Kent · England
Aycliffe Sand Mastic
Our applicators work in Aycliffe on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Weathered mastic on the most exposed windows
- Old cement repairs round a window that have failed
How we handle sand mastic in Aycliffe
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we’ll explain which is best for yours. If you have weathered mastic on the most exposed windows and wind and rain getting in round a sash window, we can help, whatever the surface.
Mastic can only go onto a dry, clean joint, so window work in Aycliffe is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
A one-year guarantee comes as standard, so you are covered after we have gone.
- Where
- Aycliffe (CT17, CT15)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Check with your local planning authority if your home is listed
- Do not paint over the new mastic
- Inspect the joints round the windows every year or so
- Keep modern sealant off the mastic
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
How the job changes by surface
Sash and case windows
A sash window’s box frame sits in the masonry opening. Sand mastic seals the joint round it.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
What sealant work can’t fix
In fairness, there are a few things sealant won’t fix:
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
- Decayed frames that need repair
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Surfaces we seal
- Brick reveals
- Stone surrounds
- Tenement windows
- Period & listed homes
- Timber door frames
- Sash and case windows
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We work for landlords and letting agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
When to call us in Aycliffe
Timber frames move with the seasons. The movement cracks the mastic little by little.
If you can see any of these, it’s time to have the joints looked at:
- Silicone on a period window that looks wrong
- Gaps where the frame meets the masonry
- Mastic dropping out of the joint
- Mastic that needs renewing before redecorating
If you look after a building such as Aycliffe Community Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before you book
- What product goes in the joint
- What the quote includes, VAT included or not
- What happens if they find a problem under the old sealant
- How much experience the applicator has
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
How it works
At the end, we look at the finished work together. The visit itself normally takes a few hours per window, depending on the condition of the joints, depending on the size of the job. In a small place like Aycliffe, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
- Keep pets and children clear of the area while we work
Ask for a quote
Getting a quote is simple: tell us what needs doing and where. A few pictures by email make the job easier to understand, and we will take it from there.
Related advice
Frames and glazing around Aycliffe
Aycliffe 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Aycliffe Church Centre, the joint between an old wall and a newer frame is normally the first place rain gets in. For landlords with property near Dover Priory station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Aycliffe is about 1 mile south of Tower Hamlets, in Kent. Every kind of property in Aycliffe can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. We cover 922 towns and villages across Kent, large and small. Our Chelmsford page covers work nearby, about 55 miles away.
Jobs for sand mastic in CT17 and CT15 works the same way as everywhere else we cover. We cover properties on Manor Road, Mount Road and Rugby Road. We also cover the places around Aycliffe: Maxton (1 mile north), Farthingloe (1 mile north-west), Church Hougham (2 miles west), Dover (2 miles north) and River (2 miles north). Larger places within reach include Canterbury (15 miles north-west), Folkestone (6 miles west), Deal (8 miles north-east), Hythe (10 miles west), Walmer (8 miles north-east) and Hawkinge (6 miles west).
Landmarks near Aycliffe
We work in homes and buildings around Crown & Sceptre pub, Western Heights LNR and Astor College for the Arts and the streets around them. The closest station to Aycliffe is Dover Priory station, roughly 1.1 miles north-east. Well-known places in the area include Royal Victoria Hospital (1.3 miles north-east) and Old Town Gaol (1.3 miles north-east). For a walk, there’s Dover Western Heights.
Your questions about sand mastic in Aycliffe
Do you cover smaller places like Aycliffe?
Yes, Aycliffe is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is sand mastic in a coastal place like Aycliffe any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Is consent needed for window work on a listed home?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
How long will you be here?
Most jobs take a few hours per window, depending on the condition of the joints, including preparation and clearing up. Your quote will say how long we expect yours to take.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Which is right for my windows, sand mastic or modern sealant?
We will help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
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’ll advise.