Kent · England
Canterbury Sand Mastic
Professional sand mastic in and around Canterbury, with every bit of old sealant taken out first and a 12-month guarantee.
- Mastic dropping out of the joint
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
About our sand mastic in Canterbury
On many period windows, sand mastic looks right and suits the building. On modern frames we’d normally use a flexible sealant, and we’ll talk through which suits your home. We work on stone surrounds, period & listed homes and brick reveals, and the jobs we see most are crumbling sand mastic round a window and modern sealant on a period surround.
A place the size of Canterbury has every kind of window, from older timber frames to uPVC and aluminium in newer homes, plus conservatories, patio doors and rooflights. Each needs the right sealant, and each joint wears out eventually.
You get a one-year guarantee, the same in Canterbury as everywhere else we work.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Make sure water runs off the sill
- Do not run silicone over sand mastic
- Take care around the mastic when scraping paint
- Leave the new mastic unpainted
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
How it works
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and tidy away. Most jobs take a few hours per window, depending on the condition of the joints. Where a business in Canterbury needs to stay open, out-of-hours working can be arranged, while home visits are arranged within our normal working hours, Monday to Saturday.
- 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.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Mention any tricky access
- Clear the area around the work
- Mention if the joints have been sealed before
Getting a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Read more
How we quote for sand mastic
We quote each job individually. This is what makes a difference:
- The product the joint needs
- How much there is to do
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- How we’d reach the joints
- Roughly how big the job is
- Whether it’s a home or a business
- A few pictures by email, if you can
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and give you a clear quote before work begins.
Canterbury: your questions answered
Do you work for landlords with property near Canterbury East station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
Is Canterbury in your area for sand mastic?
Yes. Our work covers London and the South East, and Canterbury is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Can you seal over the old sealant?
No, because it fails. The old sealant always comes out first.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Can you match the sealant colour?
Yes. White, clear and grey are common, and other colours are available, and we will agree it with you first.
Is sand mastic better than silicone for my windows?
Sand mastic generally suits period timber windows best. On modern frames, we’d normally use a flexible sealant, and we will explain why.
Places near Canterbury
Also in Canterbury
Why act early in Canterbury
Filling over old, loose mastic does not last. We remove the loose material first so the new mastic stays put. For businesses in Canterbury, a room closed because of a leak or mould costs more than the sealant, so failing joints are best replaced on a planned basis.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Why us?
- Old sealant always removed completely
- Sanitary silicone with an anti-fungal additive in wet areas
- Neat joints and a tidy finish
- Arbo and Everbuild products
Read what affects the cost or customer reviews.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, 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.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Cracked or broken glass
- Masonry that needs repairing
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Where we work in Canterbury
- Period & listed homes
- Stone surrounds
- Brick reveals
- Sash and case windows
- Tenement windows
- Timber door frames
Do you need sand mastic in Canterbury?
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
Most people get in touch when they notice one of these:
- Gaps between timber frames and stone or brick
- Patchy fillers round a sash window
- Failed mastic on an exposed elevation
- Gaps round a timber door in stone or brick
Rented homes near Canterbury East station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- How hidden problems are handled
- Whether VAT is included
- Whether you can choose the colour
- How long the guarantee is
What sand mastic looks like in Canterbury
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.
Schools such as St Peter's Methodist Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near Church of St Margaret, the joint between an old wall and a newer frame is normally the first place rain gets in.
Canterbury is in Kent. Every kind of property in Canterbury is covered for sand mastic. Every job comes with our one-year guarantee. Our Kent coverage runs to 922 places, and Canterbury is one of them. Chelmsford is on our list too, about 41 miles from Canterbury.
Here we cover the CT1, CT2, CT4 and CT3 postcode area for sand mastic. If you need sand mastic at a property on Long Market, High Street and High Street St Gregorys or a nearby road, we can help. You will find Canterbury on the A2 and A28, so it’s easy for us to get to with everything needed for sand mastic. Close by, we work in Wincheap (1 mile south-west), Harbledown (1 mile west), Hales Place (1 mile north), Thanington (1 mile south-west) and Stuppington (1 mile south). Within a short drive, we also cover Ashford (13 miles south-west), Margate (15 miles north-east), Dover (14 miles south-east), Folkestone (14 miles south), Ramsgate (15 miles east) and Whitstable (6 miles north-west). Canterbury is among the bigger towns we cover in Kent.
Local landmarks in Canterbury
In Canterbury, that means homes and buildings near Canterbury School of Architecture, Bus Company Island and St Thomas of Canterbury Church, among other places. You will also find The Old Buttermarket pub (under half a mile south-west) and Barton Court Grammar School (0.5 miles east). There’s a railway station in Canterbury itself: Canterbury East station. Well-known places in the area include Whitefriars Shopping Centre (under half a mile south-west) and Canterbury Roman Museum (within half a mile south). Open spaces near Canterbury include Blean Woods RSPB Reserve.