West Sussex · England
Sand mastic for sash & case windows in West Green, West Sussex
Specialist sand mastic for West Green: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Crumbling sand mastic round a window
- A silicone bead on a sash window that spoils the look
- Failed mastic on an exposed elevation
Sand mastic in West Green
On many period windows, sand mastic looks right and suits the building. Newer frames normally get a flexible sealant instead, and we will talk through which suits your home. We work on stone surrounds, timber door frames and period & listed homes, and people most often call us about draughty sash windows at the surround and mastic worn away on windows facing the weather.
Homes around West Green range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
You’re covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Where
- West Green (RH11, RH10)
- Region
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work can’t fix
We’d rather tell you now than do work that will not last, so these are the limits:
- Broken panes
- Decayed frames that need repair
- Decisions on consent for listed homes
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Where we work in West Green
- Period & listed homes
- Tenement windows
- Sash and case windows
- Timber door frames
- Brick reveals
- Stone surrounds
Nearby places to West Green
What else we do in West Green
Why it’s worth doing now in West Green
Not every filler suits an old window surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. Homes in smaller places like West Green can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
What you get with us
- Old sealant always removed completely
- Trusted Arbo and Everbuild sealants
- 20+ years of sealant experience
- Tidy, careful work
Read our cost guide or customer reviews.
What affects the quote in West Green
We don’t publish a price list, because jobs vary so much. The quote depends on:
- Any mould that needs treating
- The number of rooms or windows
- The size of the job
- Which sealant suits the joint
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Helping us quote
To help us quote quickly, please include:
- The type of property
- Access, such as stairs, a lift or height
- If someone has resealed it before
- The problem you’ve noticed
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What we do, step by step
The work is kept neat and contained to the area we’re working on, so you can carry on as normal. The job generally takes anything from a few hours to a full day, depending on how many windows, and we explain the cure time before we leave. A visit to West Green is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Keep pets and children clear of the area while we work
Get a quote
For sand mastic in West Green, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Related advice
Common questions in West Green
Do you work for landlords with property near Crawley station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Is it worth replacing old sealant in an older home in West Green?
If it hasn’t been replaced for some years, it’s usually worth it. Sealant doesn’t last for ever, and its life depends on use, cleaning and weather, and many homes in West Green may already be on their second or third set.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can you replace silicone on a period window with sand mastic?
Yes. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Keep sills and gutters clear so water drains away
- Go gently near the mastic when preparing windows
- Plan mastic work ahead of painting
- Check with your local planning authority if your home is listed
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
Windows and doors in West Green
Crawley, which West Green is part of, is one of England’s post-war new towns. With many homes from the post-war decades, replacement windows and doors are common. The mastic around replacement frames ages too, and gaps at sills and frame heads are where water gets in. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Crawley station, any sash windows need sound mastic to keep draughts and rain out. If you live in an older home near Voice of Deliverance Full Gospel Church of God, the joint between an old wall and a newer frame is usually the first place rain gets in. For site and facilities teams at buildings such as West Green Primary School, the mastic around its windows and doors needs looking after like any other building’s.
West Green is about 1 mile north of Crawley, in West Sussex. For sand mastic in and around West Green, please phone 0345 464 0079 or email us for a quick quote. We cover West Sussex from our Crawley base. Our area takes in 371 places across West Sussex.
All of RH11 and RH10 is within our area for sand mastic, from the main roads to the quietest streets. We cover properties on Bank Lane, Swift Lane and Raven Lane and the roads around them. Close by, we work in Langley Green (1 mile north), Crawley (1 mile south), Southgate (1 mile south), Three Bridges (1 mile east) and Tilgate (1 mile south-east). We also work in nearby towns such as Horsham (7 miles south-west), Haywards Heath (10 miles south-east), Burgess Hill (12 miles south), East Grinstead (8 miles east), Billingshurst (13 miles south-west) and Roffey (6 miles south-west).
Landmarks near West Green
Locally, jobs take us to homes and businesses close to Ifield Community College, Grattons Park and Dr Samuel Johnson pub. The closest station to West Green is Crawley station, about 0.8 miles south. A little further out are Crawley Museum (less than half a mile south) and Crawley Hospital (0.5 miles south-west). Not far away are Tilgate Lake.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.