SEALGUARD VFI®-990 High Solids Silicone

SEALGUARD VFI®-990 High Solids Silicone liquid applied coating forms a seamless film using silicone chemistry. SEALGUARD VFI-990 provides UV stability and a waterproofing membrane in a single component package that cures at room temperature (RTV) and may be applied on site. SEALGUARD VFI-990 is a moisture cure elastomer specifically engineered for breathability and waterproofing that is resistant to oxidation and high temperatures.

High solids liquid applied roof coating that forms a seamless film using silicone. It provides a UV stable and waterproof membrane.

Features & Benefits

  • High Solids, 100% Silicone Elastomeric Coating
  • Seamless Liquid Applied Film with UV Stability
  • Superior Brightness for Maximum UV Reflectivity
  • Withstands Indefinite Exposure to Ponding Water
  • Excellent Adhesion to Wide Variety of Substrates
  • Resistant to Oxidation and High Temperatures
  • Lower VOC Compliant Content Measuring <50 g/L
  • Exceptional Durability from a Trusted Manufacturer
  • Formulated for Use Over: Metal, Mod/Bit, BUR, Single-Ply, Concrete, Spray Foam
  • Available in Standard and Premium Color Options

Application Methods:

  • Spray
  • Brush
  • Roll

Available Packaging:

  • Tote
  • Drum
  • 5 Gallon

Product Details

  • Product Color: Standard Colors available are white, ligh gray, medium gray and tan. For additional premium colors or color matching services contact Volatile Free, Inc.
  • UV Stability: This product is UV color stable and has long-term UV testing. For additional information contact Volatile Free, Inc.
  • Coverage/Thickness Requirement: See VFI specifications for specific coverage information or contact Volatile Free, Inc. for additional coverage/thickness requirements.
  • Storage Stability/Shelf Life: 12-month shelf life from date of manufacture when stored and sealed in unopened containers between 40°F - 75°F. Opened containers may be resealed with a nitrogen purge, but shelf life will be significantly shortened. Material should be brought to a minimum temperature of 65°F before use.
  • Equipment: SealGuard 990 Silicone may be applied by sprayer, roller, or brush. If sprayed use single component spray equipment capable of maintaining a minimum constant spray pressure of 5000 psi. 5:1 transfer pump should be used with drums. Contact Volatile Free, Inc. for more information on any specific equipment questions and requirements.
  • Surface Preparation: Surface preparation depends on application and substrate being coated. All surfaces should be cleaned, prepped and free of any oils, dirt or films that could affect the product adhesion. Contact Volatile Free Inc. with any additional questions.
  • Mixing: Mixing until uniform is required on all material before use. Mix times may vary depending on volume and mixing method, please contact Volatile Free, Inc. for more information on any specific mixing questions and requirements.
  • Material Application: Material can be applied between 40°F - 120°F. Standard application is a multiple coat method with 22 mil passes until the desired thickness is reached. Apply only when rain or other moisture contamination will not be present before fully cured. The time between subsequent coats should not exceed 48 hours, but materials should be allowed to cure before applying the second coat. Material cure time will vary with temperature.
  • Primers: Volatile Free, Inc. recommends adhesion patch testing before use and additional adhesion patch testing with the chosen primer. The following are approved primers for use with SealGuard 990. Contact Volatile Free, Inc. with any primer questions.
    • VFI-#11
    • VFI-3218
  • Cleanup: Preferred clean-up solvent is chemically dry mineral spirits. Please contact Volatile Free, Inc. for more information on clean-up of equipment and tools.
  • Thinning: Do not thin prior to application.
  • Precautions: See Safety Data Sheet for complete safety data. Do not add any foreign material to this product. Avoid prolonged breathing of vapors and prolonged or repeated skin contact. Use only with adequate ventilation.

