Tests to evaluate the resistance of insulation and other materials to mold

16.032026

Biosourced, Durability Insulation, Insulation, Insulation Resistance, Mould, Wood

Biological tests, Insulating, Signs

Biology - Construction

Wood Construction

ASTM C1338, Book 3713, FCBA BIO M007, FCBA-CSTB moulds isolating method, NF EN 15101-1 Annex F, VDI 6022

These four methods are designed to evaluate the resistance of various insulation materials and other bio-based materials to mold growth under specific humidity and temperature conditions. At the end of the test, the manufacturer receives a recognized, accredited report assessing the resistance of its insulation product or material under specific climatic conditions.

Standard NF EN 15101, Annex F:

Test method for determining the resistance of cellulose wadding insulation to mould growth under specific climatic conditions.

Principle: Test specimens of the insulation material are exposed to mould for 4 weeks at 28°C and 95% relative humidity. A visual assessment of the development (or absence of development) of mould is carried out at the end of the test.

Standard ASTM C1338 :

A test method for determining the resistance of an insulation material to mold growth under specific climatic conditions. This test standard is one of the tests required in the field of ventilation and air conditioning (VDI 6022).

This method uses a reference material to determine whether or not the insulation material is resistant to mold. It is primarily intended for fiberglass or rock wool insulation.

Samples of insulation material are exposed to mold for 4 weeks at 30°C and 95% relative humidity. A visual assessment of mold growth is conducted at the end of the test.

FCBA-CSTB Method for Insulation and Mold :

A method for evaluating the resistance of insulation materials to mold growth under various temperature and relative humidity conditions. This method is the test required in CSTB Specification 3713 for obtaining technical approval for insulation made from animal or plant fibers. It is, however, applicable to all types of insulation (mineral, animal, plant, or mixed fibers; loose or in rolls).

Procedure: Insulation test specimens are sterilized and then exposed to mold for 4 weeks under specified temperature and humidity conditions (28°C and 85% or 95% relative humidity, or other values), depending on the intended use of the insulation.

A visual and quantitative assessment is conducted at the end of the test and compared with the number of microorganisms present on the samples at the start of the test. The material’s resistance is evaluated based on both results (visual and quantitative observations).