Our slab is decades old and soaked in oil. Is it worth coating?

Usually yes. Oil contamination is handled by degreasing and by mechanically removing the contaminated top layer, and where it has gone deep the specification moves to a tolerant primer or a barrier coat. What does not work is coating straight over it, which is why the contaminated layer comes off rather than being sealed in.

There is already a coating down. Does all of it have to come off?

Not always. If the bond is sound it can be abraded back and coated over, which is faster and cheaper for you. If it is delaminating, overcoating only buys you a new floor failing on top of an old one, so it comes off. You will know which you are looking at before you have a price in your hand.

We have a handover date for a new tenant. Can you work to it?

Yes, and it is worth giving us the date at survey rather than after the quote. Preparation, coats and cure windows are scheduled backwards from handover, and where the program is tight we phase the space by section or work out of hours to hold the date.

What happens with the saw cuts and expansion joints?

They are cleaned out and filled with a flexible joint material, and where a previous contractor bridged them rigidly, that repair is cut out first. A joint that is still moving will crack whatever is laid over it, so the floor is detailed around it instead.

The unit is changing use. Does that change the floor?

It usually does. A slab that served heavy engineering may now need slip resistance for wash-down areas, or a food-safe finish with integral coving and falls to drain, which is a different specification entirely. Tell us what the space is becoming and the system is chosen for that rather than for what used to be there.

Commercial Epoxy Flooring Vallejo

Joints detailed · Zones specified · Handover dates met

Vallejo Commercial Epoxy Flooring Overview

Vallejo's commercial floor stock is old, and much of it was poured for heavy industry. The waterfront and Mare Island units come with decades of oil in the concrete, coatings that have been applied two or three times over, trench cuts filled with something that never matched, and saw joints that were rigidly bridged and have cracked again. None of that is a reason to avoid coating the slab. It is the reason the survey has to come first.

We take off whatever will not hold, and specify the build around the traffic and chemicals the space will see once it is in use. That might be a roller-applied epoxy, a broadcast quartz system where grip matters, or a heavier build where the loading justifies it. Those systems are described on our commercial epoxy floor systems page.

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Planetary grinder preparing the concrete floor of an auto shop with the roller doors open

What an Older Vallejo Slab Needs

A new-build slab is a straightforward job. A slab that has been worked on since the shipyard days needs decisions made about oil, about the coatings already on it, and about joints that are still moving. Those decisions are what the finished floor stands or falls on.

Oil pulled out, not sealed in

Machine shop and workshop slabs hold oil well below the surface. We degrease, grind, and where contamination has gone deep we specify a tolerant primer. Coating straight over saturated concrete gives you a floor that lifts in exactly the places that matter.

Sound coatings kept, failed ones removed

A sound coating can be abraded and overcoated, which is faster and cheaper than starting again. One that is delaminating has to come off, because a new floor laid over a failing one fails with it. The quote says which route your floor is taking and what it costs.

Joints treated as joints

Saw cuts and expansion joints move. They are cleaned out and filled with a flexible joint material rather than rigidly bridged with resin, so the joint keeps working instead of cracking a line straight back through the new floor.

Patchwork slabs brought to one plane

Trench cuts, old machine bases and mismatched infill leave a slab sitting in several planes. Those are ground and leveled first, because a coating follows whatever is beneath it and every step and dip stays visible afterwards.

Specified for the new use, not the old one

A unit built for heavy engineering and re-let to a distributor, a food producer or a gym needs a different floor. Build, slip level and chemical resistance are set around what is actually going to happen in the space.

Built to a handover date

Fit-outs run to fixed dates. Preparation, coats and cure windows are scheduled backwards from your handover, and the cure schedule is on the quote so it can be checked against the rest of the program.

How a Vallejo Commercial Install Runs

Survey and specification. We look over the slab, its joints and any existing coating, and go through your traffic, chemicals and program on site.
Specification and fixed quote. The quote names the system, the build thickness, how the slab gets prepared, how the joints are detailed and how long each coat needs, which is what lets you compare bids properly.
Removal and mechanical preparation. Failed coatings come off, the slab is shot blasted or ground to a sound, open profile, and repairs and leveling are finished before any resin goes down.
Joints, then installation. Joints are cut out and filled, then coats are applied in sequence with the correct recoat windows, phased by section or worked out of hours where the space is still in use.
Handover. You get the date the floor takes foot traffic, the date it takes forklifts, a maintenance schedule and the warranty.

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Older uncoated industrial slab in a pump room, patched and cracked around the pipework

Coated industrial floor with a checker plate access hatch, floor drains and a coved wall base

Why Vallejo Businesses Choose Us

Local to Solano County. We are based in Fairfield, twenty minutes up I-80, so getting to site for a survey, a snag or a callback is a short drive for us.
You find out about the slab before you commit. What is already down is dealt with at survey and written into the quote, not discovered midway through the install when the program has no room left in it.
Specification you can check. Every one of those decisions, the system, the thickness, the joint detail, the preparation method, is written down before you sign, so nothing about the floor is left to interpretation.

For residential work in Vallejo, see garage floor coatings in Vallejo. Our commercial and industrial pages also cover Fairfield, industrial epoxy flooring in Vacaville, Concord, Benicia, Sacramento and Oakland.

707-77RHYNO

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Frequently Asked Questions

Our slab is decades old and soaked in oil. Is it worth coating?
Usually yes. Oil contamination is handled by degreasing and by mechanically removing the contaminated top layer, and where it has gone deep the specification moves to a tolerant primer or a barrier coat. What does not work is coating straight over it, which is why the contaminated layer comes off rather than being sealed in.
There is already a coating down. Does all of it have to come off?
Not always. If the bond is sound it can be abraded back and coated over, which is faster and cheaper for you. If it is delaminating, overcoating only buys you a new floor failing on top of an old one, so it comes off. You will know which you are looking at before you have a price in your hand.
We have a handover date for a new tenant. Can you work to it?
Yes, and it is worth giving us the date at survey rather than after the quote. Preparation, coats and cure windows are scheduled backwards from handover, and where the program is tight we phase the space by section or work out of hours to hold the date.
What happens with the saw cuts and expansion joints?
They are cleaned out and filled with a flexible joint material, and where a previous contractor bridged them rigidly, that repair is cut out first. A joint that is still moving will crack whatever is laid over it, so the floor is detailed around it instead.
The unit is changing use. Does that change the floor?
It usually does. A slab that served heavy engineering may now need slip resistance for wash-down areas, or a food-safe finish with integral coving and falls to drain, which is a different specification entirely. Tell us what the space is becoming and the system is chosen for that rather than for what used to be there.

707-77RHYNO

Get a Quote

Get A Quote