Hertfordshire · England

South Mimms Floor Joint Sealing

Specialist floor joint sealing for South Mimms: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.

  • Gaps at thresholds between rooms
  • Tiled floors with no room to move
  • Grout used at the floor edge instead of sealant

Floor joint sealing near South Mimms

Different surfaces, different methods

Commercial floors

Commercial washrooms and kitchens have floor joints that get wet constantly. They’re resealed with a flexible, water-resistant sealant.

Thresholds

Threshold joints get a lot of feet, so we choose a hard-wearing, flexible product and neatly finished.

About our floor joint sealing in South Mimms

In commercial and industrial units, concrete floor joints take a hammering from wheels and traffic. Each is resealed with a floor-joint product suited to what runs over it. Common call-outs are for caulk that has cracked where the floor moves and worn sealant at door thresholds, across skirting boards, concrete floor joints and commercial floors.

Work in a small place like South Mimms just needs the journey and access planning, and the work itself is the same as on any site.

Your job is guaranteed for a year, as with all our work.

Place
South Mimms (EN6)
Region
Hertfordshire
Guarantee
One year on every job
Price
A clear quote up front
Phone
0345 464 0079
Page updated
26 October 2026
The Mr Mastic team in navy uniforms in front of three Mr Mastic vans

DIY sealant or a professional job?

If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.

Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

What floor joint sealing looks like in South Mimms

Across Hertfordshire, 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. The joint at the skirting or threshold has to allow for that.

For buildings such as Church of St Giles, floor and skirting joints in halls and kitchens wear like any others. Schools such as St Giles' CofE Primary School are buildings too, and entrance and corridor floor joints take a lot of traffic. Rented homes near Potters Bar station change hands often, and open skirting and floor joints collect dirt and water, so seal them while the property is empty.

South Mimms is about 2 miles west of Potters Bar, in Hertfordshire. Every kind of property in South Mimms is covered for floor joint sealing, old or new, large or small. The work is guaranteed for a year. South Mimms is one of 381 places in Hertfordshire where we work for floor joint sealing. Our London page covers work nearby.

Work in EN6 is quoted and booked the same way as anywhere else. Local streets include St Giles' Avenue, Blanche Lane and Greyhound Lane. We also cover the places around South Mimms: Ridge (1 mile south-west), Dancers Hill (1 mile south-east), Kitts End (2 miles south-east), Well End (2 miles south-west) and Green Street (2 miles south-west). Further out, we also cover Watford (8 miles west), Hemel Hempstead (11 miles west), Stevenage (15 miles north), St Albans (6 miles north-west), Welwyn Garden City (7 miles north) and Harpenden (10 miles north-west).

Near you in South Mimms

Typical jobs here are in homes near The White Hart Public House, North Mimms Park and Dame Alice Owen's School. For rail, the closest station is Potters Bar station, about 1.6 miles east of the centre. Other landmarks nearby include Spires Shopping Centre (2.9 miles south-east) and Shenley Hospital (2.7 miles west). Green spaces nearby include Darland's Lake and Furzefield Wood and Lower Halfpenny.

Map of South Mimms © OpenStreetMap contributors

Your questions about floor joint sealing in South Mimms

Do you work for landlords with property near Potters Bar station?

Yes, we work for landlords and agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.

Can you do floor joint sealing in South Mimms?

Yes, South Mimms is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing.

Can you quote for more than one area?

Yes. Several rooms, windows or areas can go on one quote.

What do you put in the joint?

The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.

What does floor joint sealing cost?

Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or drop us an email with a short description of the job.

How long before the joint can take traffic?

That varies with the sealant and the room. We give you the times for walking, cleaning and traffic when we finish.

Do you seal floor joints in bathrooms and kitchens?

Yes. The old joint comes out and a flexible silicone replaces it in a colour to suit.

Do you seal warehouse floor joints?

Yes. Old filler is cleaned out and the joint resealed with a floor-joint product. Let us know about the traffic.

Honest limits

Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant won’t put right:

  • Subfloor problems that need a flooring contractor
  • Movement too big for a sealant joint
  • Loose, hollow or cracked tiles, which need a tiler

If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.

Joints and surfaces we work on

  • Commercial floors
  • Thresholds
  • Wet room & bathroom floors
  • Skirting boards
  • Tiled floors
  • Concrete floor joints

Work for landlords, hotels and businesses

We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.

If you manage several properties in or around South Mimms, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.

How we quote for floor joint sealing

Some jobs are bigger than they look, and some smaller. The main factors:

  • Working hours on commercial sites
  • Whether the work is at height
  • The number and length of the joints
  • How many areas need sealing

A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, ring 0345 464 0079 or send us an email and we will give you an honest view and a quote.

What to tell us for a quote

To make quoting easier, please include:

  • The rough size of the job
  • The problem you’ve noticed
  • If someone has resealed it before
  • Access, such as stairs, a lift or height

We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or send us an email with the details and send photos if you have them.

What happens on the day

You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for most rooms, longer for large commercial floors in most cases. For a village or hamlet like South Mimms, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.

  1. We look at the gap and the floor type and agree the right sealant.
  2. We take out any old caulk, sealant or grout along the line.
  3. The joint is vacuumed clean, with backing fitted wherever depth matters.
  4. We apply a flexible sealant, or a floor-joint product on concrete, in a suitable colour.
  5. The joint is tooled to a neat finish and we tell you when it can take feet and a mop.

Getting ready for the visit

  • For business premises, tell us about site rules or sign-in
  • Keep pets and children clear of the area while we work
  • Mention any leaks or damp you’ve noticed

Ask for a quote

Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved.

Get a price

Read more

How to look after the new joints

Joint life depends on how it’s used and looked after. Here’s what we suggest:

  • Avoid sloshing water against skirting
  • Check the sealant is paintable before decorating
  • Keep dirt out of the joints
  • Act on grout cracks that run in a straight line

Mop with a well-wrung mop rather than flooding the floor. Less water at the edges helps the joints last.

Open skirting gaps let in draughts, dust and sometimes insects. Sealing it keeps the room tidier and stops it getting worse.

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