Hertfordshire · England

Flaunden Glazing Silicone

Problem with your glazing joints in Flaunden? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.

  • Failed joints on frameless glass
  • Failed sealant around rooflight glass
  • Conservatory leaks at frame and glazing joints

Glazing silicone in Flaunden

How we handle glazing silicone in Flaunden

Glass replacement isn’t something we do and a misted double-glazed unit needs a glazier. What we do is the silicone around the glass, which is where many leaks start. If you have leaks where conservatory glass meets the frame and failed joints on frameless glass, we can help, on glass-to-glass joints, conservatory frames and glass balustrade bases alike.

Mastic can only go onto a dry, clean joint, so window work in Flaunden is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.

The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.

Applicator reaching up to seal an external door frame on a sunny day
Place
Flaunden (HP3)
Wider area
Hertfordshire
Guarantee
A year, on every job
Quotes
A clear quote up front
Call
0345 464 0079
Page updated
26 October 2026

Common problems we fix in Flaunden

The wrong sealant is a common cause. Some products do not bond well to glass, and acetoxy types can attack some frame materials.

Signs it’s time to call us include:

  • Water running down inside the glass
  • A quick top-up bead that didn’t last
  • Glass-to-glass joints that have split
  • Water getting into a conservatory at the joints

For site and facilities teams at buildings such as St Clement Danes School, the mastic around its windows and doors needs looking after like any other building’s.

Comparing quotes

  • Which sealant they’ll use, and why
  • What guarantee comes with the work
  • Who turns up on the day
  • Whether you can choose the colour

10 questions to ask before you book

What happens if it’s left?

A leaking joint won’t fix itself. Water can damage frames, walls, flooring and furniture, so it pays to deal with it early. Around Flaunden, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.

Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.

Why book with us

  • Colour agreed with you before we start
  • Anti-fungal sanitary silicone in wet areas
  • More than 20 years in sealant work
  • Fully insured

Take a look at what affects the cost and what customers say.

What the job involves on each surface

Glass-to-glass joints

These joints are on show, so a straight, even finish matters.

Rooflights

Rooflight leaks can come from the sealant or the roof. We check which it is.

Flaunden homes and the weather

With historic houses such as Chenies Manor House (about 1.6 miles south) nearby, there’s older building stock in the area around Flaunden as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

Homes close to Church of St Mary Magdalene (Church of England) include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Chalfont & Latimer station? Then leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.

Flaunden is about 3 miles north-east of Amersham, in Hertfordshire. We carry out glazing silicone for homes and businesses in Flaunden and the surrounding area, as part of our work across Hertfordshire. Flaunden is one of 381 towns and villages in Hertfordshire we cover for glazing silicone. For nearby work, see our London page, about 23 miles away.

Work in HP3 is quoted and booked the same way as anywhere else. If you are just outside Flaunden, we cover Belsize (1 mile east), Chenies (1 mile south), Latimer (2 miles south-west), Little Chalfont (3 miles south-west) and Chorleywood (3 miles south). Further out, we also cover Watford (6 miles south-east), Hemel Hempstead (5 miles north-east), St Albans (9 miles north-east), Harpenden (11 miles north-east), Hatfield (14 miles east) and Borehamwood (11 miles east).

Local landmarks in Flaunden

Typical jobs here are in homes near The Green Dragon pub and the streets around them. The nearest railway station is Chalfont & Latimer station, about 2.4 miles south-west. Other landmarks nearby include Amersham Fair Organ Museum (3.1 miles south-west) and Hemel Hempstead Hospital (4.5 miles north-east). For a walk, there’s Sarratt Bottom nature reserve.

Map of Flaunden © OpenStreetMap contributors

What affects the quote in Flaunden

For a quick quote, just ask. The main things that affect it are:

  • The amount of work
  • Access and height
  • Whether there’s mould to deal with
  • Whether old sealant or filler has to be cut out

A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.

What to tell us for a quote

When you contact us, it’s useful to know:

  • How we’d reach the joints
  • Whether it’s a home or a business
  • The rough size of the job
  • If someone has resealed it before

Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand.

Honest limits

New sealant cannot fix everything, and we’d rather say so up front. Sealant won’t put right:

  • A broken pane or roof panel
  • Water coming through the roof rather than a sealant joint
  • Structural problems with a conservatory roof

If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.

Surfaces we seal

  • Rooflights
  • Conservatory frames
  • Shower screens
  • Glass-to-glass joints
  • Glass balustrade bases
  • Glass-to-frame joints

The process

When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from an hour or two to most of a day, depending on the size of the job. Somewhere like Flaunden needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.

  1. We find where water is getting in and check whether it’s a sealant joint.
  2. Old silicone is cut away from the glass and frame without scratching either.
  3. The glass and frame are cleaned and degreased.
  4. New glazing silicone goes in and is tooled to a neat finish.
  5. We look over every joint and, where we can, test it with water.

How to prepare

  • Let us know about stairs, lifts or work at height
  • Move anything stored near the joints
  • Keep pets and children clear of the area while we work

Get a quote

For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved and send you a clear quote.

Get a quick quote

Advice

Flaunden: your questions answered

Will you come out to Flaunden?

Yes, Flaunden is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.

Can you help a landlord with a rental near Chalfont & Latimer station?

Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.

Is it possible to redo the silicone on a shower screen?

Yes. We remove the old sealant and reseal the wall and tray joints.

Are you insured?

Yes. We’re fully insured, with over 20 years’ experience in sealant work.

Where is Mr Mastic based?

Mr Mastic is based in Crawley. We cover Flaunden and the rest of Hertfordshire, along with the rest of our area.

How long before the joint can be used?

Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used before we leave.

Are you ARBOMaster approved?

Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.

Can a conservatory leak be sealed?

Yes, when the leak is a failed sealant joint. If the cause is the roof, a panel or a unit, we will say so.

Landlords, agents and businesses in Flaunden

For anyone letting property in or around Flaunden, several properties can be quoted together. Send us the addresses and the work at each.

We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job