West Sussex · England
Rudgwick Sand Mastic
We cover Rudgwick for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Gaps where the frame meets the masonry
- Crumbling sand mastic round a window
- Draughts and rain around sash boxes
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Inspect the joints round the windows every year or so
- Make sure water runs off the sill
- Avoid heavy scraping on the mastic joint
- Find out about consent before window work on a listed home
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Sand mastic in Rudgwick, done properly
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, tenement windows and timber door frames, and people most often call us about tired mastic found when preparing windows for paint and weathered mastic on the most exposed windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Rudgwick is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Whatever the size of the job, you get the same one-year guarantee in Rudgwick and across West Sussex.
- Place
- Rudgwick (RH12)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Rudgwick
Other services in Rudgwick
Signs you need sand mastic in Rudgwick
Timber swells and shrinks with the weather. The movement cracks the mastic over time.
If you can see any of these, it’s time to have the joints looked at:
- Failed mastic on an exposed elevation
- Window mastic to renew ahead of painting
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
If you let a flat or house near Christs Hospital station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Questions to ask before booking
- Whether they’re fully insured
- What preparation is included
- Whether VAT is included
- Which sealant they’ll use, and why
DIY sealant or a professional job?
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.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What we do, step by step
Once we’re on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Rudgwick, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check the window surrounds and agree which joints need renewing.
- 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.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
- Move anything stored near the joints
Getting a quote
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job.
Advice
Questions from Rudgwick
Do you cover Rudgwick for sand mastic?
Yes. Our work covers London and the South East, and Rudgwick is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
I let a flat near Christs Hospital station. Can you help?
Yes. We work for landlords and letting agents as well as householders. You can call 0345 464 0079 or email us with the details for a clear quote.
Is it possible to take out silicone and use sand mastic instead?
Often, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and shaped to suit the surround.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
What affects the quote in Rudgwick
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many rooms, windows or areas are involved
- The type of sealant required
- Mould in or behind the old joints
- The number and length of the joints
The cost depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
What to tell us for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- The address or postcode of the job
- Whether it has been sealed before
- The type of property
- Access, such as stairs, a lift or height
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Why act early in Rudgwick
If you’re redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. In a small place like Rudgwick, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What you get with us
- Full insurance on every job
- 4.9 on Google from 180+ five-star reviews
- We never seal over old sealant
- Every job guaranteed for a year
Read our cost guide and our reviews.
When it is not the sealant
We’ll always be straight with you, so here’s what sealant cannot fix:
- Damaged stone surrounds
- Decayed frames that need repair
- Whether work needs listed building consent
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before booking.
What we seal
- Sash and case windows
- Stone surrounds
- Timber door frames
- Tenement windows
- Period & listed homes
- Brick reveals
Sand mastic in Rudgwick: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like Rudgwick Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Holy Trinity Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Rudgwick is about 6 miles west of Horsham, in West Sussex. We provide sand mastic to homes and businesses in Rudgwick and nearby, as part of our work across West Sussex. Across West Sussex, we cover 371 places, Rudgwick among them. Our Crawley page covers work nearby.
Work in RH12 is quoted and booked the same way as anywhere else. Sand mastic is available to properties on Station Road, Thurne Way and Jubilee Road. Other places close to Rudgwick include Bucks Green (1 mile south-west), Tisman's Common (1 mile west), The Haven (2 miles south), Slinfold (2 miles south-east) and Five Oaks (3 miles south). We also work in nearby towns such as Crawley (11 miles east), Horsham (6 miles east), Broadfield (10 miles east), Storrington (12 miles south), Billingshurst (5 miles south) and Bewbush (10 miles east).
Around Rudgwick
Locally, jobs take us to homes and businesses close to Pennthorpe School and The Queen's Head Public House. The closest station to Rudgwick is Christs Hospital station, about 4.6 miles south-east of the centre. A little further out are Horsham Hospital (5.6 miles east).