Lissenden Gardens facade sealing
Commercial sealant work in Lissenden Gardens for contractors, FMs and building owners: facade joint and window perimeter sealing on commercial buildings, quoted at a fixed price.
- Leaks at window and door perimeters
- Failed sealant on precast panel joints
- Air leaks through failed facade joints
Facade sealing for businesses in Lissenden Gardens
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Doing it in-house
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
About our facade sealing in Lissenden Gardens
External joints face UV, rain, temperature swings and building movement all year, and they wear out over time. How long a joint lasts depends on the movement it takes, its exposure, the product and how well it was installed. When the time comes, we cut the old sealant out completely and start again. If you’re dealing with gaps between rainscreen or cladding panels and draughts around frames and panels, we can put it right, whatever the surface. Most enquiries from Lissenden Gardens 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.
Building sites in London tend to be tight: small compounds, delivery slots and shared hoists and scaffold. We fit around the programme, sealing each elevation or floor as other trades hand over.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.
- Where
- Lissenden Gardens (NW5, NW3, N19)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Your questions answered
Can you cope with the access rules in a London building?
Yes, most London buildings have access rules of some kind, and we plan around them. Say when the building is occupied and when it’s quiet, and we will plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it
Will you plan work around the academic year at somewhere like American University in London?
Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Do your applicators hold CSCS cards?
Yes. Should the site need card details in advance, let us know and we will send them with the quote.
Is your workmanship covered by a guarantee?
Yes. It runs for twelve months and covers how we prepared and sealed the joints, though not damage or work by other trades.
Can you handle several sites?
Yes. Several buildings can share a single quote, and you deal with one contact throughout.
How long do sealant joints last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
What site paperwork can you supply?
Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm them with the quote.
After the work
Once the work is signed off, a little attention goes a long way:
- Note when each elevation was last resealed
- Combine resealing with other works that need access
- Avoid harsh cleaners on facade sealant
- Check that rainwater leaves the facade the way it was designed to
Hold back any cleaning crew until the joints have had their stated cure time. Pressure washers and harsh cleaners can damage a fresh bead and tell your cleaning contractor.
Tie resealing in with redecoration, cladding repairs or other access. Sharing the access keeps the cost down.
Why act early in Lissenden Gardens
Failed joints let in more than water: occupants notice draughts and cold spots around windows. Resealing deals with the draught as well as the leak. In Lissenden Gardens, 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 specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Why choose Mastic Doctor in Lissenden Gardens
- Standard and matched colours in many product ranges
- Public liability insurance in place
- Clear, fixed quotes
- One number for every site we cover
Take a look at how commercial sealant jobs are priced and our accreditations and insurance.
Our process
When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, with the work itself usually taking a day or two for a few elevations, and longer where access has to be moved around the building. Planning a London job such as one in Lissenden Gardens starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we will schedule to suit.
- First we review photographs, drawings or what we saw on a visit, and agree how each joint will be reached.
- Failed sealant is cut out along its full length.
- Both faces are cleaned and, where the product needs it, primed.
- Backing rod, or bond-breaker tape in shallow joints, limits the depth.
- The new sealant goes in and is tooled firmly onto both faces.
- We walk the finished joints with you before handing over.
Getting the site ready
- Send your site hours and access windows
- Move anything stored against the joints
- Let us know about inductions and permits
Getting a fixed quote
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or call the office on 01277 525 020 or email us to discuss it first.
Advice
Places near Lissenden Gardens
What else we do in Lissenden Gardens
Surface by surface
Perimeter joints at frames and structure
Perimeter joints at frames often show their age first. We cut them out, prepare both faces and reseal to the specification using a sealant classified for that use.
Render and coated surfaces
Rendered and painted facades need a sound edge for the sealant to bond to. We remove flaking material so the bead bonds to a firm surface, and we’ll mention any edges that need repair.
Common problems we fix in Lissenden Gardens
Most facade joints fail through age and weathering. UV and weather harden the sealant until it can’t stretch with the building.
What tends to prompt an enquiry:
- Perimeter sealant that has split or peeled away
- Cladding panel joints that have opened up
- Unsightly perimeter sealant on a visible elevation
- Previous reseals run over old sealant
New wings at hospitals like Royal Free Hospital, 0.7 miles to the west of Lissenden Gardens, bring long runs of window and panel joints to seal.
Questions to ask before you book
- Their approach to joint depth and backing
- Whether primer will be used where the manufacturer specifies it
- What level of public liability insurance do they hold?
- What site paperwork they can supply
Facades, frames and programmes in Lissenden Gardens
A 2-mile radius around Lissenden Gardens takes in plenty of hotels. When hotels extend or refit, the work is usually squeezed between peak periods, mastic included. The ULEZ covers the whole of Greater London, Lissenden Gardens included, so site vehicles need to meet its standards or pay the daily charge. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.
For a contractor at a hotel such as Haverstock Hotel, 0.8 miles south-west of Lissenden Gardens, the mastic often has to be finished before a reopening date. For contractors at a college like Working Men’s College, 0.8 miles to the south-east of Lissenden Gardens, perimeters and internal sealant are timed for the holidays.
Lissenden Gardens is about 1 mile east of Hampstead, in Greater London. We send applicators to Lissenden Gardens for facade joints, handled exactly as we handle every other area. Lissenden Gardens is one of 764 places we cover in Greater London for facade joints.
Anyone looking for facade sealing in NW5, NW3 and N19 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Buildings on Rona Road, Dale Road and Fleet Road are within our area. Just outside Lissenden Gardens, we also work in Gospel Oak (1 mile south), Dartmouth Park (1 mile north-east), Tufnell Park (1 mile east), Kentish Town (1 mile south) and Chalk Farm (1 mile south). A short drive away, we cover London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south-east) and Shoreditch (4 miles south-east).
Local landmarks in Lissenden Gardens
Around Lissenden Gardens, our work takes us to commercial buildings near Parliament Hill, The Royal School and Gospel Oak Primary School, among other places. You’ll also find The Bull and Last pub (under half a mile north-east) and Cecil Sharp House (1.3 miles south). Lissenden Gardens has its own railway station: Gospel Oak station. Well-known places in the area include Royal Northern Hospital (1.2 miles east) and Montfichet's Tower (3.7 miles south-east). Not far away are Parliament Hill and The Long Water.