Essex · England
North Weald Bassett Window Mastic
Window mastic in North Weald Bassett from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rushed sealant from a window installation
- Whistling draughts around closed windows
- Gaps where the sill meets the wall
How we handle window mastic in North Weald Bassett
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that can’t move properly, so deep gaps get backing rod first. The sealant then grips the two sides it should. If you have water coming in at the bottom corners of a door and gaps between the frame and the inside reveal, we can help.
Houses in smaller places like North Weald Bassett can stand more in the open than those in a built-up town. The mastic around frames on those walls tends to age faster.
There’s a 12-month guarantee on every job, large or small.
- Location
- North Weald Bassett (CM16)
- Wider area
- Essex
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
The work is kept neat and contained to the area we’re working on. Expect the work to take a morning for a couple of windows and a door, and we tell you how long to leave it before we go. A visit to North Weald Bassett is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Preparing for the visit
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
How to get a quote
Want a quote for window mastic? Please ring 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear price before any work starts.
Related advice
When to call us in North Weald Bassett
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
Any of these means the joints need attention:
- Rain getting in at the frame or under the sill
- Cold air getting in at the frame edge
- Cracked or shrunken mastic around the frame
- Cracked sealant at the sill ends
Managing a site like St Andrew's CofE Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Before booking anyone
- Which colour the sealant will be
- What the quote includes, VAT included or not
- How much experience the applicator has
- How long to leave it before use
Frames and glazing around North Weald Bassett
With historic houses such as Hill Hall (about 3 miles south) nearby, there’s older building stock in the area around North Weald Bassett as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Parish Church of St Andrew, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
North Weald Bassett is about 4 miles south-east of Harlow, in Essex. Whether you are in the middle of North Weald Bassett or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. North Weald Bassett is one of 644 towns and villages in Essex we cover for window mastic. Chelmsford is on our list too, around 14 miles away.
Here we cover the CM16 postcode area for window mastic. You’ll find streets such as Blenheim Square, Elm Gardens and Wheelers Farm Gardens, all of which we cover. Other places close to North Weald Bassett include Thornwood Common (2 miles west), Coopersale (2 miles south-west), Hastingwood (2 miles north), Magdalen Laver (3 miles north) and Foster Street (3 miles north). We also work in nearby towns such as Chelmsford (14 miles east), Harlow (4 miles north-west), Brentwood (9 miles south-east), Billericay (13 miles south-east), Loughton (6 miles south-west) and Waltham Abbey (7 miles west).
What’s near North Weald Bassett
We work in homes and buildings around The Kings Head Public House and Weald Common Flood Meadows. Well-known places in the area include St. Margaret's Hospital (2 miles south-west) and Epping Signalling Museum (2.8 miles south-west). The countryside around North Weald Bassett includes Gernon Bushes.
Landlords, agents and businesses in North Weald Bassett
Landlords and letting agents in North Weald Bassett can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
Leave it or put it right?
Failed mastic isn’t a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. Problems with the glass or gaskets are for a window company, and we will say so. Homes in smaller places like North Weald Bassett can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why book with us
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
- We leave the area clean and tidy
- We’re fully insured
Take a look at how sealant jobs are priced or customer reviews.
Common questions in North Weald Bassett
Can you do window mastic in North Weald Bassett?
Yes. Our work covers London and the South East, and North Weald Bassett is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
What guarantee comes with window mastic in North Weald Bassett?
All our work, in North Weald Bassett and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Will new mastic stop draughts?
Often, yes. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
Can you seal the gap between the frame and the plaster indoors?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Do the sealants smell?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Keep drainage slots and sill grooves clear
- Avoid harsh chemicals near the mastic
- Avoid blasting the frames with a pressure washer
- Check the mastic once a year
Keep the new mastic undisturbed while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
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What sealant work can’t fix
A few problems are outside what sealant work can do:
- Worn gaskets, brush seals or a door that has dropped
- A frame that has rotted at the joint
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Timber windows & doors
- Window sills
- Composite doors
- uPVC windows
- Patio & French doors
- Aluminium frames
What affects the cost of window mastic
Your quote is based on your job. We take into account:
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- Access and height
- Any mould that needs treating
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- Any previous sealing or DIY work
- Where the property is
- Pictures of the joints, sent by email
- What’s wrong with the joints now
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, call 0345 464 0079 or send us an email.