Mottingham construction mastic
Need construction mastic in Mottingham? It’s simple: send details, get a quote, we seal, guaranteed.
- Frame gaps too wide for sealant alone
- A mastic package split between trades with no clear owner
- External joints sealed in damp or cold conditions that are now failing
Construction mastic for businesses in Mottingham
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How we handle construction mastic in Mottingham
On a new build, the mastic package is one of the last trades through each area. Mastic Doctor takes on mastic packages for main contractors and developers. Most enquiries involve external joints sealed in damp or cold conditions that are now failing and sealant knocked or painted over by other trades, across sanitary and kitchen joints, cladding and panel joints and window and door perimeters. Facilities teams, main contractors and managing agents in Mottingham tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Building sites in London tend to be tight: small compounds, delivery slots and shared hoists and scaffold. 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.
We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Location
- Mottingham (SE9, SE12, BR1)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Owners, agents and contractors
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around Mottingham. Several sites can go on one quote, which keeps the paperwork simple.
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Mottingham can sit alongside others in a wider programme.
When something else is needed
Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:
- Faulty frames rather than failed sealant
- Frame gaps too wide for sealant, which the installer needs to correct
- Approving fire stopping as compliant
If you are not sure, just give us a call on 01277 525 020 or send photos by email and we will give you a straight answer before you book.
Where we work in Mottingham
- Cladding and panel joints
- Brick and block movement joints
- Floor and skirting junctions
- Internal decorators’ caulk
- Sanitary and kitchen joints
- Window and door perimeters
When to bring in 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. That’s why many clients bring in a specialist from the beginning.
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
From enquiry to sign-off
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- We start with the drawings, specification and programme.
- Quantities are measured and a fixed price returned.
- We agree with the site team which areas come first.
- Plots or floors are sealed as they’re handed over.
- Joints are prepared, backed and sealed to the specification.
- After snagging, the work is handed over under our 12-month guarantee.
Preparing the site
- Arrange parking or a loading space
- Make sure the joints can be reached
- Tell us your opening times and when work is allowed
Quotes
A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or email a schedule or drawings to discuss it first.
Advice
Places near Mottingham
What else we do in Mottingham
Looking after the joints
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:
- Ask for joint and product checks before the package is urgent
- Keep finished joints away from paint, plaster and scrapers
- Put any product change through the designer first
- Bring the mastic contractor in after the last trades are through
Tell the builders’ clean team which areas have new sealant. Blades and abrasive pads are the commonest cause of damage at the final clean.
Leaving the mastic snag list to the end squeezes everyone. Clearing snags area by area spreads the work out.
Leave it or put it right?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. If the frame is in good order, cutting out and resealing the perimeter can be all it needs. If the frame is life-expired, we will tell you. In Mottingham, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.
The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.
Why appoint us
- Constructionline member for supplier checks
- Failed material removed, not covered up
- One phone line for London, the South East and Scotland
- Colours chosen to suit frames, cladding or finishes where possible
Read what affects the cost and our accreditations.
Common questions from Mottingham clients
Can you cope with the access rules in a London building?
Yes, we plan every London job around the building’s own access rules. Send the building rules and access times with your enquiry. We allow for the ULEZ, which covers every borough
Is hospital work, at somewhere like Eltham Community Hospital, something you do?
Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Do you work to architects’ specifications?
Yes. Send it with your enquiry, and we will price the work to it.
Do you need to see the site first?
That depends on the size and complexity of the job. Simple work can often be priced from photos, while larger or less clear jobs get a site visit first.
What do you charge?
It depends on the job: quantities, access, the product and any phasing. Call for a fixed quote.
Do you offer coloured sealant?
It depends on the product. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.
Is any job too small?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.
New build and refits around Mottingham
Site traffic in Mottingham falls within London’s ULEZ, like everywhere else in Greater London. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. The area within 2 miles of Mottingham holds a number of hotels. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight.
When units on a site such as Green Lane Business Park, 1.1 miles east of Mottingham, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. For a contractor at a hotel such as Baring Hall Hotel, 0.7 miles west of Mottingham, the mastic often has to be finished before a reopening date. Projects at colleges like Hadlow College, 0.6 miles north-west of Mottingham, tend to run to term dates, so the mastic is planned tightly.
Mottingham is about 1 mile south-west of Eltham, in Greater London. Businesses, contractors and managing agents in Mottingham use us for work on mastic packages, as part of our coverage of Greater London. 764 places across Greater London fall within our area, Mottingham among them. There’s a separate page for London, about 7 miles away.
We take on mastic packages across the SE9, SE12 and BR1 postcode area. We cover commercial and managed buildings on Horley Road, Dorset Road and Albert Road. Nearby places we also cover include Chinbrook (1 mile south-west), Grove Park (1 mile west), Coldharbour (1 mile east), Middle Park (1 mile north) and Horn Park (1 mile north-west) for mastic packages. Bigger towns within reach include London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
Around Mottingham
Around Mottingham, our work takes us to commercial buildings near Colfe's School, Chinbrook Meadows and Haberdashers' Aske's Knights Academy, among other places. The nearest railway station is Grove Park station, about 0.7 miles west. Nearby you will also find Greenwich Castle (3.5 miles north-west) and Prefab Museum (1.7 miles west). Green spaces nearby include Summer Hill and The Tarn.