Mastic Sealing in North Greenwich
Need mastic sealing in North Greenwich? It’s simple: send details, get a quote, we seal, guaranteed.
- Patchy repairs in mismatched sealant
- Draught complaints from residents or tenants
- Window mastic that has split and shrunk
Mastic sealing across North Greenwich
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
About our mastic sealing in North Greenwich
There isn’t one mastic for every joint on a building. 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. Most enquiries involve window mastic that has split and shrunk and leaks at window and door perimeters, across balcony and threshold joints, window and door perimeters on blocks and shopfronts below residential blocks. Whether you call it commercial sealant work, mastic application or joint sealing, in North Greenwich it comes down to the same thing: the right product in a properly prepared joint.
For managing agents in North Greenwich, resident access, notice periods and the building’s rules shape the job. Work is planned with the agent so residents get notice and access is arranged in advance.
Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- North Greenwich (E14, SE8, SE10)
- Wider area
- Greater London
- Guarantee
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
What the job involves on each surface
External movement joints
Brickwork, blockwork and panel joints let a building move. Failed sealant in a movement joint lets water in.
Commercial and mixed-use buildings
Where retail and residential share a building, so phasing has to suit both. Tell us your site hours and access windows and we will plan around them.
Questions about North Greenwich
We manage a building near Greenwich station. Can you help?
Yes. Blocks of any size are within what we do. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.
Is Brookmarsh Industrial Estate, near North Greenwich, within your area?
Yes, sites like Brookmarsh Industrial Estate are within our area, along with the rest of North Greenwich. A few photos and the unit address let us price the work.
Is mastic sealing guaranteed?
A 12-month guarantee covers our work. It applies to our workmanship rather than damage or problems with the frames.
Can you send RAMS and CSCS details before starting?
Our credentials include CHAS, Constructionline and public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
Which sealant will you use?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Can you reseal a whole block or estate?
Yes, planned programmes suit estates and portfolios. You get a fixed quote per building or for the whole job.
How long before the joints can be used?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.
Nearby places to North Greenwich
Also in North Greenwich
Looking after buildings in and around North Greenwich
London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. We fit the programme to your notice periods. North Greenwich has three care or nursing homes no more than 2 miles away. Care home owners need frame and external mastic kept sound without unsettling residents.
For agents with blocks near Greenwich station, 0.8 miles south of North Greenwich, a block-wide mastic programme deals with frames, balconies and entrances in one go. Student accommodation around universities such as University of Greenwich - Greenwich Campus (to the south-east of North Greenwich) is usually managed block by block, which suits a planned mastic programme. Churches, halls and community buildings such as Church of St Nicholas are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
North Greenwich is about 1 mile north-west of Greenwich, in Greater London. If you’re looking for mastic sealing in North Greenwich, we can help. North Greenwich is one of 764 places in Greater London on our list for mastic joints.
If you need mastic sealing in E14, SE8 and SE10, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Creek Road, Wynan Road and Undine Road. Nearby places we also cover include 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). Bigger towns within reach include 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).
What’s near North Greenwich
Recent enquiries here include premises near Laban Centre, Canary Wharf College 3 and St. Paul's, among other places. Nearby too are Mudchute Park and Farm (less than half a mile north-east) and The Ferry House Public House (less than half a mile south-east). The closest station to North Greenwich is Greenwich station, roughly 0.8 miles south of the centre. A little further out are 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.
Quoting for work in North Greenwich
Each job is priced on its own details. The main factors are:
- Induction, permit and paperwork requirements
- The size and state of each joint
- Removal of failed or old sealant
- How accessible the joints are
There’s no price list, since every building and every scope is different. Call for a quote.
Details that help us quote
A few photos plus some basic facts will normally do. It helps to include:
- Your programme or deadline
- Clear photographs of the problem areas
- Anything awkward about access or site hours
- Drawings or a marked-up plan, if available
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
Maintenance after handover
Cleaning and maintenance staff play a part too. Pass these on to them:
- Track which buildings were done and when
- Start inspections with the most exposed faces
- Reduce knocks to communal area joints
- Plan resealing building by building rather than complaint by complaint
Our workmanship is covered for 12 months, so report any failure in that time. Beyond that, routine checks spot the next round of repairs.
Leaks at window perimeters spoil finishes and can affect frames. Early resealing is far simpler than repairs inside.
Diagnose, treat, sign off
Site rules come first: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you, and each area is checked before we leave it. For a job in North Greenwich, access comes first. Give us the hours we can be on site and we will schedule to suit.
- First we look at the mastic on each building and note what needs replacing.
- You get a fixed quote, priced per building where that helps your budgeting.
- 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.
Preparing the site
- Send your site hours and access windows
- For older buildings, check the asbestos register before work
- Flag any permit to work we’ll need
Ask for a quote
Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings that you can work with. For a chat about it beforehand, give us a call on 01277 525 020 or email a schedule or drawings.
Related advice
Leave it or put it right?
Piecemeal repairs over the years often leave mismatched sealant. A block-wide reseal gives one product, one colour and one guarantee. Failed sealant in a building in North Greenwich can quickly affect neighbours, tenants or the floor below. Putting it right early is less disruptive than dealing with the consequences.
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
What you get with us
- Constructionline member
- Public liability insurance in place
- Sealing commercial buildings since 2005
- One contact handling all your sites
Take a look at our cost guide or our accreditations and insurance.
Honest limits
We check first that sealant really is the fix. It isn’t the answer for:
- Substrate edges that need repairing first
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Glazing that needs replacing
If you’re not sure, just call 01277 525 020 or email drawings and photos and we’ll give you a straight answer.
What we seal
- Communal kitchens and washrooms
- Communal entrances and stairwells
- Balcony and threshold joints
- Window and door perimeters on blocks
- External wall and movement joints
- Shopfronts below residential blocks