East Sussex · England
Sand Mastic in Uckfield
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Uckfield, backed by a 12-month guarantee. Call for a quick quote.
- Gaps round a timber door in stone or brick
- Mastic dropping out of the joint
- Patchy fillers round a sash window
How we handle sand mastic in Uckfield
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it and tidies the surround. Typical jobs include failed mastic on an exposed elevation and crumbling sand mastic round a window, across timber door frames, stone surrounds and brick reveals.
Walls in Uckfield that face the prevailing wind take the most weather, and that is generally where the sealant gives up first. It’s worth looking at every frame, not just the one that leaks.
The work is covered for a year after we finish. If anything is not right with it, phone 0345 464 0079 or drop us an email.
- Place
- Uckfield (TN22)
- Wider area
- East Sussex
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. Sand mastic is shaped by hand to suit.
What else we do in Uckfield
Uckfield questions
Is sand mastic in Uckfield guaranteed?
All our work, in Uckfield and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Can you help a landlord with a rental near Uckfield station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Is consent needed for window work on a listed home?
Checking first is sensible. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Do you work in Uckfield?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint.
How long does sand mastic take to harden?
The surface skins quite quickly, then hardens over a longer period. Timing depends on the weather and the joint.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours per window, depending on the condition of the joints, including the tidy-up. In Uckfield, parking is rarely complicated, though it helps to know about driveways or restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
Get a quote
Every job is quoted individually. Simply call 0345 464 0079 or send us an email and describe the job and send photos if you have them.
Advice
Quotes for sand mastic in Uckfield
Call for a quick quote. The main things that affect it are:
- Mould in or behind the old joints
- Access and height
- How many areas need sealing
- When we can work, for business premises
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Helping us quote
To make quoting easier, please include:
- Roughly how big the job is
- The type of property
- What’s wrong with the joints now
- Pictures of the joints, sent by email
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Landlords, agents and businesses in Uckfield
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What sand mastic looks like in Uckfield
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.
For an older house near a landmark such as St Saviour, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For landlords with property near Uckfield station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For site and facilities teams at buildings such as St Philip's Catholic Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Uckfield is about 9 miles east of Haywards Heath, in East Sussex. For sand mastic in and around Uckfield, please phone 0345 464 0079 or drop us an email for a quick quote. We cover East Sussex from our Crawley base. Uckfield is one of 289 places in East Sussex we cover for sand mastic. There’s also a page for Brighton, roughly 14 miles from Uckfield.
Postcode districts we cover here for sand mastic: TN22. We cover properties on High Street, London Road and Keld Avenue. Uckfield sits on or near the A22 and B2102. We also cover the places around Uckfield: Framfield (1 mile east), Cooper's Green (2 miles north), Potter's Green (2 miles north-east), Etchingwood (2 miles north-east) and Buxted (2 miles north-east). Within a short drive, we also cover Eastbourne (15 miles south-east), Seaford (13 miles south), Lewes (8 miles south-west), Hailsham (10 miles south-east), Crowborough (6 miles north-east) and Newhaven (12 miles south). Being one of East Sussex’s larger places, Uckfield has homes, rented property and businesses of every kind.
Landmarks near Uckfield
Locally, jobs take us to homes and businesses close to The Alma Arms, Hempstead Meadow and Uckfield College. There’s a railway station in Uckfield itself: Uckfield station. Nearby you’ll also find Uckfield Community Hospital (less than half a mile south-east) and Tickerage Castle (2.1 miles east). Green spaces nearby include Brickfield Meadow.
Keeping the joints in good condition
So the new joints stay in good condition:
- Ask the planning authority about consent for listed or conservation-area homes
- Take care around the mastic when scraping paint
- Look over the window mastic once a year
- Sort the mastic before the decorators arrive
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Leave it or put it right?
New mastic over crumbling mastic will not hold. Raking out and preparing the joint gives it a sound base so the new mastic stays put. In Uckfield, as anywhere, most leaks start as a small gap in a joint, and they’re far easier to fix early.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
What you get with us
- Full insurance on every job
- Every job guaranteed for a year
- Old sealant always removed completely
- Over 20 years’ experience
Take a look at what affects the cost and customer reviews.