Building products that are used outdoors are subjected to varying weather conditions. ASTM has developed several standards to assess a product’s durability to such conditions. For building products manufacturers, two important standards that outline requirements for products subjected to outdoor environments include:

  • ASTM G155: Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials
  • ASTM D2565: Standard Practice for Xenon-Arc Exposure of Plastics Intended for Outdoor Applications

In order to conduct testing per the requirements in standards ASTM G155 and ASTM D2565, testing labs use specialized equipment to simulate solar radiation using xenon lamps and advanced filter systems. Specifically designed for testing products exposed to harsh weather, the equipment utilizes interchangeable glass filters that tailor the xenon light spectrum to match light conditions in the products’ end-use environment. In addition to testing direct sunlight, the equipment can also test temperature and/or moisture, which play an important role in mimicking weathering conditions.

Building products that are typically subjected to weathering tests include paints, polymers, plastics, coatings, siding/cladding, sealants, roofing, decking, railing, trims, windows, doors, and more.

Depending on the type of product being tested and its performance requirements, test specimens are exposed to weathering conditions for varying duration times. Samples are then compared to unexposed control samples to measure color changes, change in physical properties, haze, chalkiness, durability, cracking, corrosion, strength, stiffness, and other properties.

Controlled laboratory tests for accelerated weathering can offer crucial and meaningful data for building product manufacturers when making decisions about the production of materials. The data collected from these tests can assist in improving product durability, increasing product quality, or simply assuring that current manufacturing processes are competitive.

Photo provided by Atlas MTT LLC

If you are interested in finding out more about Xenon Arc Accelerated weathering tests, please click here or call our office at 574-773-7975.