SEALGUARD VFI®-990 High Solids Silicone Physical Properties

  • Tensile Strenth (ASTM D-412): 426 psi
  • Elongation (ASTM D-412): 230%
  • Final Elongation after 5000 hours (ASTM D-412): 187%
  • Tear Strength (ASTM D-624): 29 pli
  • Aged Solar Reflectance of White (ASTM C-1549): 0.68
  • Aged Thermal Emittance of White (ASTM C-1371): 0.9
  • Permeance (ASTM E96 Procedure B): 8.8 perm
  • Low Temperature Flexibility (ASTM D522 Method B): Pass

SEALGUARD VFI®-990 High Solids Silicone Liquid Properties

  • Solids by Weight (ASTM D 1644): 96.00%
  • Solids by Volume (ASTM D2697): 96.00%
  • Liquid Density (ASTM D 2939): 11.26 lbs/gal
  • Specific Gravity: 1.24 g/mL
  • Viscosity (ASTM D2196): 5000 cps
  • Tack Free Time: 1-2 hours @75°F, 50%
  • Cure Time: 2-4 hours @75°F, 50%
  • Recoat Time: 4-48 hours @75°F, 50%
  • Flash Point (ASTM D-56): 187°F
  • VOC: 46 g/L

Systems Used In

Hybrid Polyurethane Foam Roof System

A hybrid silicone and polyurethane roofing system with insulating foam is a premier strength and energy saving system for a roof. The spray polyurethane foam is extremely energy efficient which delivers cost savings in the form of decreased energy costs. There is also a “green” benefit associated with silicone/foam systems as they replace the need to “tear off” an existing roof that is not only costly but poses environmental risks with landfill disposal. Volatile Free, Inc. manufactures VFI®-727 HFC Spray Polyurethane Foam that provides a smooth monolithic layer that is easy to topcoat. The 3 PCF spray polyurethane roofing foam provides the necessary strength to walk on, while still maintaining a high R value for insulation. VFI®-3600F Fast Polyurethane Base Coat provides strength and puncture resistance from hail to form a high tensile, highly flexible urethane basecoat. The recommended topcoat is VFI®-990 High Solids Silicone to provide exceptional UV properties, resistance to ponding water, and a room temperature cure (RTV) for use with strict VOC limitations. The Hybrid Polyurethane Foam Roof System provides the necessary attributes to make an energy efficient, leak proof membrane that offers immediate, long-term savings.

Silicone Polyurethane Foam Roof System

A silicone and foam roofing system is an extremely energy efficient and green system as it provides cost savings to the owner in the form of decreasing energy costs and does not require a roof tear off. Our polyurethane roofing foam is a spray applied 3 PCF foam that provides a smooth monolithic layer that is easy to topcoat. A PCF foam provides the necessary strength to walk on, while still maintaining a high R value for insulation. Our recommended topcoat is one of our silicone products either our standard solids silicone when you want to roll on the coating for an extremely smooth even finish or our high solids silicone when you have VOC limitations and you are spraying the product. Both silicones provide exceptional UV properties, resistance to ponding water and a room temperature cure (RTV). The silicone polyurethane foam roof system provides the necessary attributes to make an energy efficient leak proof membrane that can save money immediately and long term.

High Solids Silicone Roof System

Volatile Free, Inc. provides a very functional and easy to apply Low VOC High Solids Silicone Roof System. In this system we use silicone chemistry to provide a room temperature curing (RTV) silicone creating a monolithic membrane on a roof to prevent leaks and UV degradation, and in combination with a primer provides excellent adhesion. Silicone is a premiere roofing product, because of the ability to resist ponding water and any standing water. Our Sealguard® 990 High Solid Silicone can work both as a topcoat and a basecoat to provide consistent properties throughout and insure proper adhesion throughout the layers. 990 high solid silicone is recommended to be used in white but can come in other colors depending on your need or your customers’ need. Although we have excellent adhesion to most substrates with our High Solid Silicone, we recommend the use of a primer for most application to insure proper adhesion. #11 Epoxy primer is our general recommendations for most substrates, and it comes in a salmon color and a convenient 5 gallon kit that allows you to mix without an additional bucket.



Above Grade Waterproofing

Above grade waterproofing is a massive industry that focuses on both commercial and residential segments and we have strived to provide chemical options for both...

Learn More

Liquid Applied Roofing

Leaky roofs cause expensive, time intensive, and intrusive work that affects the life of a building and the activity within. Several permanent solutions exist to...

Learn More

Recreational Coatings

Polyurea and polyurea hybrid coatings have long been used with industrial and commercial applications to provide unparalleled protection. Volatile Free, Inc. can provide these same...

Learn More

Sacrificial Coatings

Sacrificial coatings are frequently used in anything from marine applications to aerospace technology. They are usually used in environments where suitable protection is either too...

Learn More


Product Data Sheets