SEALGUARD VFI®-993 Silicone Flashing Grade

SEALGUARD VFI®-993 Silicone Flashing Grade is a high solids, 100% silicone, trowel applied flashing grade that allows for high builds in a single coat. SEALGUARD VFI-993 provides UV stability in a single component package that will cure in up to half inch thicknesses without foaming at room temperature (RTV). SEALGUARD VFI-993 has excellent flexibility and no migration of plasticizers or oils that inhibit adhesion. This flashing grade is a moisture cure specifically engineered for breathability, adhesion and is resistant to oxidation and high temperatures.

High solids silicone flashing grade that allows for high builds in areas that require a leak proof seal.

Features & Benefits

  • High Solids, 100% Silicone Elastomeric Mastic
  • High Build Cures up to ½ inch with a Single Coat
  • Superior Flexibility, Build Up, and Adhesion
  • 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

Application Methods:

  • Brush
  • Trowel

Available Packaging:

  • 5 Gallon
  • 2 Gallon
  • 1 Gallon

Product Details

  • Product Color: Standard color available is white. 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 993 Silicone Flashing is a trowel applied product.
  • 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 and standard application is up to half inch thicknesses until the desired thickness is reached. Apply only when rain or other moisture contamination will not be present before fully cured.
  • Primers: Volatile Free, Inc. recommends adhesion patch testing before use on any unknown substrate. SealGuard 993 is a highly versatile product that usually does not require a primer.
  • 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®-993 Silicone Flashing Grade Physical Properties

  • Tensile Strenth (ASTM D-412): 135 psi
  • Elongation (ASTM D-412): 300%
  • Tear Strength (ASTM D-624): 20 pli
  • Flexibility @ 15°F Mandrel (Pass/Fail): Pass
  • Reflectance (ASTM D 2824): 85
  • Accelerated Weatherability @1000hr (ASTM G 155): Pass
  • Fungi Resistance (ASTM G 21): Pass
  • Firm Set and Resistance to Water (ASTM D 2939): Pass
  • Tensile Strength (ASTM D 2370): 200 psi

SEALGUARD VFI®-993 Silicone Flashing Grade Liquid Properties

  • Solids by Weight (ASTM D 1644): 96.00%
  • Solids by Volume (ASTM D2697): 96.00%
  • Liquid Density (ASTM D 2939): 10.0 lbs/gal
  • Specific Gravity: 1.20 g/ml
  • Viscosity (ASTM D2196): >50000 cps
  • VOC: 46g/L

Systems Used In

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.

Standard Solid Silicone System

Volatile Free, Inc. provides a very functional and easy to apply standard solids silicone system. In the system we use silicone chemistry to provide a room temperature curing (RTV) silicone that creates 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® 991 Standard Solid Silicone can work both as a topcoat and a basecoat to provide consistent properties throughout and ensure proper adhesion throughout the layers. 991 standard solids silicone is recommended to be used in white but can come in other colors depending on your need or your customers need. We have excellent adhesion using the standard solid silicone, because of a solvent content that can bite into substrates to provide better adhesion. Standard silicone requires adhesion patch testing, when required we recommend #11 Epoxy primer for most substrates. The #11 epoxy primer comes in a salmon color and a convenient 5-gallon kit that allows you to mix without an additional bucket.

Hybrid Polyurethane Foam Roof System

A hybrid silicone and polyurethane roofing system is a premiere strength and energy saving system for a roof. Using our 727 polyurethane 3 PCF roofing foam provides a smooth monolithic layer that is easy to topcoat and gives the building a higher energy efficiency. The foam is then coated with 3600 polyurethane, an extremely durable basecoat, to create a tough urethane layer over the foam to prevent hail damage and leaks. The 3600 can be spray applied or rolled, depending on the speed needed or available equipment. Sealguard® 990 high solids silicone is then applied as the topcoat to provide UV stability and protection against ponding water. Using these three products as a system provides the strengths of each product and removes the weaknesses of each product. This system is best used when a premium roof system is required to stand up to UV degradation and severe hail. These products when sprayed can all be applied same day making this a quick and efficient roofing process that will provide a lasting result.



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Product Data Sheets