East Sussex · England
Sand Mastic in Friar's Gate
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Friar's Gate and across East Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Silicone on a period window that looks wrong
- Old cement repairs round a window that have failed
- Mastic that needs renewing before redecorating
What we do, step by step
We keep the work tidy and contained to the joints we’re treating. The job usually takes a few hours for a single window, longer for several. In a small place like Friar's Gate, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Move anything stored near the joints
- For indoor joints, keep the area dry beforehand if you can
- Tell us if parking is tricky
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
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How we handle sand mastic in Friar's Gate
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. If you have patchy fillers round a sash window and failed mastic on an exposed elevation, we can help.
Outdoor sealant needs dry, clean surfaces, so work on frames around Friar's Gate is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Friar's Gate (TN6)
- Wider area
- East Sussex
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What the job involves on each surface
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we will confirm access.
Timber door frames
Sand mastic is used round timber door frames too. We renew it the same way as on windows.
Honest limits
New sealant can’t fix everything, and we will tell you before we start. It will not solve:
- Timber that has rotted
- Broken panes
- Masonry that needs repairing
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Period & listed homes
- Sash and case windows
- Brick reveals
- Tenement windows
- Stone surrounds
- Timber door frames
Your questions about sand mastic in Friar's Gate
Is Friar's Gate in your area for sand mastic?
Yes. We work across London and the South East, and Friar's Gate is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Eridge station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we will talk you through it.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Is sand mastic better than silicone for my windows?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant, and we will explain why.
Is consent needed for window work on a listed home?
Checking first is sensible. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
What does sand mastic cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We’ll explain what to expect before we leave.
What sand mastic looks like in Friar's Gate
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. With historic houses such as Bassetts Manor (about 3.6 miles north-west) nearby, there’s older building stock in the area around Friar's Gate as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Schools such as St John's Church of England Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near St John's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Friar's Gate is about 2 miles north-west of Crowborough, in East Sussex. For sand mastic in and around Friar's Gate, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We are based in Crawley and cover East Sussex. Friar's Gate is one of 289 places in East Sussex we cover. Our Crawley page covers work nearby, about 14 miles away.
All of TN6 is within our area for sand mastic, from the main roads to the quietest streets. Close by, we work in Marden's Hill (1 mile south-east), Chuck Hatch (1 mile west), Crowborough (2 miles south-east), Steel Cross (2 miles east) and Mott's Mill (2 miles north-east). Larger places within reach include Lewes (15 miles south-west), Hailsham (15 miles south), Uckfield (7 miles south), South Malling (14 miles south), Heathfield (9 miles south-east) and Southover (15 miles south).
Near you in Friar's Gate
Locally, jobs take us to homes and businesses close to The Half Moon Inn and Beacon Academy. The closest station to Friar's Gate is Eridge station, about 3 miles east of the centre. Well-known places in the area include Bolebroke Castle (3.4 miles north) and Crowborough War Memorial Hospital (1.9 miles south-east). For a walk, there’s Crowborough Country Park.
Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Leave the new mastic unpainted
- Look over the window mastic once a year
- Avoid patching sand mastic with silicone
- Get any rot dealt with first
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
Do you need sand mastic in Friar's Gate?
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Any of these means the joints need attention:
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
- A silicone bead on a sash window that spoils the look
- Mastic dropping out of the joint
Rented homes near Eridge station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- Whether VAT is included
- When the joint can take water or movement
- How long the guarantee is
- Whether they seal over old material or remove it
Nearby places to Friar's Gate
More services for Friar's Gate
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, which can matter on listed and conservation-area homes. Around Friar's Gate, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in Friar's Gate
- Full insurance on every job
- Quality sealants from Arbo and Everbuild
- An ARBOMaster approved applicator
- Over 20 years’ experience