West Sussex · England
Tilgate Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Tilgate, backed by a one-year guarantee. Call for a quick quote.
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
- Cracked mastic round a front door frame
How we handle sand mastic in Tilgate
Silicone on a period window often looks wrong and is not always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. Typical jobs include window mastic to renew ahead of painting and old sand mastic that has cracked, crumbled or fallen out, across timber door frames, tenement windows and stone surrounds.
In a smaller place like Tilgate, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Tilgate (RH10, RH11)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. Around Tilgate, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why Tilgate customers choose us
- We leave the area clean and tidy
- Fully insured
- An ARBOMaster approved applicator
- Domestic, commercial and hotel work
Read how sealant jobs are priced and customer reviews.
Tilgate questions
Do you cover smaller places like Tilgate?
Yes. Tilgate is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Crawley station?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
What’s sand mastic made of?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
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.
What does sand mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.
Should I check with the council before work on a listed or conservation-area home?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What sealant work cannot fix
In fairness, there are a few things sealant won’t fix:
- Masonry that needs repairing
- Putty and glazing repairs
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Where we work in Tilgate
- Sash and case windows
- Brick reveals
- Tenement windows
- Stone surrounds
- Timber door frames
- Period & listed homes
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
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.
Signs you need sand mastic in Tilgate
Shallow joints are a common cause. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
Signs it’s time to call us include:
- Cracked mastic round a front door frame
- Crumbling sand mastic round a window
- Silicone on a period window that looks wrong
- Failed mastic on an exposed elevation
Schools such as The Oaks Primary School & Nursery are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- Whether VAT is included
- How long the guarantee is
- How the joint is cleaned and prepared
- Whether you can choose the colour
Nearby places to Tilgate
What else we do in Tilgate
Landlord and commercial work in Tilgate
For anyone letting property in or around Tilgate, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
How the visit works
The work is kept neat and contained to the area we are working on. Expect the work to take a few hours per window, depending on the condition of the joints, and we explain the cure time before we leave. For a job in Tilgate, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- Mention any tricky access
- Let us know about parking restrictions
- Let us know if you’ve seen damp or leaks
Get a quote
Want a quote for sand mastic? Please call 0345 464 0079 or drop 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.
Advice
What affects the quote in Tilgate
The price is agreed before any work begins. It takes into account:
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- How many areas need sealing
- The number and length of the joints
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 will explain what it covers.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.
Sand mastic in Tilgate: local notes
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Crawley, which Tilgate 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.
If you let a flat or house near Crawley station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near Holy Trinity, the joint between an old wall and a newer frame is generally the first place rain gets in.
Tilgate is about 1 mile south-east of Crawley, in West Sussex. Our applicators cover sand mastic for householders, landlords and businesses in Tilgate and the surrounding area. Across West Sussex, we cover 371 places, Tilgate among them.
Here we cover the RH10 and RH11 postcode area for sand mastic. Whether your property is on York Road, Nash Road and Cook Road or a nearby road, we can help. Other places close to Tilgate include Southgate (1 mile west), Crawley (1 mile north-west), Three Bridges (1 mile north-east), Maidenbower (1 mile east) and West Green (1 mile north-west). Further out, we also cover Horsham (7 miles south-west), Haywards Heath (8 miles south-east), Burgess Hill (10 miles south), East Grinstead (7 miles east), Billingshurst (13 miles south-west) and Roffey (6 miles west).
Near you in Tilgate
Around Tilgate, our work takes us to homes and buildings near Thomas Bennett Community College, The Grasshopper pub and Tilgate Park and the streets around them. Tilgate’s nearest station is Crawley station, about 0.6 miles north-west of the centre. Other landmarks nearby include County Mall (0.7 miles north-west) and Crawley Hospital (1.2 miles north-west). Green spaces nearby include Tilgate Lake.