VC-5 vs. Moisture Vapor Remediation

Moisture vapor transmission (MVT) through concrete slabs is one of the most common and costly problems in construction. Despite being widely recognized, it’s still addressed reactively—resulting in unnecessary delays, costs, and risk. While precise statistics vary, industry experts agree that moisture-related flooring failures are widespread, costing billions of dollars annually in remediation across the U.S.

The typical approach? Cure the concrete using conventional methods and hope it dries in time. When it doesn’t—which is often—the fallback is to apply moisture vapor remediation systems like 2-part epoxy remedial floor coatings or moisture vapor control sealers (e.g., SINAK VECT-R), adding significant time, labor, and material costs.

VC-5 changes that.

The Problem with Traditional Curing + Moisture Remediation

Common curing methods—such as wet curing or curing compounds—are not designed to address moisture vapor emissions and make no effort to do so. These methods focus only on surface hydration, leaving the issue of moisture vapor transmission entirely unaddressed. Contractors familiar with this process often expect moisture testing not to pass—leading to added time, cost, and complexity associated with remediation.

These remedial systems bring several challenges:

• Added costs of $1–$7+ per square foot
• Schedule delays for moisture testing, drying time, and surface prep
• Installation complexity, as many moisture vapor control products require precise surface prep, careful sequencing, and extended cure times, making them labor-intensive and slow to install
• Increased risk of failure from improper surface conditions or application
• Limited protection against liquid moisture – many only address moisture in its vapor form

Enter VC-5: Proactive Curing + Built-In Moisture Control

VC-5 is applied on the day of concrete placement and begins working immediately. Once dry—typically within 30 minutes—construction can resume. Flooring installation can begin in as little as 7 days.

By contrast, the traditional process can delay access to the slab for days due to:

• Required cure and drying time
• Moisture testing and turnaround
• Surface preparation (grinding, shot blasting, scarification)
• Application and cure of remediation systems

Altogether, this can delay flooring installation by weeks and disrupt downstream trades.

What VC-5 Delivers

VC-5 is a penetrating, spray-applied curing agent that eliminates the need for moisture remediation entirely. It:

• Promotes proper hydration and strength development
• Substantially reduces moisture vapor emissions at the source
• Replaces traditional curing compounds and post-cure mitigation products
• Comes with a written warranty against flooring, coating or roofing failure—including damage from hydrostatic and osmotic pressure

The Power of a Proactive Warranty

Unlike reactive solutions applied after issues arise, VC-5 is installed at the time of placement—and that’s when SINAK’s warranty becomes active.

• Liability transfers to SINAK before the flooring installer arrives
• Contractors, architects, and flooring trades are protected
• No guesswork or blame-shifting if moisture problems occur

This warranty simplifies responsibility and reduces project risk.

VC-5 vs. Traditional Cure + Remedial Mitigation

Validated Performance: Tested and Proven

VC-5’s performance is backed by third-party testing:

• ASTM D-3359-23 (Adhesion) – Passed: Ensures coatings and adhesives bond effectively.
• ASTM D-4263 (Moisture Presence) – Passed: Verifies effective moisture management.
• ASTM E-96 (Water Vapor Transmission) – 0.08 g/hr·m²: Extremely low transmission rate.
• ASTM F-1869 (Moisture Emission Rate) – <5 lbs/1000 SF: Within flooring system tolerances.
• ASTM F-2170 (Relative Humidity) – 100% RH covered under warranty: Even saturated slabs are protected.
• ASTM F-710-21 (Surface Readiness) – Compliant: Compatible with standard flooring systems.

Sustainability Without Compromise

VC-5 simplifies protection while supporting project sustainability. It is:

• Zero VOC
• Red List Free (Declare Label)
• UL GREENGUARD Gold Certified
• Buy American Act Compliant
• Contributes to LEED, WELL, and Living Building Challenge goals

VC-5 is also fully compatible with 1L cement, a lower-carbon alternative to traditional portland cement that is gaining traction for its sustainability benefits. 1L cement includes limestone and supplementary materials to reduce embodied carbon. While traditional curing and mitigation systems often underperform with 1L cement, VC-5 maintains consistent results—ensuring compatibility, durability, and moisture protection.

This is the bottom line: VC-5 dramatically reduces jobsite complexity and resource use. It eliminates unnecessary chemical usage, VOC emissions, water waste, and surface prep. It cuts out labor and equipment costs for testing and remediation. It allows construction to resume within 30 minutes and flooring installation in just 7 days. That means fewer delays, lower costs, and a cleaner, more predictable build process. VC-5 isn’t just better—it’s smarter.

For Contractors: Faster Projects, Fewer Headaches

Skip moisture testing and remediation. Eliminate delays. Let your teams move fast and finish strong—bringing your project in on time, under budget, and with a little extra room to breathe. All while SINAK carries the liability.

For Design Professionals: Simpler Specs, Better Results

VC-5 is classified as a Curing and Sealing Agent, Moisture Emission Reducing, Penetrating, and is designed to replace traditional curing methods while exceeding the performance of a 28-day wet cure. Because of its proactive application and lasting protection, VC-5 should be specified in Division 03 for all concrete slabs that will receive finished flooring.

Including VC-5 in Division 3 ensures early coordination between design and construction, eliminates the need for Division 9 remediation, and protects both your schedule and the owner’s investment.

Let’s Build Something Better. Ready to eliminate moisture risk from day one? Contact us or schedule a spec review today.