SS811 Silicone Weather Proofing Sealant
SS811 Silicone Weather-Proofing Sealant is a one-component neutral curing silicone sealant with excellent adhesion, weatherability and elasticity for weather sealing in curtain wall and building facades, especially suits applications in the areas with large difference in temperature and low humidity. It easily extrudes in any weather and quickly cures at room temperature by reaction with moisture in the air to form a durable, flexible silicone rubber seal.
|Color||Black, gray, white|
|Tack free time(23°C/73°F, 50% RH)||30 minutes||ASTM C679|
|Full Adhesion||7-14 days|
|Flow, Sag or Slump||0.1 inches max||ASTM D2202|
|Working Time||10-15 minutes|
|Durometer Hardness, Shore A||40||ASTM D2240|
|Joint Movement Capability||±50%||ASTM C719|
|Specifications: Typical property data values should not be used as specifications. Assistance with specifications are available by contactingFoshan Gaojian Chemical Industry CO., LTD.|
SS811 Silicone Weather-Proofing Sealant meets or exceeds the requirements of the following specifications for one-part sealants.
SS811 Silicone Weather-Proofing Sealant is available in black, gray, white or other colors on request.
SS811 Silicone Weather-Proofing Sealant is available in 10.1 fl. oz. (300 ml) plastic caulking cartridges，16.9 fl. oz. (500 ml) foil sausage packs.
SS811 Silicone Weather-Proofing Sealant should not be used, applied or is not recommended:
JOINT DESIGNS AND DIMENSIONS
The dimensions of joints in typical construction applications change daily as a result of solar heat gain and building sway, and throughout the year due to seasonal changes. The movement in a sealant bead installed on the sun-side of a building or during the hottest portion of the day will be almost entirely in extension during the cold season or cycle; while the movement of a bead installed during the coldest condition will be almost entirely in compression during the hotter season or cycle. In addition to these above movements, the designer should consider the effect of construction tolerances in his/her project to minimize the occurrence of over-sized or under-sized joints during construction. All moving (dynamic) joints must be designed so as not to allow three-sided adhesion of the sealant to occur (reference ASTM C1193). Threesided adhesion hinders the ability of the sealant to extend and compress freely as desired and can lead to early joint failure.
When using SS811 Silicone Weather-Proofing Sealant, the designed joint width must be at least twice the total anticipated joint movement. For example, if the total anticipated movement in an expansion joint in which SS811 Silicone Weather-Proofing Sealant is to be installed is 1/4”, the designed joint width must be at least 1/2”. The designer may want to consider additional width to accommodate construction tolerances (reference ASTM C1472). Large panels or lites should allow a minimum width of 1/4” for the sealant bead, mostly to allow for a proper installation (very small/ narrow beads become difficult to install and can accommodate less movement). Glazing of plastic or larger-sized metal panels may require larger than usual joint widths due to the greater movement potential (higher coefficients of thermal expansion). Consult with GAOJIAN Technical Services for recommendations on large or unusual applications.
A thin installation of silicone sealant can better accommodate more movement than a deep installation, as the deeper bead will result in additional stress being imposed on both the sealant and the bonding surfaces during joint movement. Figure 1 illustrates the general guidelines for installation of SS811 Silicone Weather-Proofing Sealant into a typical butt joint configuration of widths up to 2”.
1.) The recommended sealant profile is an hourglass shape with the depth of the sealant over the crown of the backer rod to be no thinner than 1/8” and no thicker than 3/8”, and
2.) A minimum of 1/4” of adhesive bonding contact must be made to all surfaces to which the sealant is intended to adhere.
When used in joints exceeding 2” in width:
3.) The recommended sealant profile is an hourglass shape with the depth of the sealant over the crown of the backer rod to be no thinner than 1/4” and no thicker than 3/8”, and
4.) A minimum of 3/8” of adhesive bonding contact must be made to all surfaces to which the sealant is intended to adhere.
Joint Backer Materials
Backer materials, typically backer rod, provide the following benefits to aide in the correct application of SS811 Silicone Weather-Proofing Sealant.
1.) To control and provide the desired sealant depth.
2.) Create a formed joint cavity that allows for the desired hourglass sealant shape.
3.) Provide a firm backup which helps attain full wetting of the substrates when the sealant is tooled.
4.) Act as a bond breaker to eliminate adhesion on the backside of a joint (three-sided adhesion).
