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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They tend to be more expensive than other types of sealants. Once cured, polyurethanes have limited paintability and may react with alkyd- or oil-based paints.

This standard does not purport to address all of the safety concerns, if any, associated with its use. What is the substrate?

ASTM C – 17 Standard Specification for Latex Sealants

Because they are hard to remove completely, especially on porous surfaces, repairs and future painting can be difficult. It is essential, therefore, that the type and grade be specified for proper description of a sealant. 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.

Is this an above — or below-ground application?

All purpose sealant with average flexibility and adhesion Sealant selection is very much performance-based. The sealant shall be composed of latex formulated with appropriate fillers, pigments, and chemical additives. New silicone may not stick to old silicone, so v834 surface preparation is the key to successful sealant repairs where silicones have been used. Every manufacturer of quality products tests their products and labels the caulk tubes accordingly.


Some must be applied c8834 a primed surface, but in general they adhere well to a variety of surfaces. PaintPRO Archives pg 1 of 2.

Choices must be made after considering the amount c8344 expansion and contraction the joint will experience at the extreme temperature ranges of the area. This specification covers latex sealants used for sealing joints in building construction. Selecting a sealant requires an understanding of the joint: Sealant types Generally, caulks and sealants asmt members of one of the following types of chemical families.

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If tests are required using substrates in addition to or other than standard, they should be so specified for testing. This abstract is a brief summary of the referenced standard. They are easy to gun and because they are water-based, they clean up easily. Even if the surface degrades with heavy traffic, the compound will still maintain an effective seal.

ASTM C – 05 Standard Specification for Latex Sealants

They are low in cost and come in a wide range of performance grades. Sealants are tested to federal specifications or standards set by ASTM. 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. Currently, there is no ISO standard similar to this specification. 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 following tests shall be done: It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Many are available in colors to match substrate, eliminating the need for painting.

Product Specifications

The following are the type and grade of sealant under this specification: Successful gap-filling starts with selecting the right sealant for the job and continues with proper surface preparation and application.

Historical Version s – view previous versions of standard.

The inch-pound in parenthesis are provided for information purposes only. Norman Efros Manufacturer Profile: They receive different ratings based on their ability to move, flex and return asgm their original configuration. Applying sealants to gaps and joints in construction projects takes more than a strong wrist and a steady hand. All acrylics are paintable, and no primer is needed before application.

Does the sealant need to be paintable or must it match the substrate? It should be recognized by the user that not all sealants meeting this specification are suitable for all applications and all substrates.

Typically, the higher the cost, the greater the performance you can expect.