West Sussex · England
Sand Mastic in Pound Hill
Specialist sand mastic for Pound Hill: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Failed mastic on an exposed elevation
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
About our sand mastic in Pound Hill
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we will explain which is best for yours. We work on stone surrounds, sash and case windows and brick reveals, and the jobs we see most are cement or filler used on old window joints that has cracked and weathered mastic on the most exposed windows.
Many houses in smaller places like Pound Hill have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
Your job is guaranteed for a year, as with all our work.
- Where
- Pound Hill (RH10)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
Filling over old, loose mastic does not last. We remove the loose material first so the new work lasts. In a smaller place like Pound Hill, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
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’ll know the price before we begin.
What you get with us
- Domestic, commercial and hotel work
- Tidy, careful work
- Approved under the ARBOMaster scheme
- We never seal over old sealant
Read what affects the cost and what customers say.
Common problems we fix in Pound Hill
Paint, silicone or cement used over old mastic causes problems. They don’t suit the joint and we normally remove them.
Look out for these signs:
- Cracked mastic round a front door frame
- Wind and rain getting in round a sash window
- Mastic worn away on windows facing the weather
- Old cement repairs round a window that have failed
For landlords with property near Three Bridges station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- What preparation is included
- How the colour is chosen
- When the joint can take water or movement
- The length of the guarantee
Landlord and commercial work in Pound Hill
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we’re fully insured.
Your questions about sand mastic in Pound Hill
Do older homes in Pound Hill need their sealant replacing?
In most cases, yes, if it hasn’t been done for a while. Sealant is a maintenance item: how long it lasts depends on use, cleaning and exposure.
Do you work for landlords with property near Three Bridges station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
How long will you be here?
A typical job takes a few hours for a single window, longer for several. We will confirm how long when we quote.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we are using and why.
Is there any odour?
There can be a smell while the sealant cures. Opening a window helps.
Are you insured?
Yes. We are fully insured for every job we do.
The process
We keep the work tidy and contained to the area we are working on, so you can get on with your day. The job usually takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. A visit to Pound Hill 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 check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand.
Read more
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Ask us before painting near the mastic
- Avoid heavy scraping on the mastic joint
- Check with your local planning authority if your home is listed
- Make sure water runs off the sill
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Nearby places to Pound Hill
What else we do in Pound Hill
Windows and doors in Pound Hill
Historic houses like Gravetye Manor (about 4.6 miles south-east) are a reminder that the area around Pound Hill has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Pound Hill Infant Academy, its window and door frames need their mastic kept sound, just like a home’s. Homes close to St Barnabas' include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Pound Hill is about 2 miles north-east of Crawley, in West Sussex. From the centre of Pound Hill to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Our West Sussex coverage runs to 371 places, and Pound Hill is one of them.
Every address in RH10 is covered for sand mastic, from the main roads to the quietest streets. We cover properties on Worth Road, Burns Road and Milton Road and the roads around them. If you are just outside Pound Hill, we cover Worth (1 mile south), Three Bridges (1 mile south-west), Forge Wood (1 mile north), Maidenbower (1 mile south) and Copthorne (1 mile north-east). Further out, we also cover Horsham (8 miles south-west), Haywards Heath (9 miles south), Burgess Hill (11 miles south), East Grinstead (6 miles east), Broadfield (3 miles south-west) and Billingshurst (15 miles south-west).
What’s near Pound Hill
Locally, jobs take us to homes and businesses close to Hazelwick School, The Gatwick School and Hillside Inn and the streets around them. The closest station to Pound Hill is Three Bridges station, roughly 0.6 miles south-west. Nearby you’ll also find County Mall (1.7 miles west) and Langley Green Hospital (2 miles west). The countryside around Pound Hill includes Tilgate Lake.
What we can’t put right
We will not take on work that won’t last, so these are the limits:
- Cracked or broken glass
- Masonry that needs repairing
- Decisions on consent for listed homes
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before you book.
Where we work in Pound Hill
- Tenement windows
- Brick reveals
- Period & listed homes
- Timber door frames
- Sash and case windows
- Stone surrounds
What affects the quote in Pound Hill
The quote reflects the job in front of us. We look at:
- When we can work, for business premises
- The type of sealant required
- Whether there’s mould to deal with
- The size of the job
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Pictures of the joints, sent by email
- The problem you’ve noticed
- The rough size of the job
- Any access issues, like height or stairs
Every job is quoted individually, so start by telling us what you need. Simply call 0345 464 0079 or email us and describe the job, and pictures are welcome.