East Sussex · England
Sand mastic for sash & case windows in Pett, East Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Pett, backed by a one-year guarantee. Call for a quick quote.
- Modern sealant on a period surround
- Cracked mastic round a front door frame
- Wind and rain getting in round a sash window
How the job changes by surface
Stone surrounds
Old stone surrounds are often uneven, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Sand mastic in Pett
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. If you are dealing with crumbling sand mastic round a window and gaps between timber frames and stone or brick, we can put it right, whatever the surface.
Around Pett, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Pett (TN35)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Pett: your questions answered
Do you work for landlords with property near Three Oaks station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Will you come out to Pett?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it possible to take out silicone and use sand mastic instead?
Generally, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
How long will you be here?
That depends on how much there is to do, but as a guide it takes a few hours for a single window, longer for several. We will give you a better idea when we quote.
Should I use sand mastic or silicone?
It depends on the window. Period windows in stone or brick usually suit sand mastic and newer frames generally get a flexible sealant.
Can you match the sealant colour?
Generally, yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
What guarantee comes with the work?
Our one-year guarantee covers every job, sand mastic included.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Clear gutters so water doesn’t pour onto the windows
- Do not paint over the new mastic
- Keep modern sealant off the mastic
- Get any rot dealt with first
Don’t run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
An open joint round the box lets weather through. Left, the gap tends to get bigger.
Why it’s worth doing now in Pett
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. Around Pett, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What you get with us
- Anti-fungal sanitary silicone in wet areas
- Approved under the ARBOMaster scheme
- Old sealant always removed completely
- We are fully insured
Sand mastic in Pett: local notes
Pett is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. 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.
Rented homes near Three Oaks station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Pett is about 5 miles east of Hastings, in East Sussex. From the centre of Pett to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Pett is one of 289 places in East Sussex where we work. For nearby work, see our Brighton page (35 miles or so).
All of TN35 is covered for sand mastic. You’ll find streets such as Elms Lane, Pett Road and Chick Hill, all of which we cover. Neighbouring places we cover for sand mastic include Fairlight Cove (1 mile south), Friar's Hill (1 mile west), Guestling Green (2 miles west), Fairlight (2 miles south-west) and Guestling (2 miles west). Larger places within reach include Hastings (5 miles west), Bexhill-on-Sea (9 miles west), St Leonards (6 miles south-west), Hastings Old Town (4 miles south-west), Belmont (4 miles south-west) and Hollington (5 miles west).
Around Pett
In Pett, that means homes and buildings near The Royal Oak Inn, among other places. For rail, the closest station is Three Oaks station, roughly 2.5 miles west. Nearby you will also find Conquest Hospital (4.5 miles west) and Winchelsea Court Hall Museum (2.7 miles north-east). Not far away are Rye Harbour Nature Reserve.
Nearby places to Pett
Other services in Pett
When it isn’t the sealant
New sealant can’t fix everything, and we will tell you before any work starts. It won’t solve:
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
- Masonry that needs repairing
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Timber door frames
- Tenement windows
- Sash and case windows
- Period & listed homes
- Brick reveals
- Stone surrounds
What affects the quote in Pett
Your quote is based on your job. We take into account:
- Which sealant suits the joint
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- Access and height
What it costs depends on how much there is to do, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Any previous sealing or DIY work
- Roughly how big the job is
- Photos by email, if that is easy
- The problem you’ve noticed
For sand mastic in Pett, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
The process
All our tools and materials come with us in the van. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for a single window, longer for several. Somewhere like Pett needs a little journey planning: 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.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and give you a clear quote before we start.
Related advice
When to call us in Pett
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
If you can see any of these, it’s time to have the joints looked at:
- Gaps round a timber door in stone or brick
- A silicone bead on a sash window that spoils the look
- Failed mastic on an exposed elevation
- Mastic that needs renewing before redecorating
If you live in an older home near St Mary & St Peter, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before booking anyone
- When the joint can take water or movement
- What preparation is included
- What happens if the job turns out different
- Is VAT in the price?