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

Industrial and floor joint sealing in Northam, Southampton

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

  • Unfilled floor joints collecting dirt and grit
  • Untidy open joints in a retail unit
  • Broken arrises where pallet trucks cross
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Floor joint sealing near Northam

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

Floor joint sealing for commercial buildings in Northam

Floor joint sealing for us covers warehouse aisles, loading bays, production halls, retail floors and showroom slabs. Each job is priced from the metres of joint, their condition and the access windows we get and the figure is fixed before work begins. Most enquiries involve brittle joint filler breaking up and broken arrises where pallet trucks cross, across joints along racking aisles, saw-cut induced joints and construction joints. Facilities teams, main contractors and managing agents in Northam tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Small units near places like Northam are often converted farm buildings with new concrete floors. Saw-cut and construction joints in those floors need the right filler or sealant for the forklifts and trolleys that use them.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Northam (SO14, SO19, SO18)
Region
Southampton
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026

When something else is needed

Part of a good diagnosis is knowing where sealant stops. You will hear from us if the cause turns out to be one of these:

  • Joint edges that have already broken away, which need repairing before filling (we’ll tell you if so)
  • A floor that rocks at the joints, which needs a structural fix
  • Structural cracking in the slab

If you’re not sure, just speak to us on 01277 525 020 or send photos by email and we’ll give you a straight answer before you book.

Joints and surfaces we work on

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

Should maintenance staff do it?

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

From enquiry to sign-off

We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. If neighbouring businesses or buildings around Northam need work too, visits can be combined. Tell us your site hours and we’ll plan around them.

  1. First, the zones and order of work are agreed with you.
  2. We point out joints whose edges need repairing first.
  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.

Getting the site ready

  • Have the specification and drawings to hand
  • Point out any areas we must not close
  • Warn occupants and staff about the work

Request a quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, call 01277 525 020 or email drawings and photos.

Get a price

Advice

Floors, slabs and movement joints in Northam

Northam sits close to the coast, within about 2 miles. Coastal yards and decks give their joints salt and wet weather to deal with, not just wheels, so it pays to keep them sealed. Northam sits in one of the drier corners of the country, the South East. Outside joints in yards and car parks still have to be dry before sealing, and winter de-icing salt on car parks and ramps works into any open joint.

For a centre such as Marlands Shopping Centre, which lies west of Northam, the service yard and car park joints typically need attention first. Campuses like Solent University (to the west of Northam) mix old and new buildings, with movement joints wherever they meet. For an estate such as Royal South Hants Hospital, 0.8 miles to the west of Northam, the joints in ramps, decks and long building elevations all need attention over time.

Northam is about 1 mile south-east of Southampton, in Southampton. We cover commercial sites throughout Northam, whether it’s a single job or part of a planned programme. 30 places across Southampton fall within our area, Northam among them.

We cover the SO14, SO19 and SO18 postcode districts for floor joints. Streets here include Sea Road, Lumpy Lane and Cross Road, and sites on any of them can send details for a fixed quote. Close to Northam, our area also takes in Peartree Green (1 mile south), Bitterne Manor (1 mile north), Itchen (1 mile south-east), St Mary's (1 mile south-west) and Bitterne (1 mile east). Bigger towns within reach include Regents Park (3 miles west), Maybush (3 miles north-west), Coxford (3 miles north-west), Lordswood (3 miles north-west), Millbrook (3 miles west) and Redbridge (4 miles west).

Around Northam

Locally, jobs take us to sites close to Inspire Enterprise Academy, East Park and The Engineers Arms and the streets around them. The nearest railway station is Bitterne station, roughly 0.6 miles north. A little further out are Bitterne Local History Society Heritage And Research Centre (0.8 miles east) and Marlands Shopping Centre (1.2 miles west). The countryside around Northam includes Netley Common.

Map of Northam © OpenStreetMap contributors

Building owners, agents and FMs in Northam

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Northam can sit alongside others in a wider programme.

Cost factors for floor joints

Before we quote, we look at:

  • How much there is to seal
  • The product specified
  • Joint width, depth and condition
  • Whether the work must be split into stages

Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.

What to include in your enquiry

It doesn’t need to be a full survey. These details are enough to start:

  • Rough lengths or quantities, or drawings if you have them
  • Whether the building will be occupied during the work
  • Your programme or deadline
  • Clear photos of the problem areas

For a fixed quote, give us a call on 01277 525 020 or email the details over. You can also send details through our quote form.

What happens if it’s left?

Tape, or whatever sealant is in the stores cupboard, may look like a fix for a while. None of it is designed for wheel loads, and it usually ends up dragged across the floor. A product chosen for the traffic and movement does the job once. Small buildings around Northam suffer from failed joints as much as large ones. Early resealing avoids the damage that follows a leak.

We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we’ll price your job on its own details.

What you get with us

  • Public liability insurance in place
  • Constructionline member
  • Old sealant cut out, never sealed over
  • Work to your specification and the manufacturer’s guidance

Read how commercial sealant jobs are priced or how we’re accredited.

Your questions answered

Would you work within a site like Royal South Hants Hospital?

Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Does your area include sites such as Bitterne Business Centre, near Northam?

Yes. Estates, retail parks and business parks around Northam, Bitterne Business Centre among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.

Will you just go over the old sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.

What information helps you price floor joint sealing?

A rough joint length, a few photographs and a site plan let us give a quick quote. We can visit where that helps so speak to us on 01277 525 020 or email drawings and photos to set one up.

When can forklifts run over new joint filler?

Each product has its own cure time, and cold floors slow it down. We plan the phasing so that waiting time fits your operation.

How many days will you need on site?

We plan the time on site around your programme and access. You’ll have an expected duration with the quote.

How long do sealant joints last?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.

Accreditations

Trusted. Accredited. Insured.