What is ISO 16938‑1 – Buildings and civil engineering works about?
ISO 16938 is an international standard on building applications that discusses the determination of the staining of porous substrates by sealants used in joints for buildings and civil engineering works.
ISO 16938‑1 is the first part of ISO 16938 which specifies a method for determining the staining of porous substrates (e.g., marble, limestone, sandstone or granite) by sealants used in building construction. The method evaluates the likelihood of a sealant causing an early stain on a porous substrate due to the exudation of materials from the sealant. The outcome of the test is specific to the tested sealant and tested substrate and cannot be extrapolated to other sealant formulations or other porous substrates.
Who is ISO 16938‑1 – Buildings and civil engineering works for?
ISO 16938‑1 on building and civil engineering works are applicable to:
- Manufacturers of building applications
- Civil engineers
- Contractors
Why should you use ISO 16938‑1 – Buildings and civil engineering works?
A porous surface helps moisture to penetrate matter, which can cause different types of corrosion, e.g., corrosion under insulation. Sealants are generally used as a barrier or a means of protection. Sealants are used to exclude dust, dirt, moisture and chemicals, or to contain a liquid or gas.
ISO 16938‑1 provides guidance in the procedure to determine to stain. When the sealant is applied and cured between two pieces of the porous substrate, the test specimens are compressed and then it is subjected to heat aging and/or cold aging and/or aging in actinic radiation accelerated weathering equipment. In this manner, you can evaluate the chemical properties of the specimen and take a confident decision.
With obedience and compliance to ISO 16938‑1, you can efficiently manufacture high-quality porous substrates for buildings and civil engineering works.
What’s changed since the last update?
BS ISO 16938‑1:2019 supersedes BS ISO 16938‑1:2008, which is withdrawn. It includes:
- The title of the document has been modified
- The figures have been modified and notes were added to provide further explanation
- Figure 4 has been replaced by Table 2.
