Kent · England

Canterbury New Build Mastic

We cover Canterbury for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and a one-year guarantee.

  • New-build shower sealant that has already split
  • Kitchen sealant that has pulled off the wall
  • Cracks appearing as a new home settles

Trusted new build mastic in Canterbury

Your questions about new build mastic in Canterbury

Can you do new build mastic in Canterbury?

Yes. We work across London and the South East, and Canterbury is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing.

Is there a guarantee on new build mastic in Canterbury?

Every job comes with our one-year guarantee, wherever it is. We are also fully insured and ARBOMaster approved.

Can you quote for more than one area?

Yes, and it often makes sense. Doing several areas at once is generally more efficient.

What do you need from me for a quote?

Tell us what needs doing and where, with photos by email if possible. We’ll ask anything else we need to know.

Will you just run a new bead over the existing one?

No. Fresh silicone does not stick to the old layer, so sealing over the top fails quickly. We cut the old bead out completely.

Do I need to be at home?

We need access to the joints, so we’ll agree that with you when we book. Indoors, that normally means someone at home.

Will it make a mess?

No. We work neatly, protect the area around the joints and tidy up afterwards.

Can landlords and businesses book you?

Yes, we do. We work in homes, commercial premises and hotels, and we are fully insured.

New build mastic in Canterbury, done properly

Some new-home owners let the house settle before resealing. For small cosmetic gaps, that’s reasonable, but a seal that’s letting water through needs doing now. We work on skirting & floors, plot handovers and bathrooms & en suites, and common reasons people get in touch are sealant applied over dusty or wet surfaces and leaking shower tray seals in a new home.

Canterbury is big enough to have new developments going up alongside its older streets. New homes need their plot mastic and sealant finished well, and owners often find snags in the first year or two, as a new house dries out and settles.

All our work is covered by a 12-month guarantee.

Mr Mastic applicator sealing the vertical joint between a glass shower screen and tiled wall
Where
Canterbury (CT1, CT2, CT4, CT3)
Wider area
Kent
Cover
A year, on every job
Price
A clear quote up front
Phone
0345 464 0079
Page updated
26 October 2026

When it is not the sealant

To be straight with you, some problems need a different trade:

  • Baths and trays that move too much for sealant to cope with
  • Disputes or warranty claims with your builder
  • Damaged fittings that need replacing

Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.

Where we work in Canterbury

  • Bathrooms & en suites
  • Skirting & floors
  • Plot handovers
  • Show homes
  • Windows & doors
  • Kitchens

Do you need new build mastic in Canterbury?

Once people move in, baths and trays take weight and bed down. A bath sealed empty drops slightly when filled, straining the joint and can tear.

The most common problems we see are:

  • Smeared, uneven beads picked up at snagging
  • Cracked sealant around new window and door frames
  • Joints pulling apart as timber shrinks
  • Gaps behind new kitchen upstands

For new homes near Canterbury East station, it’s worth checking the sealant early, while snags are still fresh.

What your quote should include

  • What preparation is included
  • When the joint can take water or movement
  • Who turns up on the day
  • What product goes in the joint

How to choose a mastic man

How we quote for new build mastic

We quote each job individually. These are the things that affect it:

  • The old material and how stubborn it is
  • The amount of work
  • Any working-time requirements on site
  • Whether there’s mould to deal with

A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.

Asking for a quote

When you call or email, it’s useful to know:

  • Whether it’s a home or a business
  • What’s wrong with the joints now
  • Where the job is, and your postcode
  • Any previous sealing or DIY work

It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or email us.

Joints and finishes in Canterbury homes

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.

In and around Canterbury, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.

Canterbury is in Kent. Every kind of property in Canterbury is covered for new build mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Kent, we cover 922 places, and Canterbury is one of them. You can also see our page for Chelmsford, roughly 41 miles from Canterbury.

Jobs for new build mastic in CT1, CT2, CT4 and CT3 is quoted and booked the same way as anywhere else. You will find streets such as Long Market, High Street and High Street St Gregorys. You’ll find Canterbury on the A2 and A28, which makes it straightforward to reach with everything needed for new build mastic. If you’re just outside Canterbury, we cover 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). As one of the bigger places in Kent, Canterbury has every kind of property, from flats to offices.

Landmarks near Canterbury

In Canterbury, that means homes and buildings near Canterbury School of Architecture, Bus Company Island and St Thomas of Canterbury Church and the streets around them. You will also find The Old Buttermarket pub (within half a mile south-west) and Barton Court Grammar School (0.5 miles east). Canterbury has its own railway station: Canterbury East station. Other landmarks nearby 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.

Map of Canterbury © OpenStreetMap contributors

Surface by surface

Plot handovers

Taking time over preparation reduces return visits. We clean out building dust before sealing.

Bathrooms and en suites

En suite showers are a common source of leaks into the room below. A proper reseal keeps water in the tray.

The process

Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours in a single home. Jobs in a place the size of Canterbury range from town-centre flats to offices and family homes. Whichever it is, tell us how to get in, where to park and where the work is.

  1. We go through the snagging list or plot schedule and agree the joints to do.
  2. The old bead comes out in full, with no layer left behind.
  3. We clean off dust from the build and prime the surfaces where the product needs it.
  4. New sealant suited to each joint is applied and tooled neatly.
  5. Finally, each room is checked and you’re given the cure time.

How to prepare

  • Try not to wet indoor joints just before the visit
  • Keep pets and children clear of the area while we work
  • Mention if the joints have been sealed before

How to get a quote

For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.

Ask for a quote

Related advice

Why act early in Canterbury

Running a new bead over the builder’s sealant might look tidy for a few weeks, but it cannot bond to what’s underneath. A lasting seal starts with removing the old one completely. In a large rental market like Canterbury, tired sealant leads to tenant complaints about mould, damp and leaks. Sorting it between tenancies is easier than dealing with it mid-let.

The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.

Why book with us

  • Fully insured
  • Neat joints and a tidy finish
  • Rated 4.9 stars on Google
  • Sanitary silicone with an anti-fungal additive in wet areas

Take a look at what affects the cost or customer reviews.

DIY sealant or a professional job?

If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.

A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job