Essex · England

Floor Joint Sealing in Chelmsford

Sealing skirting-to-floor joints, tiled floor movement joints and concrete floor joints for homes and businesses in Chelmsford and across Essex. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.

  • Gaps at thresholds between rooms
  • Gaps between floors and kitchen plinths
  • Open gaps along the bottom of skirting boards

Floor joint sealing for Chelmsford homes and businesses

Floor joint sealing in Chelmsford, done properly

Floors move, and the joint where they meet a wall, skirting, threshold or another floor has to move with them. Skirting-to-floor gaps, tiled floor joints and concrete joints are all sealed. We’re often asked to deal with rigid edge joints in tiled floors and gaps at thresholds between rooms, across concrete floor joints, tiled floors and skirting boards.

A place the size of Chelmsford has new developments as well as older streets. New homes need their plot mastic and sealant finished well, and owners often find snags in the first year or two.

A one-year guarantee comes as standard.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Chelmsford (CM1, CM2, CM3, CM4)
Wider area
Essex
Cover
A year, on every job
Quote
A clear price before any work starts
Call
0345 464 0079
Last updated
26 October 2026

Aftercare tips

Aftercare is simple, and it makes a real difference:

  • Lift furniture rather than dragging it across joints
  • Keep dirt out of the joints
  • Have a cracking tiled floor checked before tiles break
  • Check skirting joints after the heating season

In commercial units, keep pallet trucks and heavy wheels off new joints until they’ve cured. Mark the area off so drivers avoid it.

A tiled floor that cracks along a line will keep cracking until it can move. Adding a movement joint early can stop cracks spreading to the tiles.

Surface by surface

Concrete floor joints

Open concrete joints chip at the edges when wheels cross them. A sealed joint protects the edges and keeps dirt out.

Thresholds

Thresholds take daily traffic, so the sealant has to be tough as well as flexible and tool it flush.

Why it’s worth doing now in Chelmsford

Not every floor joint takes the same sealant: flexible sealant for skirting and tiles, silicone in wet areas, and floor-joint products for concrete. Getting that choice wrong is a common reason joints fail. In a busy place like Chelmsford, a failed joint in a flat or office can send water into the space below, where it’s often found late and is bigger to put right.

Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.

Why us?

  • White, clear, grey or coloured to suit, where the product allows
  • Sealant colour chosen to suit
  • Old sealant always removed completely
  • 4.9 on Google from 180+ five-star reviews

Take a look at our cost guide or what customers say.

What we do, step by step

We keep the work tidy and contained to the area we are working on, so you can carry on as normal. Expect the work to take a morning or an afternoon for most homes, and we explain the cure time before we leave. Commercial jobs in Chelmsford can be planned out of hours where a building cannot close, while home visits are arranged within our normal working hours, Monday to Saturday.

  1. First, the floor type, the gap and the traffic are checked.
  2. We remove what’s in the joint now.
  3. We vacuum out the joint and add backing where the depth needs setting.
  4. We apply the sealant in a colour that suits the floor.
  5. The joint is tooled neatly and the cure time explained.

How to prepare

  • Keep pets and children clear of the area while we work
  • Where the joints are inside, avoid wetting them before we arrive
  • Clear items away from the joints we’re working on

How to get a quote

It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you are ready, phone 0345 464 0079 or send us an email.

Get a quick quote

Related advice

FAQs for Chelmsford

Can you help a landlord with a rental near Chelmsford station?

Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.

Can you do floor joint sealing in Chelmsford?

Yes. Our work covers London and the South East, and Chelmsford is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.

Do you remove the old sealant?

Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.

Will I be able to paint over the new joint?

It depends on the sealant, so let us know first. Joints that will be painted get a paintable product and wet areas get silicone.

What do you need from me for a quote?

Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or email us.

When can I walk on the floor?

We’ll tell you before we leave. That depends on the product, and walking on it usually comes before mopping or wheeled traffic.

Do you seal kitchen plinths to the floor?

Yes. We cut out any old sealant or caulk and reseal with flexible silicone in a colour to suit.

Can you use decorators’ caulk instead?

Not where the floor moves or gets wet. Caulk cracks as the floor moves. A flexible sealant lasts longer there.

What floor joint sealing looks like in Chelmsford

Across Essex, floors range from older suspended timber floors to concrete slabs in newer homes and commercial units, and they don’t all move the same way. That’s why the skirting and threshold joints need a flexible seal.

For site and facilities teams at buildings such as Trinity Road Primary School, entrance and corridor floor joints take a lot of traffic. Rented homes near Chelmsford station change hands often, and open skirting and floor joints collect dirt and water, so seal them while the property is empty.

Chelmsford is about 30 miles north-east of London, in Essex. Our applicators cover floor joint sealing for homes and businesses in Chelmsford and nearby. Our area takes in 644 places across Essex, large and small.

We work across CM1, CM2, CM3 and CM4 for floor joint sealing and the streets around it. That includes homes and businesses on Backnang Square, High Street and Barrack Square. Chelmsford is on the A12 and A130, which makes it straightforward to reach. Nearby, we also carry out floor joint sealing in Moulsham (1 mile south-west), Patching (1 mile north-west), Widford (2 miles south-west), Broomfield (2 miles north) and Writtle (3 miles west). Further out, we also cover Basildon (11 miles south), Braintree (11 miles north), Brentwood (11 miles south-west), Maldon (8 miles east), Canvey Island (15 miles south) and Billericay (8 miles south). As one of the bigger places in Essex, Chelmsford has homes, rented property and businesses of every kind.

Around Chelmsford

Around Chelmsford, our work takes us to homes and buildings near Our Lady Immaculate Church, The Boswells School and Chelmsford College and the streets around them. Other local landmarks include Chelmer Valley Riverside (0.5 miles north-west) and The Two Brewers Public House (under half a mile south-west). The closest station to Chelmsford is Chelmsford station, roughly 0.7 miles west. A little further out are Priory Hospital (within half a mile north) and Peter Edwards Museum And Library (0.8 miles south-west). For a walk, there’s Newland Grove.

Map of Chelmsford © OpenStreetMap contributors

Landlords, agents and businesses in Chelmsford

Landlords and agents in Chelmsford can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.

In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.

Common problems we fix in Chelmsford

Concrete floor joints break down when traffic runs over open or failed joints. Hard wheels damage the joint edges until the joint widens.

Most people get in touch after spotting one of these:

  • Threshold joints that have opened or worn
  • Grout cracking in a straight line across a floor
  • Dirt and water collecting in open floor joints
  • Caulk that has cracked where the floor moves

Community buildings like Church of the Holy Trinity are part of the picture too: joints in its floors, skirtings and thresholds need resealing as they wear.

Before you book anyone

  • Whether they’re fully insured
  • What the cure time is
  • What happens if they find a problem under the old sealant
  • How long the guarantee is

10 questions to ask before booking

How we quote for floor joint sealing

There’s no set price list. What we look at:

  • Any working-time requirements on site
  • The amount of work
  • How much old sealant there is and how hard it is to remove
  • The number of rooms or windows

There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email and we’ll talk you through it.

Helping us quote

The more you tell us, the more accurate the quote. When you ask for a quote, tell us:

  • Access, such as stairs, a lift or height
  • Where the job is, and your postcode
  • Whether it has been sealed before
  • The type of property

There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.

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