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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Choices must be made after considering the amount of expansion and contraction the joint will experience at the extreme temperature ranges of the area.

Sealants, Caulks, Caulking Guns – PaintPRO

Unauthorized reproduction of any information on this site is a violation of existing copyright laws. It should be recognized by the user that not all sealants meeting this specification are suitable for all applications and all substrates.

The following tests shall be done: They receive different ratings based on their ability to move, flex and return to their original zstm. Other articles in this issue: All purpose sealant with average flexibility and adhesion Sealant selection is very much performance-based. Applying sealants to gaps and joints in construction projects takes more than a strong wrist and a steady hand.

These are the most common in the paint industry and come in a variety qstm formulations that affect cost, durability and adhesion. Typically, the higher the cost, the greater the performance you can expect. Sealant types Generally, caulks and sealants are members of one of the following types of chemical families. Link to Active This link will always route to the current Active version of the standard.


Sealant selection is very much performance-based. They are easy to gun and because they are water-based, they clean up easily.

Product Specifications

How much joint movement is required? Historical Version s – view previous versions of standard. The sealant shall be composed of latex formulated with appropriate fillers, pigments, and chemical additives. Is it an inside or outside application? They maintain their properties over a wide temperature range.

Does the sealant need to be paintable or must it match c8344 substrate? Many are available in colors to match substrate, eliminating the need for painting.

Some must be applied to a primed surface, but in general they adhere well to a variety of surfaces. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Their jelly-like consistency makes them hard to tool for a nice finish, but they cure quickly and will cure at below-freezing temperatures.

ASTM C – 17 Standard Specification for Latex Sealants

Answering these questions before you begin will help you select the best sealant for the job:. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. What is the substrate?


This abstract is a brief summary of the referenced standard. New silicone may not stick to old silicone, so proper surface preparation is the key to astmm sealant repairs where silicones have been used.

This specification covers latex sealants used for sealing joints in building construction. They shrink little while curing and can withstand traffic once cured. What is the ambient and surface temperature at the time of application?

Currently, there is no ISO standard similar to this specification. If tests are required using substrates in addition to or other than standard, they should be so specified for testing. Urethane hybrid blended acrylics are asym 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.