Kent · England
Sand mastic for sash & case windows in Newbury, Kent
Our applicators work in Newbury on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic round period door frames that has failed
- Patchy fillers round a sash window
How we handle sand mastic in Newbury
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. If you are dealing with old sand mastic that has cracked, crumbled or fallen out and cement or filler used on old window joints that has cracked, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Newbury is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
The work is covered for a year after we finish. If anything is not right with it, call 0345 464 0079 or send us an email.
- Where
- Newbury (ME9)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together and explain the cure time. The visit itself usually takes a few hours per window, depending on the condition of the joints, depending on the size of the job. Somewhere as small as Newbury, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- 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.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
- Try not to wet indoor joints just before the visit
Getting a quote
If you’re in Newbury and need sand mastic, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Advice
How we quote for sand mastic
Call for a quick quote. What matters most is:
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
- How much there is to do
- Working hours on commercial sites
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
What to tell us when you ask for a quote:
- A few photos by email, if you can
- Roughly how big the job is
- The address or postcode of the job
- If someone has resealed it before
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Do you need sand mastic in Newbury?
Over the years, sand mastic weathers. It hardens, cracks and starts to come away on the stone or timber.
Any of these means the joints need attention:
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
- Gaps between timber frames and stone or brick
For an older house near a landmark such as Church of St Catherine, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- How the surfaces are prepared before sealing
- Are they insured?
- What the cure time is
- Which colour the sealant will be
Surface by surface
Timber door frames
Doors face weather and wear and the mastic can crack early. It’s renewed by hand.
Period and listed homes
A traditional finish suits a period property.
Landlord and commercial work in Newbury
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
Common questions in Newbury
Do you work for landlords with property near Teynham station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Is Newbury within the area you cover?
Yes. Newbury is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
Is the work guaranteed?
Every job comes with our one-year guarantee, and we’re fully insured.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
When something else is needed
Sealant is not the answer to every problem, and we will tell you before any work starts. Sealant won’t put right:
- Decisions on consent for listed homes
- Damaged stone surrounds
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
What we seal
- Timber door frames
- Tenement windows
- Sash and case windows
- Brick reveals
- Period & listed homes
- Stone surrounds
Newbury homes and the weather
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Belmont House and Gardens (about 4.3 miles south-east) nearby, there’s older building stock in the area around Newbury as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Teynham station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you look after a building such as Rodmersham School, larger buildings have plenty of frames, and the mastic around each one ages.
Newbury is about 3 miles south-east of Sittingbourne, in Kent. Wherever you are in the ME9 postcode area, our applicators can take on sand mastic. Across Kent, we cover 922 places, Newbury among them. For nearby work, see our Chelmsford page (32 miles or so).
Every address in ME9 is covered for sand mastic. We also cover Kingsdown (1 mile south), Dungate (1 mile south-west), Bapchild (1 mile north), Erriottwood (1 mile south-east) and Rodmersham Green (1 mile north-west). Further out, we also cover Maidstone (11 miles west), Ashford (12 miles south), Canterbury (14 miles east), Sittingbourne (3 miles north-west), Whitstable (12 miles east) and Faversham (5 miles east).
Around Newbury
We work in homes and buildings around Cromers Wood and The Sittingbourne School and the streets around them. Newbury’s nearest station is Teynham station, about 2.7 miles north-east. A little further out are Sittingbourne Heritage Museum (2.4 miles north) and Newnham Castle (2.1 miles south-east).
Why act early in Newbury
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Older cottages and farmhouses around Newbury can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email and we will talk you through it.
Why Newbury customers choose us
- 4.9 on Google from 180+ five-star reviews
- 12-month guarantee on every job
- Any old sealant cut out fully, not covered over
- Experience in homes, commercial sites and hotels