Greater London · England

Glazing & conservatory sealant in Hampstead Garden Suburb, Greater London

Glazing silicone in Hampstead Garden Suburb from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.

  • Cracked silicone between glass panels
  • Drips on the inside of a conservatory window
  • Mouldy sealant around glass panels

Trusted glazing silicone in Hampstead Garden Suburb

Glazing silicone for homes and businesses in Hampstead Garden Suburb

Conservatory leaks often start at a sealant joint at the glass-to-frame or frame-to-wall joints. We find the joint that’s letting water in and renew it and tell you plainly if the cause is something else. We work on shower screens, rooflights and glass-to-frame joints, and people most often call us about a quick top-up bead that didn’t last and water getting into a conservatory at the joints.

London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.

Every job comes with a 12-month guarantee.

Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter
Location
Hampstead Garden Suburb (NW11, N2, N3)
Region
Greater London
Cover
A year, on every job
Quotes
A clear price before any work starts
Telephone
0345 464 0079
Page updated
26 October 2026

Should I try it myself first?

The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.

Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.

What affects the cost of glazing silicone

Some jobs are bigger than they look, and some smaller. What affects the quote:

  • When we can work, for business premises
  • Mould in or behind the old joints
  • How easy the joints are to reach
  • The old material and how stubborn it is

Combining jobs into one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.

Helping us quote

What to tell us when you ask for a quote:

  • What’s wrong with the joints now
  • Access, such as stairs, a lift or height
  • Pictures of the joints, sent by email
  • Roughly how big the job is

Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.

FAQs for Hampstead Garden Suburb

I let a flat near Brent Cross West station. Can you help?

Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.

Is parking a problem for a job in Hampstead Garden Suburb?

In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.

What sealant do you use?

We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we are using.

Should I try DIY first?

It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.

Can I add another job to the visit?

Yes. More than one area can be quoted together.

Is it messy?

Very little: the area around the joints is protected first, and we tidy up before we go.

Is there any odour?

It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.

Which silicone is used for glass joints?

We pick a glazing silicone to suit the materials. Neutral-cure products suit most glass and frames.

For landlords and businesses

Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.

If you manage several properties in or around Hampstead Garden Suburb, several properties can go on one quote. Send us the addresses and the work at each.

What we do, step by step

We keep the work tidy and contained to the area we’re working on. The job usually takes a few hours, depending on how many joints need doing, and we tell you how long to leave it before we go. In a London area like Hampstead Garden Suburb, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.

  1. We look at the glazing and agree which joints need resealing.
  2. Old sealant is removed from the glass and frame.
  3. We clean and prepare the joint.
  4. New glazing silicone goes in and is finished neatly.
  5. The joints are checked before we leave.

Preparing for the visit

  • On commercial sites, let us know about site rules
  • Tell us about any water getting in
  • Tell us if parking is tricky

Get a quote

A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.

Get a quick quote

Related advice

What the job involves on each surface

Rooflights

Water around a rooflight is not always the sealant. We find the cause first.

Conservatory frames

The joints where the conservatory meets the house take a lot of movement. They’re resealed with a suitable sealant.

What glazing silicone looks like in Hampstead Garden Suburb

The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.

Historic houses such as Heath Hall, about 0.8 miles south-east, show how far back building around Hampstead Garden Suburb goes, and older homes nearby need a sealant that suits their walls. If you let a flat or house near Brent Cross West station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.

Hampstead Garden Suburb is about 1 mile south-west of East Finchley, in Greater London. We carry out glazing silicone for homes and businesses in Hampstead Garden Suburb. Our Greater London coverage runs to 764 places, and Hampstead Garden Suburb is one of them. You can also see our page for London, about 7 miles away.

Postcode districts we cover here for glazing silicone: NW11, N2 and N3. That includes homes and businesses on Maya Road, Oakwood Road and Bigwood Road. Hampstead Garden Suburb sits on or near the A1, so getting to you is simple. Other places close to Hampstead Garden Suburb include Temple Fortune (1 mile west), East Finchley (1 mile north-east), Golders Green (1 mile south-west), North End (1 mile south) and Vale of Health (1 mile south). Within a short drive, we also cover London (7 miles south-east), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (6 miles south), St Pancras (5 miles south-east) and Shoreditch (6 miles south-east).

Around Hampstead Garden Suburb

Around Hampstead Garden Suburb, our work takes us to homes and buildings near The Old White Lion pub, Brookland Infant and Nursery School and Lyttelton Playing Fields, among other places. Hampstead Garden Suburb’s nearest station is Brent Cross West station, roughly 2.1 miles south-west. Nearby you’ll also find Brent Cross Shopping Centre (1.7 miles west) and Jewish Museum - Finchley (0.9 miles north). The countryside around Hampstead Garden Suburb includes Darland's Lake and Parliament Hill.

Map of Hampstead Garden Suburb © OpenStreetMap contributors

Signs you need glazing silicone in Hampstead Garden Suburb

Not every leak is a sealant problem: failed roof panels, slipped glazing bars and blocked gutters cause them too. That is why we trace the leak first.

Any of these means the joints need attention:

  • New silicone smeared over old sealant
  • Glazing silicone that has cracked or come away
  • Leaks from the base of a shower screen
  • Failed joints on frameless glass

As a London address, Hampstead Garden Suburb can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.

Questions to ask before booking

  • Whether they’re fully insured
  • Whether you can choose the colour
  • How the surfaces are prepared before sealing
  • Whether the sealant suits the joint

How to choose a mastic man

What sealant work can’t fix

We’ll always be straight with you, so here’s what sealant cannot fix:

  • Glass that needs replacing
  • Frames that have decayed or split
  • Misting between the panes of a double-glazed unit (a failed unit for a glazier)

Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.

Where we work in Hampstead Garden Suburb

  • Conservatory frames
  • Glass-to-glass joints
  • Glass-to-frame joints
  • Shower screens
  • Rooflights
  • Glass balustrade bases
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job