Concrete is one of the strongest building materials used today. It is used in driveways, sidewalks, buildings, and large construction projects. But many people don’t realize something important about concrete.
Concrete needs to breathe.
Even after concrete dries and hardens, it still has tiny pores and spaces inside it. These small openings allow moisture to move through the concrete. Because of this, sealing concrete the wrong way can cause problems.
That is why many contractors and builders rely on breathable sealers like Deco 20 Clear Penetrating Sealer, which protect the surface while still allowing moisture vapor to escape.
Understanding how concrete works is important for anyone in the construction and building industry. Choosing the right sealer can make the difference between long-term protection and early coating failure.
Concrete Is Full of Tiny Pores
Concrete may look solid, but it actually contains thousands of tiny pores. These pores form when the concrete cures and hardens.
Through these pores, moisture can move through the slab. Water vapor from the ground can slowly rise upward, and the concrete releases that vapor into the air.
This movement is called vapor transmission.
Even when a concrete surface looks dry, moisture may still be moving through it. This is completely normal and part of how concrete behaves.
Because of this, concrete needs protection that works with the material, not against it.
What Happens When Concrete Cannot Breathe?
If a heavy coating blocks moisture from escaping, problems can develop under the surface.
When moisture vapor becomes trapped, pressure builds beneath the coating. Over time, that pressure can cause the sealer to fail.
Common problems include hazing, bubbling, and peeling of the coating. In some cases, white mineral deposits known as efflorescence may appear.
These failures are not always caused by the product itself. Often they happen because the coating does not allow the concrete to release moisture naturally.
What Makes a Sealer Breathable?
Breathable sealers work differently than thick surface coatings.
Instead of forming a heavy film on top of the concrete, penetrating sealers soak into the pores of the surface. Once inside the concrete, they create protection from within.
This helps the surface resist water and stains while still allowing moisture vapor to move through the slab.
Products like Deco 20 Clear Penetrating Sealer are designed with this balance in mind—protecting the concrete while allowing it to function the way it was designed.
Why Breathability Matters in Construction
In the construction and building industry, long-term durability matters. When concrete coatings fail, repairs can be expensive and time-consuming.
Trapped moisture can force contractors to strip coatings, reprepare surfaces, and reseal the concrete. This adds labor costs and delays to projects.
Breathable sealers help reduce these risks by allowing moisture vapor to escape while still protecting the surface from outside water intrusion.
For builders, contractors, and applicators, this can mean better performance and longer-lasting protection.
A Smarter Approach to Concrete Protection
Concrete is constantly interacting with its environment. Moisture moves through the slab as temperatures, humidity, and ground conditions change.
The best sealing systems recognize this natural process.
By allowing vapor to escape while protecting the surface from water penetration, breathable sealers provide a more balanced approach to concrete protection.
When the right sealer is used, the concrete can continue to perform as it was designed while staying protected from damage.
Partner With a Manufacturer Who Understands Concrete
For more than 30 years, Deco Products has worked with contractors, applicators, and builders to develop sealing systems designed for real-world conditions. Our breathable concrete sealers are engineered to protect surfaces while allowing moisture vapor to escape—helping reduce coating failures and improve long-term performance.
If you are looking to add concrete or paver sealing to your service offerings, or if you want to learn more about breathable waterproofing systems, the team at Deco Products is here to help.
We provide manufacturer support, product guidance, and free training to help contractors apply our products with confidence.
Learn more about our sealing systems and training opportunities by call us at 800-500-DECO (3326) and see how the right breathable sealer can make a difference on your next project.
