Facade and window perimeter sealing in Hampstead, Greater London
Facade sealing for Hampstead, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Leaks at window and door perimeters
- New sealant peeling off old mastic
- Staining on stone next to old sealant
Need facade sealing in Hampstead?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Facade sealing for commercial buildings in Hampstead
Most facade joint failures trace back to the joint, not just the sealant. Joint width needs to match how far the joint moves and how far the sealant can stretch, while rod fixes the depth and stops the bead sticking to the rear. We work on perimeter joints where frames meet the structure, stone and brick facade joints and window and door perimeters, and what we’re called in for most is previous reseals run over old sealant and unsightly perimeter sealant on a visible elevation. A specialist sealant contractor works differently from a general builder: on jobs in Hampstead, preparation and product choice get the time they need.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.
Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Where
- Hampstead (NW3, NW6, NW11, N2)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
What affects the price in Hampstead
We price every job individually. The main factors are:
- The size and state of each joint
- Whether the work must be split into stages
- Quantities, in metres or numbers
- How accessible the joints are
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote.
Details that help us quote
Good information means a firmer quote. Helpful details to send:
- Approximate linear metres or a joint schedule
- Your programme or deadline
- Anything awkward about access or site hours
- Whether the building will be occupied during the work
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to give us a call on 01277 525 020 or send photos by email.
Towns and villages near Hampstead
Other services in Hampstead
From enquiry to sign-off
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes anything from a single day to several weeks, depending on joint lengths, access and the weather, and our waste is bagged and taken away as we go. 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.
- 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.
- The completed runs are checked with you, then the 12-month guarantee applies.
Getting the site ready
- Warn occupants and staff about the work
- Arrange parking or a loading space
- Share your working hours and any access restrictions
Getting a fixed quote
Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Read more
Hampstead: questions and answers
Can you work at a site such as The Quadrant Business Centre, by Hampstead?
Yes. Our area takes in Hampstead and its surroundings, with estates and business parks such as The Quadrant Business Centre included. A few photos and the unit address let us price the work.
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.
What will the job cost?
It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote and we’ll price it properly.
Do you take on small jobs?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.
Will you come and look before quoting?
Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we’ll arrange a visit before quoting.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day, and sign any area that should be left alone.
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.
Surface by surface
Render and coated surfaces
Where the joint will be painted over, a paintable hybrid or PU sealant may suit. The choice depends on the specification and finish.
Precast concrete panels
Precast panel joints have to absorb thermal and structural movement. We use a sealant with the right movement capability, set over backing rod, primed where the maker specifies.
Facades, frames and programmes in Hampstead
Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Hampstead. Deliveries are booked and storage is tight, so mastic materials come in as needed. There are plenty of hotels within about 2 miles of Hampstead. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.
Building work at universities like Regent's University London (2.1 miles south-east of Hampstead) is often timed for the summer, mastic included. Projects at colleges like City of Westminster College (1.8 miles south of Hampstead) tend to run to term dates, so the mastic is planned tightly. New units and refits on sites such as The Quadrant Business Centre (to the south-west of Hampstead) need their panel and perimeter joints sealed to the specification.
Hampstead is about 3 miles north-west of City of Westminster, in Greater London. We cover commercial sites throughout Hampstead, for single jobs and planned programmes alike. Hampstead is one of 764 places in Greater London on our list for facade joints.
We cover the NW3, NW6, NW11 and N2 postcode districts for facade joints. Among the streets we cover are Hampstead High Street, New End Square and The Mount Square, and sites on any of them can send details for a fixed quote. Main routes into Hampstead include the A1 and A502. Sites close to Hampstead are covered too, including Greenhill (1 mile north-east), West Hampstead (1 mile west), Fortune Green (1 mile west), Vale of Health (1 mile north) and South Hampstead (1 mile south). Nearby towns on our patch include London (5 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (3 miles south-east) and Shoreditch (5 miles south-east). Hampstead is one of the busier places in Greater London, and we take on facade joints for its commercial and public buildings.
Near you in Hampstead
Locally, jobs take us to sites close to South Hampstead High School, Kilburn Grange Park and St Anthony's Preparatory School, among other places. Nearby too are King William IV Public House (less than half a mile north-east) and Cecil Sharp House (1.7 miles south-east). Hampstead has its own railway station: Finchley Road & Frognal station. Well-known places in the area include Isokon Gallery (0.8 miles east) and New End Hospital (less than half a mile north). For a walk, there’s Belsize Wood and The Long Water.
Leave it or put it right?
Every shower drives water through a split perimeter bead. Behind the frame, that can mean damp plaster, stained ceilings, corroded fixings and damaged insulation. Resealing now costs less than repairing interiors later. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Why us?
- Public liability insurance in place
- Colour agreed before work starts
- Over 20 years of commercial sealing
- CHAS accredited
Read what affects the cost or our accreditations.
Keeping the joints sound
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Insist on a full cut-out when joints are renewed
- Clear debris that holds water against joints
- Walk the elevations once or twice a year
- Investigate damp beside windows promptly
Keep gutters, sills and drainage paths clear. Sealant copes better when water runs off the facade as designed rather than sitting against the joints.
In pre-2000 buildings, check the asbestos register before old sealant is cut out. Some older mastics contain it, and if it’s suspected, we stop until it has been tested.
Owners, agents and contractors
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Hampstead can form part of a wider programme across Greater London.
Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.