, we cover London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (3 miles east), St Pancras (7 miles east) and Shoreditch (9 miles east).
Local landmarks in Gunnersbury
Around Gunnersbury, our work takes us to commercial buildings near Clayton Hotel Chiswick, Kew College Prep and Ark Acton Academy. Other local landmarks include Turnham Green (0.5 miles east) and Library for Iranian Studies (1 mile north). Gunnersbury has its own railway station: Gunnersbury station. Nearby you’ll also find Barnes Hospital (2 miles south-east) and Livat Hammersmith (2.1 miles east). The countryside around Gunnersbury includes Kew Gardens Lake and Castlebar Hill.