Mastic sealant contractors in Feltham
Sealant work in Feltham for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.
- Leaks at window and door perimeters
- Patchy repairs in mismatched sealant
- Worn sealant at communal door frames
Mastic sealing for Feltham sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
From enquiry to sign-off
Tell us your site hours and access windows and we will plan around them. While we are working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. All of Greater London is in the ULEZ, and kerbside space in Feltham can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- Each block or building is walked and the failed joints recorded with the likely cause.
- A fixed quote follows, split by block or building if that suits you.
- The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
What we need from you
- Tell us what induction or permit system the site runs
- Share the asbestos register for older buildings
- Agree which areas must stay open
Getting a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.
Advice
Mastic sealing in Feltham, done properly
Different joints need different sealants. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint, and colours are confirmed for whichever product is used. We work on external wall and movement joints, balcony and threshold joints and communal entrances and stairwells, and what we are called in for most is mastic failing across several blocks on an estate and damp patches beside frames. Most enquiries from Feltham start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
London’s ULEZ covers every borough, and parking and loading rules vary street by street. For block-wide work, a place to park and store materials saves time on every visit.
Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Place
- Feltham (TW14, TW13)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Different surfaces, different methods
Communal areas
Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Fresh joints make shared areas look looked after.
Tenement and older buildings
Some old mastics in pre-2000 buildings contain asbestos, so we check the asbestos register or survey first. Suspect material is tested before work continues.
General trades versus a 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.
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Why it’s worth doing now in Feltham
Leaving failed external joints lets water reach the structure behind. That can lead to damp, staining and damage to finishes, which is harder to deal with than resealing. Getting scaffold, permits or access booked in Feltham takes effort, so it makes sense to deal with every failing joint while access is in place.
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
What you get with us
- Constructionline member for supplier checks
- A range of standard colours, depending on the product
- Sealing commercial buildings since 2005
- Fixed quotes based on photographs, drawings or a visit
Take a look at what affects the cost or our accreditations and insurance.
Also in Feltham
FAQs: Feltham
Do you work for managing agents with blocks near Feltham station?
Yes, we work for agents, landlords and housing associations with blocks of every size. We work to your notice and access arrangements.
Do you take on jobs in Feltham 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. We allow for the ULEZ, which covers every borough
Can you send RAMS and CSCS details before starting?
Let us know your requirements: tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We hold CHAS accreditation and Constructionline membership.
Who decides which product is used?
The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.
Do you cover Feltham?
Yes. Feltham is in our area and the rest of Greater London. For a quote, call the office on 01277 525 020 or send photos by email.
Can you reseal a whole block or estate?
Yes, planned programmes suit estates and portfolios. The quote can be split however suits your budgeting.
After the work
Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:
- Share your contractor requirements early
- Protect low-level joints in entrances
- Start inspections with the most exposed faces
- Include mastic in your cyclical inspections
If paintable sealant was used, decoration can follow once it has cured. Silicone usually can’t be painted, so keep decorators off it unless told otherwise.
Planned resealing is easier to budget than emergency repairs. A programme can start with the worst buildings and work down the list.
Owners, agents and contractors
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, 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 Feltham can sit alongside others in a wider programme across Greater London.
Frames, entrances and external joints in Feltham
For a London block, the agent or landlord typically handles notices to residents and access to flats. We plan around the notices and access you arrange.
Landlords with units on estates such as Maple Industrial Estate (0.5 miles south of Feltham) can bring frame, door and external mastic across several units into one programme. Schools and community buildings such as St Lawrence Catholic Primary School need frame and external mastic kept sound like any building. If you manage student housing near a university such as St Mary's University, 3.5 miles to the east of Feltham, the summer turnaround is the time for mastic.
Feltham is about 6 miles south-west of Ealing, in Greater London. We send applicators to Feltham for mastic joints, handled exactly as we handle every other area. Feltham is one of 764 places in Greater London on our list for mastic joints. There’s a separate page for London, roughly 14 miles from Feltham.
Postcode districts covered here: TW14 and TW13 for mastic joints. Streets here include High Street, Railway Terrace and Sandycombe Road, and sites on any of them can send details for a fixed quote. You’ll find Feltham on or near the A244 and B377. If your building is just outside Feltham, we cover Bedfont (1 mile west), Hounslow (1 mile south-west), Hatton (1 mile north), Ashford Common (2 miles south-west) and Cranford (2 miles north). A short drive away, we cover London (14 miles east), City of Westminster (12 miles east), Marylebone (12 miles north-east), Kensington (10 miles east), St Pancras (14 miles north-east) and Shoreditch (15 miles east).
Landmarks near Feltham
We work on buildings around Hounslow Heath, Moon On The Square pub and Rivers Academy West London. There’s a railway station in Feltham itself: Feltham station. Nearby you will also find Hounslow Hospital (2.3 miles north-east) and Kempton Steam Museum (1.6 miles south). The countryside around Feltham includes Richmond Hill and Pevensey Road Nature Reserve.