Greater London · England
Glazing & conservatory sealant in Harefield, Greater London
Specialist glazing silicone for Harefield: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Glazing silicone that has cracked or come away
- Drips on the inside of a conservatory window
- Mouldy sealant around glass panels
Glazing silicone for homes and businesses in Harefield
We do not replace glass and a misted double-glazed unit needs a glazier. What we do is the silicone around the glass, which is where many leaks start. We work on shower screens, glass-to-glass joints and glass balustrade bases, and people most often call us about new silicone smeared over old sealant and conservatory leaks at frame and glazing joints. As mastic and silicone sealant specialists, we cover Harefield for glazing silicone and other sealant work.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Harefield (UB9)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 07833 053749
- Page updated
- 26 October 2026
Frames and glazing around Harefield
In a converted house or block, who looks after the windows depends on the lease, so check that before booking. With historic houses such as Ickenham Hall (about 3.4 miles south-east) nearby, there’s older building stock in the area around Harefield 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.
For site and facilities teams at buildings such as Harefield Infant School, the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Denham station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Harefield is about 3 miles south of Rickmansworth, in Greater London. We provide glazing silicone to homes and businesses in Harefield. Our Greater London coverage runs to 786 places, Harefield among them.
Jobs for glazing silicone in UB9 works the same way as everywhere else we cover. Streets in the area include High Street, Vernon Drive and New Park Road. We also cover Hill End (1 mile north), Woodcock Hill (1 mile north-east), Batchworth Heath (2 miles north-east), Batchworth (2 miles north-east) and Mill End (2 miles north). We also work in nearby towns such as City of Westminster (15 miles south-east), Kensington (14 miles south-east), Hampstead (13 miles east), Ruislip (4 miles south-east), Ealing (10 miles south-east) and Hayes (7 miles south-east).
Near you in Harefield
In Harefield, that means homes and buildings near The King's Arms Public House, The Green and The Harefield Academy, among other places. For rail, the closest station is Denham station, roughly 2 miles south. Other landmarks nearby include Chiltern Open Air Museum (3.4 miles north-west) and Harefield Hospital (less than half a mile north-west). Not far away are Dews Farm Sand Pits and Horse Shoe Bay.
Landlords, agents and businesses in Harefield
Housing providers, facilities teams and property managers book us too in Harefield and across Greater London. Several sites can go on one quote, and we’re fully insured.
If you manage several properties in or around Harefield, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Quotes for glazing silicone in Harefield
We don’t publish a price list, because jobs vary so much. The quote depends on:
- The size of the job
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear quote before we start.
What to tell us for a quote
What to tell us when you ask for a quote:
- The problem you’ve noticed
- The rough size of the job
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, ring 07833 053749 or email us.
Why act early in Harefield
Leaks get worse, not better. Water can damage frames, walls, flooring and furniture, so it pays to deal with it early. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Harefield, the repair is bigger than the sealant job would have been.
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What you get with us
- Domestic, commercial and hotel work
- A sealant colour to suit the surroundings
- White, clear, grey or another colour, product permitting
- Anti-fungal silicone where joints get wet
Take a look at how sealant jobs are priced and what customers say.
Harefield questions
Can parking be tricky for a visit in Harefield?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Do you work for landlords with property near Denham station?
Yes, landlords and agents are among the people we work for. Just phone 07833 053749 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Can you just put new silicone over the old?
Topping up is a common cause of leaks. We remove the old silicone, clean the joint and reseal.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
Will resealing stop my conservatory leaking?
Yes, when the leak is a failed sealant joint. If the cause is the roof, a panel or a unit, we’ll say so.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Is a special sealant needed for glass?
Glass needs a sealant made for glazing. Ours is a neutral-cure glazing silicone with anti-fungal products in bathrooms.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
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.
Do you need glazing silicone in Harefield?
Heat and cold make glass and frames move, and they don’t move by the same amount. In time, the sealant splits or pulls away.
Any of these means the joints need attention:
- Stained, discoloured glazing silicone
- Leaks where conservatory glass meets the frame
- Silicone pulling away from the glass
- Failed joints on frameless glass
In the older streets around Harefield Baptist Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
Before booking anyone
- What preparation is included
- How hidden problems are handled
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
Surface by surface
Glass-to-frame joints
Where glass sits in a frame, silicone keeps water out. When it splits, water can get into the frame.
Conservatory frames
Leaks often start where the frame meets the wall. We remove the failed sealant and renew it.
How the visit works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. It normally takes a few hours for most jobs. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Harefield. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, we trace the leak and check it’s coming through a sealant joint.
- Old silicone is cut away from the glass and frame without scratching either.
- Surfaces are cleaned with a solvent suited to glass and the frame.
- New glazing silicone goes in and is tooled to a neat finish.
- We check the joints and, where safe, run water over them.
Getting ready for the visit
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
- Mention any parking rules near the property
Ask for a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To get started, phone 07833 053749 or send us an email.