Ships nationwide from Tracy, CA·Will-call pickup same day·(209) 208-4656
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moisture vapor barrier

Stop the slab from lifting your floor.

Moisture vapor barrier primers and MVB systems that stop slab moisture before it lifts your finish. Field-tested and shipped nationwide from Exclusive Resin Supply.

what it is

The number one cause of a callback.

Slab moisture is patient and it is brutal. A floor can look perfect for weeks, then vapor pressure pushes through and the coating bubbles, delaminates, or whitens. A moisture vapor barrier is the insurance that keeps your reputation intact.

We stock the MVB primers that seal a green or damp slab so the system above it can cure and stay put. Test first, then barrier, then build.

Slab moisture does not care how good the topcoat is.

where it shines

Where it earns its place.

New construction, ground-level slabs, anything without a vapor retarder poured under it, and any floor that has already bubbled once. If the concrete can wick moisture, vapor pressure will find the weakest bond in your system and push it loose. A barrier is how you stop that before it costs you a re-do.

This is not a glamorous part of the catalog and it is one of the most important. The crews that test slabs and barrier when the numbers call for it are the crews that do not get the angry phone call six weeks later. We stock the primers and the test kits both.

Slab moisture does not care how good the topcoat is.

in this line

Shop this line.

The moisture vapor barrier products we stock and ship nationwide. Browse here, then check out in the shop or call the bench to spec your job.

MVB Primer

The Resin Lab

The Resin Lab MVB Primer

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Simiron MVB

Simiron

Simiron MVB

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JP Resin MVB Flow

JP Resin

JP Resin MVB Flow

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Moisture Vapor Barrier job site

tested before it ships

The owner’s read on it.

These barriers earned their place by holding back moisture on slabs that would otherwise have lifted a finish. Tested where it counts, before it reaches your job.

owner’s verdict“Slab moisture does not care how good the topcoat is.”

Learn it hands-on at the academy →

pairs well with

What goes down with it.

Epoxy build coatgoes down once the slab is sealed
Moisture test kitsmeasure before you barrier
Self-levelerflatten a sealed slab before the finish

questions from the bench

Spec & support

How do I know if I need a moisture barrier?

Test the slab. New concrete and slabs without a vapor retarder under them are prime suspects. We stock test kits so you are not guessing.

What happens if I skip it?

On a wet slab, vapor pressure can bubble or delaminate the floor weeks later. That is the classic callback this product prevents.

Can I coat a new slab right away?

Fresh concrete holds a lot of moisture. Often you need a high-tolerance MVB to coat early. Tell us the slab age and test numbers.

Do I need to test the slab first?

Always. Test first, barrier second, build third. Bring us the calcium chloride or RH number and we spec the barrier around it. Skipping the test is how floors fail.

Will a barrier fix an already-failing floor?

No. It is preventive. A failing floor needs diagnosis and likely removal first. Call and we will talk it through.

rooted here

Tracy, California, and proud of it.

We are a member of the Lathrop Chamber of Commerce and we sponsor the kids who play here, from Lathrop Little League to the Junior Spartans. We ship to crews all over the country now, but every order still leaves this bench in the valley.

We ship coast to coast. This bench is still home.
Set up an account

Stock the way you work.

Three ways to buy from the shelf, from a single decorative job to a running shop account. Ordering and checkout run through our shop, so these are starting points, not a cart.

Job KitPer JobFor the one-off floor
  • Everything for a single pour
  • Matched base, color and topcoat
  • Owner walks you through it
  • Ships nationwide, or pick up in Tracy
Pro CrewVolumeFor the working installer
  • Volume pricing across every line
  • Priority on the bench
  • First look at new systems
  • Seat at the training academy
Shop AccountWholesaleFor the crew that runs daily
  • Standing wholesale terms
  • Custom flake blends to spec
  • Stock held for your schedule
  • Direct line to the owner
Get in touch

Tell us what you are pouring.

Questions on a product, a quantity, wholesale pricing, pickup, or training? Send a message and you will reach a person who has used what we sell.

Putting down moisture vapor barrier?

Talk to the owner about quantities, or browse the rest of the catalog.