Non-gassing polyethylene, polyolefin or polyurethane foam rod is the recommended back-up material for use with SS811 Silicone Weather-Proofing Sealant. If the joint is too shallow to allow foam rod, use a polyethylene tape (as a bond breaker to eliminate three-sided adhesion). On EIFS and porous substrate applications, a closed cell backer rod is recommended (open cell backer materials absorb and hold water which can affect long-term sealant adhesion on these materials). Backer rod should be 25-25% greater (confirm with manufacturer of backer rod as to type selected) than the width of the joint, thereby providing continuous pressure against the joint walls, and expanding and contracting with the joint movement without pushing the sealant out of the joint during the compression cycle or falling away during the extension cycle. Rubber backup materials may stain the sealant and are not recommended, unless tested and verified for compatibility.
Foshan Gaojian Chemical Industry CO., LTD. will not:
Sealants may not adhere or maintain long-term adhesion to substrates if the surface is not prepared and cleaned properly before sealant application. Using proper materials and following prescribed surface preparation and cleaning procedures is vital for sealant adhesion. Foshan Gaojian Chemical Industry CO., LTD. can provide quality control information and suggestions to user upon request.
Materials(Glass, Metals, Plastics, Ceramics, etc.)
Exterior Insulation and Finish Systems (EIFS)
SS811 Silicone Weather-Proofing Sealant will bond to many clean surfaces without the aid of a primer. For difficult-to-bond substrates, the use of a primer or special surface preparation should be evaluated. An evaluation should be made for each specific application/substrate to determine quality of bond. When properly used, primers help assure strong and consistent sealant adhesion to surfaces that may be difficult to bond. Most primers are a blend of organic and inorganic chemicals, resins and solvents. Obtaining the proper materials, as well as following the prescribed procedures, is vital to ensure the successful use of primers. PRIMER APPLICATION IS NOT A SUBSTITUTE FOR SURFACE PREPARATION. Consult Foshan Gaojian Chemical Industry CO., LTD. primer datasheet(s) for specifics and recommendations for use.
Primers may contain solvents. When handling solvents, refer to manufacturer’s MSDS for information on handling, safety and personal protective equipment.
The use of masking tape is recommended where appropriate to ensure a neat job and to protect adjoining surfaces from over application of sealant. Masking tape can prevent contact of sealant with adjoining surfaces that otherwise would be permanently marred or damaged by such contact or by cleaning methods required to remove sealant systems. When tooling, use care not to spread the sealant over the face of the substrates adjacent to the joint or masking as the silicone can be extremely difficult to remove on rough or porous substrates. Do not allow masking tape to touch clean surfaces to which the silicone sealant is to adhere (adhesive on masking tape can interfere with adhesion of silicone). Masking tape should be removed immediately after tooling the sealant and before the sealant begins to skin over (tooling time).
HANDLING AND SAFETY
PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND MATERIAL SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD INFORMATION. THE MATERIAL SAFETY DATA SHEET IS AVAILABLE FROM GAOJIAN SALES APPLICATION ENGINEER, OR DISTRIBUTOR, OR BY CALLING GAOJIAN CUSTOMER SERVICE.
USABLE LIFE AND STORAGE
When stored at or below 27oC (80oF) in the original unopened containers, this product has a usable life of 9 months from the date of manufacture.
Customers considering the use of any of Foshan Gaojian Chemical Industry CO., LTD. products should consult the latest Material Safety Data Sheets and labels for product safety information. Customers must evaluate Foshan Gaojian Chemical Industry CO., LTD. products and make their own determination as to fitness of use in their particular applications. For Material Safety Data Sheets contact the Foshan Gaojian Chemical Industry CO., LTD. sales office nearest you. Customers must ensure that all applicable federal, state, and local requirements have been met before handling any of the products mentioned in the text.
LIMITED WARRANTY INFORMATION – PLEASE READ CAREFULLY
The information contained herein is offered in good faith and is believed to be accurate. However, because conditions and methods of use of our products are beyond our control, this information should not be used in substitution for customer’s tests to
ensure that Foshan Gaojian Chemical Industry CO., LTD.’s products are safe, effective, and fully satisfactory for the intended end use. Suggestions of use shall not be taken as inducements to infringe any patent.
Foshan Gaojian Chemical Industry CO., LTD.’s sole warranty is that the product will meet the Foshan Gaojian Chemical Industry CO., LTD. sales specifications in effect at the time of shipment. Your exclusive remedy for breach of such warranty is limited to refund of purchase price or replacement of any product shown to be other than as warranted.
FOSHAN GAOJIAN CHEMICAL INDUSTRY CO., LTD. SPECIFICALLY DISCLAIMS ANY OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY.
FOSHAN GAOJIAN CHEMICAL INDUSTRY CO., LTD. DISCLAIMS LIABILITY FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.