ASTM C834 PDF

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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If tests are required using substrates in addition to or other than standard, they should be so specified for testing. It should be recognized by the user that not all sealants meeting this specification are suitable for all applications and all substrates. New silicone may not stick to old silicone, so proper surface preparation is the key to successful sealant repairs where silicones have been used. PaintPRO Archives pg 1 of 2. Sealant types Generally, caulks and sealants are members of one of the following types of chemical families.

They tend to be more expensive than other types of sealants. All purpose sealant with average flexibility and adhesion Sealant selection is very much performance-based.

ASTM C – 05 Standard Specification for Latex Sealants

Their jelly-like consistency makes them hard to tool for a nice finish, but they cure quickly and will cure at below-freezing temperatures. Once cured, polyurethanes have limited paintability and may react with alkyd- or oil-based paints.

Successful gap-filling starts with selecting the right sealant for the job and continues with proper surface preparation and application. Norman Efros Manufacturer Profile: Answering these questions before you begin aetm help you select the best sealant for the job:.

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It is essential, therefore, that the type and grade be specified for proper description of a sealant. ASTM does not give any warranty asym or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

The following tests shall be done: What is the substrate?

Product Specifications

Many ashm available in colors to match substrate, eliminating the need for painting. Applying sealants to x834 and joints in construction projects takes more than a strong wrist and a steady hand. The inch-pound in parenthesis are provided for information purposes only. The sealant shall be composed of latex formulated with appropriate fillers, zstm, and chemical additives.

Select the proper sealant Painters can err by selecting the wrong type of sealant or expecting too much from it. Answering these questions before you begin will help you c8834 the best sealant for the job: The following are the type and grade of sealant under this specification: Does the sealant need to be paintable or must it match the substrate?

These are the most common in the paint industry and come in a variety of formulations that affect cost, durability and adhesion. Selecting a sealant requires an understanding of the joint: Sealant selection is very much performance-based. Silicones are also reactive-curing compounds, but they offer easy gunning ability. Typically, the higher the cost, the greater the performance you can expect. They are low in cost and come in a wide range of performance grades.

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Is this an above — or below-ground application?

Even if the surface degrades with heavy traffic, the compound will still maintain an effective seal. They are easy to gun and because they are water-based, they clean up easily. This specification covers latex sealants used for sealing joints in building construction. The physical properties of the sealant shall conform to the specified requirements according to type and grade.

Unauthorized reproduction of any information on this site is a violation of existing copyright laws. Currently, there is no ISO standard similar to this specification. Sealants, Caulks, Caulking Guns Selecting a sealant requires an understanding of the joint: They maintain their properties over a wide temperature range. Choices must be made after considering the amount of expansion and v834 the joint will experience at the extreme temperature ranges of the area.

Because they are hard to remove completely, especially on porous surfaces, repairs and future painting can be difficult. It is informational only and not an official part of the standard; the full text of the standard axtm must be referred to for its use and application.