West Sussex · England
Sand mastic for sash & case windows in Maidenbower, West Sussex
Specialist sand mastic for Maidenbower: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
- Tired mastic found when preparing windows for paint
Do you need sand mastic in Maidenbower?
Some old mastic was never deep enough. Mastic that’s too thin cracks and drops out so we make sure the new mastic is the right thickness.
Any of these means the joints need attention:
- Failed mastic on an exposed elevation
- Mastic that needs renewing before redecorating
- Cracked mastic round a front door frame
- Patchy fillers round a sash window
If you live in an older home near St Nicholas' Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before booking anyone
- Whether they’re fully insured
- What happens if the job turns out different
- What preparation is included
- Whether they seal over old material or remove it
How we handle sand mastic in Maidenbower
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap and tidies the surround. We work on timber door frames, brick reveals and sash and case windows, and common reasons people get in touch are tired mastic found when preparing windows for paint and patchy fillers round a sash window.
Around Maidenbower, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
A 12-month guarantee comes as standard, so you are not left on your own once the job is done.

- Where
- Maidenbower (RH10)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. Around Maidenbower, 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.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Why us?
- An ARBOMaster approved applicator
- We never seal over old sealant
- Experience in homes, commercial sites and hotels
- Anti-fungal silicone where joints get wet
Read our cost guide or what customers say.
What affects the quote in Maidenbower
You will get a clear quote before any work starts. It takes into account:
- Whether there’s mould to deal with
- How easy the joints are to reach
- Working hours on commercial sites
- The old material and how stubborn it is
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or email us and we will give you an honest view and a quote.
Asking for a quote
To make quoting easier, please include:
- If someone has resealed it before
- Roughly how big the job is
- Photos by email, if that’s easy
- What’s wrong with the joints now
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or email us.
Nearby places to Maidenbower
What else we do in Maidenbower
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Questions from Maidenbower
Do older homes in Maidenbower need their sealant replacing?
If it hasn’t been replaced for some years, it’s normally worth it. Sealant doesn’t last for ever, and its life depends on use, cleaning and weather, and many homes in Maidenbower may already be on their second or third set.
Do you work for landlords with property near Three Bridges station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Can you do several jobs on one visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
How long does sand mastic take to go off?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Do you have insurance?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
Windows and doors in Maidenbower
With historic houses such as Gravetye Manor (about 4.1 miles east) nearby, there’s older building stock in the area around Maidenbower as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Maidenbower is part of Crawley, one of the post-war new towns. With many homes from the post-war decades, replacement windows and doors are common. That mastic ages as well, and sills and frame heads are where leaks start.
Schools such as Brook Infant School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Three Bridges station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Maidenbower is about 2 miles east of Crawley, in West Sussex. Every kind of property in Maidenbower is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Our West Sussex coverage runs to 371 places, and Maidenbower is one of them.
Postcode districts we cover here for sand mastic: RH10. We cover properties on Holder Road, Palmer Road and Casher Road and the roads around them. Neighbouring places we cover for sand mastic include Worth (1 mile north), Three Bridges (1 mile north-west), Tilgate (1 mile west), Pound Hill (1 mile north) and Crawley (2 miles west). Within a short drive, we also cover Horsham (8 miles west), Haywards Heath (8 miles south), Burgess Hill (10 miles south), East Grinstead (6 miles east), Broadfield (3 miles west) and Billingshurst (14 miles south-west).
Around Maidenbower
We work in homes and buildings around Oriel High School, Tilgate Park and The Charcoal Burner pub, among other places. The nearest railway station is Three Bridges station, roughly 1.1 miles north-west of the centre. Other landmarks nearby include Crawley Museum (2 miles north-west) and Crawley Hospital (2.3 miles north-west). Green spaces nearby include Tilgate Lake.
How the visit works
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes anything from a few hours to a full day, depending on how many windows. In a smaller place like Maidenbower, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
How to prepare
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
How to get a quote
Getting a quote is simple: let us know the job and the location. A few pictures by email make the job easier to understand, and we will take it from there.
Related advice
Surface by surface
Period and listed homes
Period homes look their best with traditional materials.
Timber door frames
Round a period front door, sand mastic gives the right look.
When something else is needed
We’ll always be straight with you, so here’s what sealant can’t fix:
- Timber that has rotted
- Planning or listed building consent (your local planning authority decides)
- Sashes that rattle, stick or won’t open
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Where we work in Maidenbower
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
- Sash and case windows
- Timber door frames
