Greater London · England
Crews Hill Window Mastic
Window mastic in Crews Hill from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints at the ends of sills
- Sealant in the wrong colour for the frame
- Gaps between the frame and the inside reveal
What affects the quote in Crews Hill
The quote reflects the job in front of us. We take into account:
- How much old sealant there is and how hard it is to remove
- The product the joint needs
- Whether there’s mould to deal with
- When we can work, for business premises
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Photos by email, if that’s easy
- Whether it has been sealed before
- Whether it’s a home or a business
- How we’d reach the joints
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 0345 464 0079 or email us.
How we handle window mastic in Crews Hill
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through. Where the air is getting in through the window itself, we will say so. We work on composite doors, aluminium frames and uPVC windows, and the jobs we see most are damp patches on the reveal after heavy rain and draughty joints inside around the window.
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.
There’s a 12-month guarantee on every job, large or small.
- Place
- Crews Hill (EN2)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Crews Hill homes and the weather
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Forty Hall (about 1.5 miles south-east) nearby, there’s older building stock in the area around Crews Hill 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.
If you let a flat or house near Crews Hill station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. As a London address, Crews Hill can be tricky for parking: let us know about parking bays, permits or a driveway.
Crews Hill is about 3 miles south-west of Cheshunt, in Greater London. Homes, rented property, offices and hotels in Crews Hill is covered for window mastic. The work is guaranteed for a year. We cover 764 towns and villages across Greater London. There’s also a page for London, about 13 miles away.
We cover every part of the EN2 postcode area for window mastic. You will find streets such as Rosewood Drive, Theobalds Park Road and Whitewebbs Road. We also cover the places around Crews Hill: Clay Hill (1 mile south-east), Gordon Hill (1 mile south-east), Bulls Cross (2 miles east), Forty Hill (2 miles south-east) and Enfield Chase (2 miles south). Further out, we also cover London (13 miles south), City of Westminster (12 miles south), Marylebone (11 miles south), Kensington (13 miles south), St Pancras (11 miles south) and Shoreditch (11 miles south).
Around Crews Hill
Locally, jobs take us to homes and businesses close to Chace Community School and The Plough pub. There’s a railway station in Crews Hill itself: Crews Hill station. A little further out are Chase Farm Hospital (1 mile south) and Museum of Enfield (2.3 miles south). Green spaces nearby include Fir and Pond Woods and Bowyer's Water.
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a morning for a couple of windows and a door. In Crews Hill, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
How to prepare
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we are working on
- Let us know about parking restrictions
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or drop us an email.
Read more
How to look after the new joints
A little care helps the new joints last. Our advice:
- Wipe condensation off the frames
- Don’t use solvent cleaners on the joint
- Check the mastic once a year
- Don’t aim a pressure washer at the joints
Keep the new mastic undisturbed while it cures, for as long as we advise. Keep jet washers away from the frames.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Also near Crews Hill
Other services in Crews Hill
Do you need window mastic in Crews Hill?
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, while a joint packed solid cannot stretch. That is what backing rod is for.
People normally contact us after spotting one of these:
- Rain getting in at the frame or under the sill
- Sealant in the wrong colour for the frame
- Cracked sealant at the sill ends
- Cracked or shrunken mastic around the frame
In the older streets around Church of St John the Baptist, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- What happens if they find a problem under the old sealant
- The length of the guarantee
- Are they insured?
- How long to leave it before use
Crews Hill: your questions answered
Can parking be tricky for a visit in Crews Hill?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can you do window mastic in Crews Hill?
Yes, Crews Hill is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Can I paint over the new sealant?
Most silicone can’t be painted. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply ring 0345 464 0079 or email us.
How long does it take to reseal the windows on a house?
That depends on the number of frames, how they’re reached and the state of the old mastic. We’ll tell you how long your job needs when we quote.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Are you fully insured?
Yes, we are fully insured for domestic and commercial work.
Surface by surface
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We will tell you if that is what we find.
Patio & French doors
Door frames take knocks and movement every time the doors are used. The sealant must cope with it.
What we cannot put right
Before booking, it’s worth knowing the limits too:
- Broken hinges, locks or handles
- Rotten timber, which needs a joiner first
- Draughts through the window seals rather than the frame
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
What we seal
- Composite doors
- Timber windows & doors
- Patio & French doors
- Window sills
- Aluminium frames
- uPVC windows