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  • Color: Clear
  • Finish: Matte
  • Water-based indoor/outdoor penetrating concrete sealer
  • Cost effective, one-time-only sealer application
  • Perfect for integrally-colored concrete and polished concrete countertops
  • Excellent salt resistant, non-slip sealer option

How much do I need to penetrate and seal my concrete?

It will depend on the square footage of your application.

The coverage rate is 400 square feet per gallon. (1 coat)

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Product Details

Direct Colors Penetrating Concrete Sealer, Hardener & Densifier is a clear, odorless, VOC compliant, water-based, matte finish concrete sealer, salt protectant and dust proofer that hardens, seals and densifies concrete. Penetrating sealer is a sealant that penetrates deep into the concrete surface where it chemically reacts with the cement particles within the pores. Penetrating sealers do not create a surface film nor chang ethe color or look of the surface

Penetrating Concrete Sealer Hardener will extend the life of any exterior concrete slab by reducing spalling and other problems caused by extreme weather conditions. If desired, penetrating sealer can also be used in conjunction with an acrylic for a gloss finish.

Our sealer provides all the protection of a high-end penetrating water repellant sealer and offers all the benefits of a surface hardener, sealer, and densifier. This product penetrates and seals by reacting chemically with the concrete surface forming a clear, dense and durable inorganic topical surface layer that is breathable, abrasion-resistant, and hydrophobic.

  • Most durable sealer for indoor or outdoor concrete
  • Matte finish concrete sealer
  • Water-based indoor/outdoor penetrating concrete sealer
  • Cost effective, one-time-only sealer application
  • Coverage rate approximately 400 sq. ft. per gallon for smooth concrete.
  • Perfect for integrally-colored concrete and polished concrete countertops
  • Excellent salt resistant, non-slip sealer option
  • VOC compliant in all 50 states

How To Apply Penetrating Concrete Sealer

• Apply the Penetrating Concrete Sealer, with a pump up sprayer. Spray enough to create/maintain a uniformly damp surface for 20 minutes. Apply more sealer only to areas that appear more dry or absorptive than others. No membrane should be forming on the surface.
• Squeegee away any excess sealer remaining on surface. Do not allow sealer to pool anywhere on the concrete.
• Allow to dry for 24 hours and begin polishing from 400-grit up to 3000-grit. consider repeating this step to be absolutely certain all concrete acid stain has been neutralized before cleaning.


Click/Tap each question to hide/show the answers.

What sealer do you recommend for birdbath interior? I used to buy Ionic penetrating type sealer from you but I don't see it listed like that anymore.

The Ionic is now labeled as Penetrating Sealer but it’s the exact same product.

How-To Guide

Printable Penetrating Sealer How-To Guide

Step 1: Preparation

  • Cover areas at risk of over-spray with plastic drop cloth.
  • Newly poured concrete must cure for 30 days before application.
  • For existing concrete:
    • Remove paint or previously applied sealer using Soy Gel Stripper.
    • Remove carpet glue or other adhesives using Bean-E-Doo® Mastic Remover.
    • Remove any oils, dirt, debris, Soy Gel Stripper, or Bean-E-Doo® Mastic Remover using scrub brush and ProClean Degreaser™.
  • Verify absorption by pouring a cup of water in various areas. If not absorbed within five minutes, etch the surface with CitrusEtch™, then neutralize surface with ProClean Neutralizer™ and rinse thoroughly.
  • Allow the concrete to thoroughly dry before application.

Step 2: Application

Coverage rate is approximately 200 square feet per gallon. Coverage rates may vary based on concrete texture, surface porosity, and application method.

NOTE: Only apply Penetrating Sealer when surface temperature is between 40°F (4°C) and 95°F (35°C).

Caution: May be harmful if swallowed or ingested. Contact with skin can cause mild irritation. Avoid contact with eyes.


  • Remove all filters from pump-up sprayer.
  • Pour Penetrating Sealer into pump-up sprayer.
  • Spray a saturating coat of Penetrating Sealer on surface in slightly circular motions with irregular overlaps.
  • Keep surface wet with Penetrating Sealer for at least 20 minutes (spray more as needed).
    • As Penetrating Sealer cures, remove any excess on top of surface with a scrub brush or squeegee trowel.


  • 24 hours before foot traffic or placing heavy furniture
  • 48 hours before driving over surface or allowing parked vehicles

Pro Tips:

  • As Penetrating Sealer cures, a light lithium residue may form on the surface. This means excess Penetrating Sealer was not absorbed and should be removed with a stiff broom or swing buffer with a red or white pad.
  • Penetrating Sealer will not bridge or fill cracks and will not salvage honeycombed or structurally unsound surfaces.
  • To avoid droplets dripping onto surface: before releasing sprayer trigger, immediately place tip in a bucket


  • Clean tools and supplies with ProClean Degreaser™ and warm water

Tools & Supplies:

  • Pump-up sprayer
  • Plastic drop cloth
  • Scrub brush
  • Squeegee trowel
  • Spiked shoes (if using CitrusEtch™)

Disclaimer: Direct Colors does not warranty or guarantee results (outcomes). Concrete variations or improper application may cause unintended results. Test product on an inconspicuous or small area and allow to fully cure to ensure compatibility and desired result.

Data Sheets

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