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Products : Thin Veneer Installation Systems : TVIS Care : TVIS™ Penetrating Masonry Sealer

TVIS™ Penetrating Masonry Sealer

Economical, easy-to-apply, penetrating sealer that resists most common oil-based and water-based stains. Unlike some sealers, it will not leave a difficult-to-remove residue on the surface. Low odor, water-based, neutral pH formula. Use as a pre-sealer before filling joints with pointing mortar for easier cleanup and to reduce cement haze on stone or veneer surface. TVIS™ No VOC (Volatile Organic Compound) formula helps provide better indoor and outdoor air quality compared to similar traditional products.

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Key Features

  • No VOC formula
  • Reduces efflorescence
  • Water-based formula


Suitable Tile Types

  • Seals manufactured stone, split brick or veneer, pointing mortar, brick, concrete, masonry and natural stone.
  • Interior or exterior use.

General Surface Prep

Surface should be clean, dry and free of waxes, coatings or finishes. Aqua Mix® Heavy-Duty Tile & Grout Cleaner will clean the surface and remove wax finishes. For new installations and best performance allow pointing mortar to cure 48 – 72 hours before application. Will not change the appearance of most surfaces. Test in a hidden area to ensure desirable results.

Health Precautions

MAY BE HARMFUL IF SWALLOWED. MAY IRRITATE EYES AND SKIN. Wear skin and eye protection. Contains potassium hydroxide and potassium methyl siliconate. If in eyes, flush with water for at least 15 minutes. If on skin, wash with soap and water. If irritation persists, seek medical attention. If swallowed, DO NOT induce vomiting. Seek medical attention. Keep out of reach of children.

Application of Product

USE CHEMICAL-RESISTANT GLOVES, such as nitrile, when handling product.

Apply liberally using a hand-pump sprayer. Allow it to penetrate for up to 5 minutes. Immediately wipe off any excess. If first coat has been absorbed, apply a second coat following the same procedure. Porous surfaces may require additional applications. Conduct a test to see if surface is completely sealed after 2 hours by applying drops of water on the surface. If it penetrates immediately, apply an additional coat. If a residue is visible on the surface after drying, remove it with water and a sponge or white polishing pad immediately after application.

Pre-Sealing/Mortar Release: Porous surfaces such as manufactured stone, split brick or veneers, can be stained by pointing mortar during installation. Sealing the surface before filling joints will make pointing mortar removal much easier. Apply one coat of sealer according to directions after manufactured stone or veneer has been bonded for a minimum of 24 hours, or apply to front face of manufactured stone or veneer before installation.

Drying Time

2 – 3 hours.

Cleaning of equipment

Clean tools and hands with soap and water immediately after use.

Product Maintenance

Properly installed product requires no special maintenance.

Ordering Information


5 gallon (18.92 L) pail

Warranty Information

Product Warranty

Custom® Building Products warrants to the original purchaser that its product shall be free from defects in material and workmanship under normal and proper usage for a period of one year following the date of original purchase. Custom's® sole liability under this warranty shall be limited to the replacement of the product. Some states, countries or territories do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty will not extend to any product which has been modified in any way or which has not been used in accordance with Custom's® printed instructions. Custom® makes no other warranties either expressed or implied. This warranty gives you specific legal rights, and you may have other rights that vary from state to state or from one country/territory to another. For details and complete warranty information, contact Custom® Building Products or visit

Coverage Chart

Size Min Coverage Max Coverage
5 Gallons (18.92 L) 4,000 sq. ft. (371.6 M²) 6,000 sq. ft. (557.4 M²)
5 Gallons (18.92 L) 1,000 sq. ft. (93 M²) 2,000 sq. ft. (186 M²)

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