Construction and new-build mastic in North Greenwich, Greater London
Looking for construction mastic in North Greenwich? It’s simple: send details, get a quote, we seal, guaranteed.
- New external sealant already peeling away
- Missed perimeter joints on a new elevation
- Mastic snags holding up handover
Need construction mastic in North Greenwich?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
When to bring in a specialist
Redoing a failed joint normally costs more than getting it right at the outset, 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.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.
Construction mastic in North Greenwich
Buyers, tenants and clients notice sealant lines long before they notice the structure. Untidy or missed joints are among the commonest snag items, and every return visit costs time. Our aim is joints that pass at the first inspection, area by area through the programme. We work on brick and block movement joints, cladding and panel joints and sanitary and kitchen joints, and what we’re called in for most is snag items on joints that need redoing before handover and existing joints on a refurb that need cutting out and resealing. Most enquiries from North Greenwich start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
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.
Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.
- Place
- North Greenwich (E14, SE8, SE10)
- Wider area
- Greater London
- Guarantee
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Aftercare for building managers
After handover, a little attention goes a long way:
- Put any product change through the designer first
- Bring the mastic contractor in after the last trades are through
- Ask installers to correct oversized gaps first
- Plan external elevations with the weather in mind
Our 12-month guarantee covers the workmanship from sign-off. The guarantee covers how we sealed, not later damage by other trades which is why protection after sealing matters.
Oversized gaps are a problem better caught early. Sealant stretched over an oversized gap won’t last, so the installer needs to correct it first. We flag them as soon as we see them.
FAQs: North Greenwich
Is a hospital such as Blackheath Hospital somewhere you can work?
Yes, hospitals are one of the sectors we cover. We follow the site’s permits, sign-in and infection-control procedures in every area.
Could you schedule work at a campus like University of Greenwich - Greenwich Campus for the vacation?
Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Do you seal on top of existing sealant?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.
Can fire-rated sealing at service penetrations be included?
Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the manufacturer’s tested details. The design and sign-off belong to the designer, fire engineer or building control.
What joints do you seal on a new build?
It depends on the specification, but most packages include frame perimeters, sanitary and kitchen joints, caulking where specified and a snagging pass.
Building and refurbishing in North Greenwich
A good number of hotels sit less than 2 miles from North Greenwich. Hotel extensions and refits typically have to fit around bookings, so mastic dates are tight. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in North Greenwich. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.
New units and refits on sites such as Brookmarsh Industrial Estate (to the south of North Greenwich) need their panel and perimeter joints sealed to the specification. For contractors on a campus like University of Greenwich - Greenwich Campus, which lies south-east of North Greenwich, facade and perimeter sealing has to fit around students and term dates.
North Greenwich is about 1 mile north-west of Greenwich, in Greater London. Across the E14 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. North Greenwich is one of 764 places we cover in Greater London.
Work on mastic packages is covered throughout E14, SE8 and SE10. Among the streets we cover are Creek Road, Wynan Road and Undine Road, and sites on any of them can send details for a fixed quote. Sites close to North Greenwich are covered too, including Isle of Dogs (1 mile south-east), Millwall (1 mile west), Cubitt Town (1 mile north-east), Deptford (1 mile south-west) and Greenwich (1 mile south-east). Further afield, our area takes in London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).
Local landmarks in North Greenwich
Recent enquiries here include premises near Laban Centre, Canary Wharf College 3 and St. Paul's. You will also find Mudchute Park and Farm (under half a mile north-east) and The Ferry House Public House (under half a mile south-east). The nearest railway station is Greenwich station, roughly 0.8 miles south of the centre. Well-known places in the area include Old Royal Naval College (0.7 miles south-east) and Greenwich Castle (1.1 miles south-east). Not far away are Sue Godfrey Nature Park and Tower Hill.
On site: what to expect
Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.
- Drawings, the sealant specification and your programme come to us for pricing.
- You receive a fixed quote listing scope, products and phasing.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- We seal each plot or floor as it’s released to us.
- Every joint is prepared, set to depth and sealed with the specified product.
- Snags are cleared before handover and completed areas carry our 12-month guarantee.
Before we start on site
- Tell us your opening times and when work is allowed
- Send any specification or drawings in advance
- Let us know about inductions and permits
Ask for a quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
Related advice
How the quote is worked out
Quotes vary with the job. Expect it to depend on:
- The product specified
- How accessible the joints are
- Site requirements such as inductions and permits
- Location, for remote and island sites
A quote for mastic packages depends on how many there are, their condition and the access. Call for a quote.
What to include in your enquiry
A few photos plus some basic facts will normally do. Please tell us:
- Whether an asbestos survey exists
- Clear photographs of the problem areas
- The product your specification calls for
- Drawings or a marked-up plan, if available
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.
Do you need construction mastic in North Greenwich?
Value-engineered products sometimes end up in the wrong joints. A general-purpose silicone on a facade or a caulk in a wet area won’t perform like the specified product. We use what’s specified, and any substitute goes to you for acceptance.
Look out for the following:
- Failed sealant in an existing building being refurbished
- Oversized or tapered gaps around new frames
- Mastic snags holding up handover
- Bath and shower joints scraped during the final clean
When a college such as Bellerbys College London (0.5 miles south of North Greenwich) builds or refurbishes, the mastic package usually has to fit around students and staff.
What your quote should include
- Which product they’ll use, and why it suits the joint
- Their pre-qualification and accreditations
- Their public liability cover
- Whether old or failed sealant will be cut out, not overlaid
How the job changes by surface
Fire-rated sealant where specified
Fire-rated sealant is one type of fire-stopping product. Collars, wraps, batts and boards are specified for other services. Tell us what records you need and we’ll confirm with the quote.
External facade and movement joints
Many facade substrates need a primer before sealing. Primer goes on where the sealant maker calls for it, and seal only with a dry joint inside the product’s temperature range.