Kent · England
Sand mastic for sash & case windows in Hollow Street, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Hollow Street, with a one-year guarantee on every job. Call for a quick quote.
- Old cement repairs round a window that have failed
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
About our sand mastic in Hollow Street
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. Renewing it closes the gap and tidies the surround. Typical jobs include crumbling sand mastic round a window and gaps where the frame meets the masonry, across brick reveals, period & listed homes and stone surrounds.
Mastic can only go onto a dry, clean joint, so window work in Hollow Street is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
All our work comes with our one-year guarantee.
- Location
- Hollow Street (CT3)
- Region
- Kent
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Hollow Street
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.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What happens if it’s left?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. Older cottages and farmhouses around Hollow Street can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Why Hollow Street clients choose us
- Rated 4.9 stars on Google
- 20+ years of sealant experience
- Neat joints and a tidy finish
- Homes, businesses and hotels
See what affects the cost and customer reviews.
Questions from Hollow Street
Is Hollow Street within the area you cover?
Yes, Hollow Street is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do sand mastic in Hollow Street?
Yes. Our work covers London and the South East, and Hollow Street is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear quote.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Are you fully insured?
Yes. We’re fully insured.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Do you guarantee sand mastic work?
Our 12-month guarantee applies to all our work.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Windows and doors in Hollow Street
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.
Rented homes near Sturry station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like Chislet Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Hollow Street is about 3 miles south-east of Herne Bay, in Kent. Jobs in Hollow Street get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Kent coverage runs to 922 places, Hollow Street among them. We also work in Chelmsford, about 41 miles from Hollow Street.
Here we cover the CT3 postcode area for sand mastic. Nearby, we also carry out sand mastic in Chislet (1 mile north-east), Chitty (1 mile north-east), Old Tree (1 mile north-west), Boyden Gate (1 mile north) and Hoath (1 mile west). Further out, we also cover Canterbury (6 miles south-west), Margate (9 miles east), Dover (14 miles south), Ramsgate (10 miles east), Broadstairs (11 miles east) and Whitstable (7 miles west).
Local landmarks in Hollow Street
Typical jobs here are in homes near Grove Ferry Picnic Area and Spires Academy, among other places. The nearest railway station is Sturry station, roughly 3.6 miles south-west. Well-known places in the area include St Martins Hospital (5.1 miles south-west). Not far away are West Blean and Thornden Woods.
The process
When we arrive, we look over the joints with you first. Surfaces next to the work are protected before work begins. The work normally takes a few hours for a single window, longer for several. In a small place like Hollow Street, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- 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
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Read more
More services for Hollow Street
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
How the job changes by surface
Stone surrounds
We take care not to mark the stone while raking out the old mastic.
Timber door frames
A neat sand mastic joint round a front door suits a period home.
When something else is needed
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Broken panes
- Masonry that needs repairing
- Whether work needs listed building consent
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Tenement windows
- Stone surrounds
- Brick reveals
- Timber door frames
- Period & listed homes
- Sash and case windows
Signs you need sand mastic in Hollow Street
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
The problems people normally mention when they call are:
- Tired mastic found when preparing windows for paint
- Failed mastic on an exposed elevation
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
For an older house near a landmark such as Church of St Mary the Virgin, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- How hidden problems are handled
- Whether the sealant suits the joint
- Whether VAT is included
- How the joint is cleaned and prepared