Essex · England
Sand mastic for sash & case windows in Lower Green, Essex
Sand mastic across Lower Green and nearby, with old sealant always removed completely.
- Wind and rain getting in round a sash window
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Sand mastic in Lower Green
Sand mastic doesn’t last for ever and gaps open up round the frame. We rake it out and renew it and tidies the surround. If you are dealing with draughts and rain around sash boxes and modern sealant on a period surround, we can help.
Outdoor sealant needs dry, clean surfaces, so work on frames around Lower Green is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Lower Green (CB11)
- Region
- Essex
- Cover
- One year on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Also near Lower Green
Also in Lower Green
Windows and doors in Lower Green
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.
In the older streets around Church of St John the Evangelist, the joint between an old wall and a newer frame is usually the first place rain gets in. In and around Lower Green, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Lower Green is in Essex. From the centre of Lower Green to the outskirts, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 644 places across Essex, from the larger towns to small villages. There’s also a page for Chelmsford, about 24 miles away.
Jobs for sand mastic in CB11 is quoted and booked the same way as anywhere else. Sand mastic is available to properties on Park Lane and Waterwick Hill and the roads around them. Neighbouring places we cover for sand mastic include Anstey (2 miles south-west), Brent Pelham (2 miles south), Daw's End (2 miles south-west), Great Hormead (4 miles south-west) and Furneux Pelham (4 miles south). We also work in nearby towns such as Harlow (15 miles south), Saffron Walden (7 miles east), Great Dunmow (14 miles south-east), Stansted Mountfitchet (8 miles south-east), Newhall (15 miles south) and Elsenham (8 miles south-east).
Near you in Lower Green
A little further out are The Warren (1 mile west).
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a single window, longer for several, and the area is left clean. Somewhere as small as Lower Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Tell us about any water getting in
- For business premises, tell us about site rules or sign-in
- Mention any tricky access
Ask for a quote
For sand mastic in Lower Green, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
When it is not the sealant
To be straight with you, some problems need a different trade:
- Sashes that need overhauling
- Whether work needs listed building consent
- Broken panes
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think.
Where we work in Lower Green
- Stone surrounds
- Tenement windows
- Sash and case windows
- Timber door frames
- Brick reveals
- Period & listed homes
Why act early in Lower Green
Filling over old, loose mastic does not last. Raking out and preparing the joint gives it a sound base so the new work lasts. Around Lower Green, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why Lower Green customers choose us
- Fully insured
- Tidy, careful work
- ARBOMaster approved applicator
- 180+ five-star Google reviews
Take a look at how sealant jobs are priced or what customers say.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Keep modern sealant off the mastic
- Go gently near the mastic when preparing windows
- Get any rot dealt with first
- Inspect the joints round the windows every year or so
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.
Questions from Lower Green
What guarantee comes with sand mastic in Lower Green?
All our work, in Lower Green and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is Lower Green in your area for sand mastic?
Yes, Lower Green is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Is sand mastic better than silicone for my windows?
That depends on your windows. Period windows in stone or brick usually suit sand mastic, while modern frames normally get a flexible sealant.
How long will you be here?
That depends on the amount of work, but as a guide it takes a few hours per window, depending on the condition of the joints. We will tell you when we quote.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
Will there be a smell?
Some sealants have a smell while they cure. Ventilation helps.
Quotes for sand mastic in Lower Green
We quote each job individually. This is what makes a difference:
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- Whether there’s mould to deal with
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
To help us quote quickly, please include:
- How many joints, rooms or windows are involved
- Photos by email, if that’s easy
- The problem you’ve noticed
- Access, such as stairs, a lift or height
Getting a quote is simple: let us know the job and the location. A few pictures by email make the job easier to understand, and we will take it from there.