West Sussex · England
Sand Mastic in Three Bridges
Sand mastic in Three Bridges from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps between timber frames and stone or brick
- Wind and rain getting in round a sash window
- Window mastic to renew ahead of painting
What sand mastic looks like in Three Bridges
Historic houses like Gravetye Manor (about 4.9 miles south-east) are a reminder that the area around Three Bridges 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. 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.
Letting a property close to Three Bridges station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. Schools such as Pound Hill Junior School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Three Bridges is about 1 mile east of Crawley, in West Sussex. Wherever you are in the RH10 postcode area, we cover sand mastic for homes and businesses. 371 places in West Sussex are on our list, large and small.
All of RH10 is within our area for sand mastic, from the main roads to the quietest streets. If you need sand mastic at a property on Ash Road, Mill Road and North Road or anywhere close by, we can help. Neighbouring places we cover for sand mastic include Pound Hill (1 mile north-east), Worth (1 mile south-east), Maidenbower (1 mile south-east), Tilgate (1 mile south-west) and Crawley (1 mile west). Further out, we also cover Horsham (8 miles south-west), Haywards Heath (9 miles south), Burgess Hill (11 miles south), East Grinstead (7 miles east), Billingshurst (14 miles south-west) and Bewbush (3 miles west).
What’s near Three Bridges
Typical jobs here are in homes near Hazelwick School, Central Sussex College and Grattons Park. There’s a railway station in Three Bridges itself: Three Bridges station. Other landmarks nearby include Crawley Hospital (1.6 miles west) and Crawley Museum (1.2 miles west). Not far away are Tilgate Lake.
Sand mastic in Three Bridges, done properly
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. Typical jobs include cracked mastic round a front door frame and cement or filler used on old window joints that has cracked, across tenement windows, stone surrounds and timber door frames.
Houses in smaller places like Three Bridges can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. That’s hard on the mastic around frames and sills.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Three Bridges (RH10)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Three Bridges
Water gets into small cracks in the mastic and loosens it further. Windows facing the weather tend to go first.
It’s worth asking for a quote if you see:
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
- A silicone bead on a sash window that spoils the look
If you live in an older home near St Barnabas', replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- What happens if the job turns out different
- Whether the sealant suits the joint
- What the cure time is
- What preparation is included
Different surfaces, different methods
Period and listed homes
A traditional finish suits a period property, and sand mastic is one of them.
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Leave it or put it right?
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Around Three Bridges, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Call for a quick quote and we’ll go through it with you.
What you get with us
- Trusted Arbo and Everbuild sealants
- An ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
- Rated 4.9 stars on Google
How we quote for sand mastic
Call for a quick quote. What matters most is:
- How many areas need sealing
- The size of the job
- The product the joint needs
- When we can work, for business premises
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Asking for a quote
Photos by email are helpful but not essential. Try to tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
- Photos by email, if that is easy
- How we’d reach the joints
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and give you a clear price before any work starts.
Also near Three Bridges
What else we do in Three Bridges
For landlords and businesses
For anyone letting property in or around Three Bridges, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Keep modern sealant off the mastic
- Avoid heavy scraping on the mastic joint
- Look over the window mastic once a year
- Ask us before painting near the mastic
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
Three Bridges: your questions answered
Should the sealant in an older Three Bridges home be renewed?
Often, yes: cracked, shrunken or mouldy sealant has done its job. The key is cutting all the old sealant out, as new sealant won’t bond to it.
Can you help a landlord with a rental near Three Bridges station?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. You can call 0345 464 0079 or email us with the details for a clear quote.
Is consent needed for window work on a listed home?
Checking first is sensible. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Do you work in Three Bridges?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland, and that includes Three Bridges.
What guarantee comes with the work?
All our work has a one-year guarantee, and we’re fully insured.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or email us.
Is it possible to take out silicone and use sand mastic instead?
Generally, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Can I choose the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in.
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours for a single window, longer for several. For a job in Three Bridges, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as 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.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or send us an email.