West Sussex · England
Sand mastic for sash & case windows in Burgess Hill, West Sussex
Specialist sand mastic for Burgess Hill: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
- Old cement repairs round a window that have failed
What we do, step by step
At the end, we look at the finished work together. The visit itself normally takes anything from a few hours to a full day, depending on how many windows, depending on how much there is to do. Parking in a town like Burgess Hill is normally straightforward, but tell us if there’s a driveway or any restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we’re working on
- Let us know about stairs, lifts or work at height
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
Related advice
Sand mastic in Burgess Hill
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We are often asked to deal with tired mastic found when preparing windows for paint and gaps where the frame meets the masonry, on period & listed homes, sash and case windows and brick reveals.
Around Burgess Hill, many houses have gained conservatories, French doors or replacement windows over time. Each one adds more joints to look after, and those joints age at different rates. Sills, frame heads and glazing joints are where leaks generally start.
Every job is covered by our 12-month guarantee, wherever you are in West Sussex.
- Location
- Burgess Hill (RH15)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of sand mastic
Call for a quick quote. The main things that affect it are:
- Which sealant suits the joint
- Any working-time requirements on site
- The number and length of the joints
- How many areas need sealing
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
What to tell us when you ask for a quote:
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
- The address or postcode of the job
- Photos by email, if that is easy
Want a quote for sand mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Aftercare tips
To keep the joints looking good and working properly:
- Ask the planning authority about consent for listed or conservation-area homes
- Have rotten timber repaired before new mastic goes in
- Avoid heavy scraping on the mastic joint
- Plan mastic work ahead of painting
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Towns and villages near Burgess Hill
Other services in Burgess Hill
Burgess Hill questions
I let a flat near Burgess Hill station. Can you help?
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 will give you a clear price.
What guarantee comes with sand mastic in Burgess Hill?
All our work, in Burgess Hill and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
Is sand mastic better than silicone for my windows?
We’ll help you decide. Sand mastic suits many period homes and newer frames suit modern sealant.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll talk you through it.
Can I choose the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or drop us an email.
Where do you work from?
We work from Crawley. Our applicators cover Burgess Hill.
Sand mastic in Burgess Hill: local notes
With historic houses such as Ockenden Manor (about 3.4 miles north) nearby, there’s older building stock in the area around Burgess Hill as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like St Wilfrid's Catholic Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Burgess Hill station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Burgess Hill is about 9 miles north of Brighton, in West Sussex. Burgess Hill gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our West Sussex coverage runs to 371 places, and Burgess Hill is one of them. There’s also a page for Brighton, roughly 9 miles from Burgess Hill.
Every address in RH15 is covered for sand mastic, from the main roads to the quietest streets. Sand mastic is available to properties on Church Road, Station Road and Lower Church Road. Burgess Hill is on the A273 and B2036, so it’s easy for us to get to. Neighbouring places we cover for sand mastic include Jacob's Post (1 mile west), World's End (1 mile north-east), Abbotsford (1 mile north-west), Goddards Green (2 miles west) and Hurst Wickham (2 miles south-west). Within a short drive, we also cover Crawley (11 miles north), Horsham (11 miles north-west), Worthing (15 miles south-west), Haywards Heath (3 miles north-east), East Grinstead (13 miles north-east) and Shoreham-by-Sea (10 miles south-west). Burgess Hill is one of the larger places we cover in West Sussex.
What’s near Burgess Hill
Around Burgess Hill, our work takes us to homes and buildings near Burgess Hill Girls, Oakmeeds Community College and The Six Gold Martlets pub and the streets around them. There’s a railway station in Burgess Hill itself: Burgess Hill station. Nearby you will also find Burgess Hill Museum (under half a mile south-west) and Clayton Castle (3.4 miles south). For a walk, there’s Bedelands Farm Nature Reserve and Wolstonbury Hill.
How the job changes by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
What we can’t put right
Before booking, it’s worth knowing the limits:
- Masonry that needs repairing
- Decayed frames that need repair
- Whether work needs listed building consent
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
What we seal
- Sash and case windows
- Stone surrounds
- Tenement windows
- Period & listed homes
- Timber door frames
- Brick reveals
Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Common problems we fix in Burgess Hill
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
The problems people normally mention when they call include:
- Mastic dropping out of the joint
- Mastic that needs renewing before redecorating
- Weathered mastic on the most exposed windows
- Modern sealant on a period surround
In the older streets around St John the Evangelist's Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
What your quote should include
- What happens if the job turns out different
- What the cure time is
- Who turns up on the day
- Whether they’re fully insured