ASTM C Standard Specification for Latex Sealants. ASTM C This standard covers latex sealants used for sealing joints in building construction. The following are tests done within this standard: extrudability. Meets ASTM-C 40 Year Durability. Product Description: Paintable. SIITex 40 Siliconized Acrylic Latex Caulk is a white caulking. Mildew Resistant compound.
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Other articles in this issue: Once cured, polyurethanes have limited paintability and may react with alkyd- or oil-based paints. Norman Efros Manufacturer Profile: They are easy to gun and because they are water-based, they clean up easily. Sealant selection is very much performance-based. Answering these questions before you begin will help you select the best sealant for the job: Currently, there is no ISO standard similar to this specification.
Even if the surface degrades with heavy traffic, the compound will still maintain an effective seal. Asm it an inside or outside application?
All acrylics are paintable, and no primer is needed before application. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Selecting a sealant requires an understanding of the joint: Is this an above — or below-ground application? These are the most common in the paint industry and come in a variety of formulations that affect cost, durability and adhesion. Urethane hybrid blended acrylics are at the high end of the acrylic family in cost and performance and can often be used in a variety of applications where a silicone or polyurethane sealant may be used. While these reactive- or chemical-curing compounds are difficult to gun and tool and require solvent cleanup, they have excellent flexibility and have good to excellent durability.
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ASTM C – 05 Standard Specification for Latex Sealants
Silicones are also reactive-curing compounds, but they offer easy gunning ability. This standard does not purport to sstm all of the safety concerns, if any, associated with its use. It is informational only and not an official ashm of the standard; the full text of the standard itself must be referred to for its use and application. The inch-pound in parenthesis are provided for information purposes only.
Sealants used in commercial construction may be specified by the owner, architect or engineer; however, the contractor often has final say on brand and type. Choices must be made after considering the amount of expansion and contraction the joint will experience at the extreme temperature ranges of the area. New silicone may not stick to old silicone, so proper surface preparation is the key to successful sealant repairs where silicones c8334 been used.
ASTM C – 17 Standard Specification for Latex Sealants
Some must be applied to a primed surface, but in general they adhere well to a aztm of surfaces. How much joint movement is required? ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Many are available in colors to match substrate, eliminating the need for painting.
Asrm following are the type and grade of sealant under this specification: Typically, the higher the cost, the greater the performance you can expect.
They shrink little while curing and can withstand traffic once cured.
Link to Active This link will always route to the d834 Active version of the standard. If tests are required using substrates in addition to or other than standard, they should be so specified for testing. Sealant types Generally, caulks and sealants are members of one of the following types of chemical families. Successful gap-filling starts with selecting the right sealant for the job and continues with proper surface preparation and application.
Once cured, they are very flexible, extremely durable and resist ultraviolet light degradation. Like any family, each has strong points, weak points and idiosyncrasies that can make it a very good — or very poor — match for the job at hand. The sealant shall be composed of latex formulated with appropriate fillers, pigments, atsm chemical additives.