Kent · England
Sand mastic for sash & case windows in Newington, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Newington, with a one-year guarantee on every job. Call for a quick quote.
- Gaps where the frame meets the masonry
- Window mastic to renew ahead of painting
- Old sand mastic that has cracked, crumbled or fallen out
Newington: your questions answered
Is Newington within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Does living near the coast affect sand mastic in Newington?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do I need permission for sand mastic on a listed building?
Your local planning authority is the one to ask. They’ll tell you if consent is needed.
How do I get a quote for sand mastic in Newington?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Sand mastic in Newington
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. Typical jobs include cement or filler used on old window joints that has cracked and a silicone bead on a sash window that spoils the look, on timber door frames, tenement windows and brick reveals.
Around Newington, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows.
Whatever the size of the job, it’s backed by our one-year guarantee in Newington and across Kent.
- Where
- Newington (ME9)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Newington
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Around Newington, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why Newington customers choose us
- 180+ five-star Google reviews
- Approved under the ARBOMaster scheme
- Old sealant always removed completely
- Tidy, careful work
Nearby places to Newington
What else we do in Newington
What affects the quote in Newington
Some jobs are bigger than they look, and some smaller. The main factors:
- Which sealant suits the joint
- Any mould that needs treating
- Any working-time requirements on site
- The number and length of the joints
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Asking for a quote
What to tell us when you ask for a quote:
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
- What’s wrong with the joints now
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What we do, step by step
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours per window, depending on the condition of the joints. A visit to Newington is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- 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.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Tell us if parking is tricky
- Mention any leaks or damp you’ve noticed
How to get a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Advice
When something else is needed
New sealant can’t fix everything, and we will tell you before work begins. Sealant will not put right:
- Crumbling stone or brickwork round the window
- Planning or listed building consent (your local planning authority decides)
- Timber that has rotted
If in doubt, ring 0345 464 0079 or email us and we will say what we think before you book.
What we seal
- Tenement windows
- Period & listed homes
- Stone surrounds
- Timber door frames
- Sash and case windows
- Brick reveals
Windows and doors in Newington
Newington is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Newington Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Newington station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Newington is about 3 miles west of Sittingbourne, in Kent. For sand mastic in and around Newington, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We cover Kent from our Crawley base, Newington included. Newington is one of 922 towns and villages in Kent we cover for sand mastic. Chelmsford is on our list too, around 28 miles away.
Every address in ME9 is covered for sand mastic, from the main roads to the quietest streets. We cover properties on Station Road, High Street and London Road. Close by, we work in Breach (1 mile north-west), Keycol (1 mile east), Lower Hartlip (1 mile west), Danaway (1 mile south) and Chestnut Street (1 mile south-east). We also work in nearby towns such as Maidstone (8 miles south-west), Sittingbourne (3 miles east), Gravesend (14 miles north-west), Faversham (10 miles east), Northfleet (15 miles west) and Minster (7 miles north-east).
Landmarks near Newington
We work in homes and buildings around The Wheatsheaf pub and Leigh Academy Rainham and the streets around them. Newington has its own railway station: Newington station. Well-known places in the area include Medway Maritime Hospital (5.7 miles west) and Bayford Court (3.4 miles east). The countryside around Newington includes Bishop Saltings.
How the job changes by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Period and listed homes
A traditional finish suits a period property.
What we are called out for in Newington
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
The most common problems we see are:
- Silicone on a period window that looks wrong
- Failed mastic on an exposed elevation
- Old sand mastic that has cracked, crumbled or fallen out
- Patchy fillers round a sash window
Homes close to Church of St Mary include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- What guarantee comes with the work
- Which colour the sealant will be
- Which sealant they’ll use, and why
- What preparation is included