Bexleyheath mastic sealing
Looking for mastic sealing in Bexleyheath? It’s simple: send details, get a quote, we seal, guaranteed.
- Damp patches beside frames
- Cracked, hardened mastic round windows on a block
- Patchy repairs in mismatched sealant
Mastic sealing in Bexleyheath
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Mastic sealing in Bexleyheath, done properly
In buildings from before 2000, some old mastics contain asbestos. We check the asbestos register or survey before any old sealant is cut out and if it’s suspected, work stops until it’s tested. We don’t remove asbestos-containing materials. We work on external wall and movement joints, communal kitchens and washrooms and window and door perimeters on blocks, and what we’re called in for most is the same joint failures repeated across a portfolio and window mastic that has split and shrunk. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Bexleyheath, preparation and product choice get the time they need.
For managing agents in Bexleyheath, resident access, notice periods and the building’s rules shape the job. We work to the agent’s notice and access plan, so residents know what’s happening.
Our workmanship is guaranteed for 12 months. If our installation lets you down in that time, we return and fix it.
- Location
- Bexleyheath (DA7, DA6, DA16)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
From enquiry to sign-off
A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself normally takes one or more days per building, depending on the joint lengths and the access, and our waste is bagged and taken away as we go. All of Greater London is in the ULEZ, and kerbside space in Bexleyheath can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We inspect the joints, building by building, and record what has failed and why.
- 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.
- We remove the old mastic completely and clean the joint faces back.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
What we need from you
- Share your working hours and any access restrictions
- Make sure the joints can be reached
- Share the asbestos register for older buildings
Ask for a quote
For a fixed quote, speak to us on 01277 525 020 or use the quote form with the site address and an outline of the work. Our quote form is another easy route.
Related advice
General trades versus a specialist
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Your questions answered
Can you quote for a block close to Bexleyheath station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
Will you work in a care home in Bexleyheath without moving residents out?
Yes, with the manager deciding the order and timing of rooms. Tell us about any infection-control or safeguarding requirements and we will work to them.
Is asbestos a concern with old mastic?
Asbestos removal isn’t part of our work. If old sealant is suspected, work stops until it’s tested in line with the dutyholder’s asbestos management.
Can you seal joints high up on a block?
It depends on the building. How upper joints are reached is agreed before work is booked so there are no surprises.
Can you take on resealing for a block portfolio?
Yes, that’s exactly who this service is for. We work through buildings in a planned order so you can plan around it.
What paperwork can you provide?
Let us know your requirements: tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We hold CHAS accreditation and Constructionline membership.
Which sealant will you use?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
What else we do in Bexleyheath
What happens if it’s left?
Replacing mastic before water gets in is a planned job. Once water has tracked in, the repair list grows and occupiers notice. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.
The product called for affects the cost, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
What you get with us
- CSCS-carded applicators
- One phone line for London, the South East and Scotland
- 12-month guarantee on workmanship
- Matching to RAL references, product permitting
Read how commercial sealant jobs are priced and our accreditations and insurance.
Surface by surface
Tenement and older buildings
Some old mastics in pre-2000 buildings contain asbestos and the register is checked before anything is disturbed. If it’s suspected, work stops until it’s tested.
Commercial and mixed-use buildings
Commercial buildings have mastic at shopfronts, entrances and external joints. A planned programme suits multi-building portfolios.
What sets the cost
Before we quote, we look at:
- Access and working height
- How much there is to seal
- Whether old sealant has to be cut out first
- Backing rod, priming and other preparation
There’s no price list, since every building and every scope is different. Call for a quote and we will price your job on its own details.
Details that help us quote
Good information means a firmer quote. When you get in touch, include:
- Any dates the work must fit around
- Rough lengths or quantities, or drawings if you have them
- Any specification or named product
- Whether the building will be occupied during the work
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, give us a call on 01277 525 020 or email drawings and photos.
Frames, entrances and external joints in Bexleyheath
Blocks in London are normally run by managing agents, landlords or housing associations, with residents to notify and access to arrange. We plan around the notices and access you arrange. Bexleyheath has three care or nursing homes no more than 2 miles away. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents.
Trustees of buildings like Trinity Baptist Church can bring frame and external mastic into a planned maintenance list. Student accommodation around universities such as University of Greenwich Avery Hill Campus, 2.7 miles to the west of Bexleyheath, is usually managed block by block, which suits a planned mastic programme.
Bexleyheath is about 3 miles south-east of Plumstead, in Greater London. We send applicators to Bexleyheath for mastic joints. Our Greater London coverage takes in 764 places, large and small. Our London page has more on work in that area.
Business premises anywhere in DA7, DA6 and DA16 are within our area. We cover commercial and managed buildings on Lion Road, Hyde Road and Upton Road and the roads nearby. If your building is just outside Bexleyheath, we cover Upton (1 mile west), Crook Log (1 mile west), Blendon (1 mile south-west), Bexley (1 mile south) and Welling (1 mile west). Further afield, our area takes in London (10 miles west), City of Westminster (13 miles west), Marylebone (13 miles west), Kensington (15 miles west), St Pancras (12 miles north-west) and Shoreditch (10 miles north-west).
What’s near Bexleyheath
In Bexleyheath, that means premises near Danson Park, The Volunteer pub and Bexleyheath Academy. Bexleyheath has its own railway station: Bexleyheath station. Well-known places in the area include Bexley Hospital (under half a mile west) and Bexley Museum (1.2 miles south-east). For a walk, there’s Summer Hill and Wansunt Pit.
When to call us in Bexleyheath
Topping up old mastic is a common shortcut. New sealant won’t grip failed sealant and the repair soon fails.
Things that normally lead to an enquiry:
- Window mastic that has split and shrunk
- Damp patches beside frames
- Draught complaints from residents or tenants
- Open joints in brickwork or panels
For owners of several units at places like Old Bexley Business Park, 1.3 miles south-east of Bexleyheath, one programme can deal with frame and external mastic across the lot.
What to look for in a quote
- What site paperwork they can supply
- Whether their applicators hold CSCS cards
- Do they follow the manufacturer’s priming guidance?
- Whether old or failed sealant will be cut out, not overlaid