The Mastic Doctor team standing beside their branded vans outside an office building
Medway · England

Floor Joint Sealing contractors in Upper Upnor

Floor joint sealing in Upper Upnor, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Joint fill separating from the concrete
  • Old filler gone hard, cracked or loose
  • Drivers complaining about joints on a route
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Floor joint sealing near Upper Upnor

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Questions we’re asked in Upper Upnor

Is Castle View Business Centre, near Upper Upnor, within your area?

Yes. Our area takes in Upper Upnor and its surroundings, with estates and business parks such as Castle View Business Centre included. To start, just give us a call on 01277 525 020 or send photos by email with the unit, the joints involved and your access times.

Is Upper Upnor off your patch?

Not at all. Upper Upnor is within our area. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Do you repair broken joint edges?

Edge condition is recorded when we look at the floor. Damaged edges are flagged up front so the filling isn’t wasted.

Which sealant will you use?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Can you follow the specification on our project?

Yes. Send it with your enquiry, and we will price the work to it, flagging anything that needs clarifying.

When can forklifts run over new joint filler?

Each product has its own cure time, and cold floors slow it down. Phasing is planned with that in mind.

Is it fine to apply new sealant on top of old?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

Floor joint sealing in Upper Upnor, done properly

Mastic Doctor has worked on joints in commercial buildings for over 20 years. Applicators carry CSCS cards and work to your site rules, and the business is CHAS accredited and a Constructionline member, with public liability insurance in place. Finished floor joints in Upper Upnor carry our 12-month guarantee. Most enquiries involve grimy joint lines spoiling a showroom floor and trucks and loads jolting over damaged joints, across joints along racking aisles, construction joints and retail and showroom floors. Facilities teams, main contractors and managing agents in Upper Upnor tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

In and around smaller places like Upper Upnor, the concrete floors we see are often in converted farm buildings, small workshops and storage units. Joints in those slabs take vehicles, trolleys and foot traffic, and need a filler or sealant to match.

A 12-month guarantee applies to all our work. If an installation problem shows up, call 01277 525 020 or email drawings and photos and we’ll arrange a return visit.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Upper Upnor (ME2)
Wider area
Medway
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

General trades versus a specialist

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Traffic, movement and joints around Upper Upnor

Upper Upnor lies within about 2 miles of the sea. External movement joints in car parks, ramps and yards near the coast take salt and wind-driven rain on top of traffic, so it pays to keep them sealed. Upper Upnor is in the South East, one of the UK’s drier regions. External joints still wait for dry conditions, and gritting in cold spells finds its way into open joints.

Schools such as Wainscott Primary School have movement joints in their walls and floors that are easy to overlook. Hospital campuses such as Medway Maritime Hospital (to the south-east of Upper Upnor) grow in stages, leaving movement joints wherever new blocks meet old. At places like Gun Lane Business Centre, 1.4 miles to the south-west of Upper Upnor, joints are sealed a section at a time so operations carry on.

Upper Upnor is about 2 miles north-east of Rochester, in Medway. Across the ME2 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 54 places in Medway. Our London page has more on work in that area.

Commercial sites across ME2 are covered for floor joints. We cover commercial and managed buildings on High Street, Upnor Road and Castle Street. Close to Upper Upnor, our area also takes in Lower Upnor (1 mile north-east), Wainscott (1 mile north-west), Chattenden (1 mile north), Hoo St Werburgh (2 miles north-east) and Cooling Street (3 miles north). A short drive away, we cover Gillingham (3 miles south-east), Chatham (3 miles south), Rainham (5 miles south-east), Luton (3 miles south), Park Wood (5 miles south-east) and Lordswood (5 miles south).

Landmarks near Upper Upnor

In Upper Upnor, that means premises near The Kings Arms, Lower Lines Park and Waterfront University Technical College and the streets around them. Also close by are Former Ordnance Store At Chatham Gun Wharf (1.4 miles south) and Waterfront UTC (1.3 miles south-east). For rail, the closest station is Strood station, about 1.2 miles south-west of the centre. Nearby you will also find French Hospital (1.5 miles south-west) and Pentagon Shopping Centre (1.6 miles south). Not far away are Gad's Hill and Rede Common.

Map of Upper Upnor © OpenStreetMap contributors

Looking after the joints

Keep the joints in good shape with a few simple steps:

  • Mention any aggressive cleaning regime at quote stage
  • Sweep debris out of open joints until they can be filled
  • Hold traffic back until the product has cured
  • Record damaged joints with a photo and a location

Ask drivers not to drag forks or pallets along the floor. Steel tines will mark a good joint over time.

Joint damage starts slowly and then speeds up. Once the first piece is out, wheels drop further and hit harder, so it pays to act at the first signs.

What affects the price in Upper Upnor

Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:

  • Joint width, depth and condition
  • Removal of failed or old sealant
  • Phasing around occupants
  • Any access equipment needed

The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

What to include in your enquiry

Good information means a firmer quote. When you get in touch, include:

  • Drawings or a marked-up plan, if available
  • The site address and postcode
  • Any dates the work must fit around
  • Clear photographs of the problem areas

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, call the office on 01277 525 020 or use the quote form.

When something else is needed

We check first that sealant really is the fix. It won’t put right:

  • Slab panels that rock or move under load
  • Structural cracking in the slab
  • Worn screed or surface finishes

Not sure which it is? You can call the office on 01277 525 020 or send photos by email and we will tell you honestly before you book.

Joints and surfaces we work on

  • Saw-cut induced joints
  • Forklift and pallet-truck routes
  • Joints along racking aisles
  • Loading bays
  • Retail and showroom floors
  • Construction joints

How a job runs

Working in a building that stays open takes some planning. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. For work around Upper Upnor, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. We agree the traffic routes and phasing with your site team.
  2. Any joints with broken edges are flagged before work starts.
  3. Failed material and debris are removed and the joint cleaned.
  4. The chosen filler or sealant goes in flush with the slab.
  5. Each area is handed back when ready for traffic.

What we need from you

  • Arrange parking or a loading space
  • Make sure the joints can be reached
  • Warn occupants and staff about the work

Getting a fixed quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, call 01277 525 020 or email a schedule or drawings.

Get a quick quote

Related advice

Why it’s worth doing now in Upper Upnor

Duct tape or a general builders’ sealant can seem to buy some time. None of it is designed for wheel loads, and it usually ends up dragged across the floor. The right filler or sealant saves doing it twice. For buildings around smaller places like Upper Upnor, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

There’s no price list, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.

Why choose Mastic Doctor in Upper Upnor

  • 12-month guarantee on workmanship
  • Over 20 years of commercial sealing
  • One number for every site we cover
  • Old sealant cut out, never sealed over

Take a look at our cost guide and our accreditations and insurance.

Accreditations

Trusted. Accredited. Insured.