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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Sealant selection is very much performance-based. They are low in cost and come in a wide range of performance grades. These are the most common in the paint industry and come in a variety of formulations that affect cost, durability and adhesion.

Sealants, Caulks, Caulking Guns Selecting a sealant requires an understanding of the joint: Select the proper sealant Painters can err by selecting the wrong type of sealant or expecting too much from it. Link to Active This link will always route to the current Active version of the standard. Every manufacturer of quality products tests their products and labels the caulk tubes accordingly. Once cured, polyurethanes have limited paintability and may react with alkyd- or oil-based paints.

The following tests shall be done: Test methods relate to special standard substrates of glass, wood and aluminum. Like any c84, each has strong points, weak awtm and idiosyncrasies that can make it a very good — or very poor — match for the job at hand.

It is essential, therefore, that the type and grade be specified for proper description of a sealant. Sealants are tested to federal specifications or standards set by ASTM. All purpose sealant with average flexibility and adhesion Sealant selection is very much performance-based.


Silicones are also reactive-curing compounds, but they offer easy gunning ability. Unauthorized reproduction of any information on this site is a violation of existing copyright laws.

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. Other articles in f834 issue: Selecting a sealant requires an understanding of the joint: Is it an inside or outside application?

They tend to be more expensive than other types of sealants. They maintain their properties over a wide temperature range. How much joint movement is required? This abstract is a brief summary of the referenced standard.

It should be recognized by the user that not all sealants meeting this specification are suitable for all applications and all substrates.

Applying sealants to gaps and joints in construction projects takes more than a strong wrist and a steady hand. Some must be applied to a primed surface, but in general they adhere well to a variety of surfaces.

Successful gap-filling starts with selecting the right sealant for the job and continues with proper surface preparation and application. This specification c34 latex sealants used for sealing joints in building construction. 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.

Product Specifications

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. Many are available in colors to match substrate, eliminating the need for painting. Because they are hard to remove completely, especially on porous surfaces, repairs and future painting can be difficult. 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.


The physical properties of the sealant shall conform to the specified requirements according to type and grade. This standard does not d834 to address all of the safety concerns, if any, associated with its use. Answering these questions before you begin will help you select the best sealant for the job:. What is the ambient and surface temperature at the time of application?

ASTM C – 17 Standard Specification for Latex Sealants

Referenced Documents purchase separately The documents listed below d834 referenced within the subject standard but are not provided as part of the standard. Answering these questions before you begin will help you select the best sealant for the job: What is the substrate?

Qstm 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. New silicone may not stick to old silicone, so proper surface preparation c384 the key to successful sealant repairs where silicones have been used. Does the sealant need to be paintable or must it match the substrate? Typically, the higher the cost, the greater the performance you can expect.

All acrylics are paintable, and no primer is needed before application.