BS EN ISO 3248:2016

What is ISO 3248 - effect of heat on paint standard about?

Two of the most important factors affecting how paint dries are temperature and humidity. Knowing how to avoid adverse environmental extremes can help you avoid painting problems. When the temperature is hot, the surface of the paint can skin over before the lower layers have a chance to dry. Alternatively, when the products applied in excessively hot temperatures dry too quickly they can often develop bumps, blisters and other imperfections, such as lifting, cracking, or discoloration.

ISO 3248 specifies a method for determining the resistance of single coatings or multi-coat systems of paints, varnishes or related products to changes in gloss and/or colour, blistering, cracking and/or detachment from the substrate under conditions of a specified temperature. ISO 3248 is applicable to products intended for use on domestic radiators or other articles likely to be subjected to similar temperatures.

Who is ISO 3248 - effect of heat on paint standard for?

ISO 3248 on effect of heat on paint standard is useful for:

• Manufacturers of paints and varnishes
• Product development teams
• Quality control teams

Why should you use ISO 3248 - effect of heat on paint standard?

Paint is not just a decorative layer, but often it is a protective layer and any defect on a protective layer caused by temperature change or other environmental factors will raise concern. Some paints tend to become extra dry and crack or peel off when exposed to the heat. Paint applied to certain products and certain areas need to have a higher resistance to heat.

ISO 3248 provides you with guidelines on test panels in terms of substrate, preparation and coating, drying and conditioning as well as thickness of coating. In addition ISO 3248 also gives you details on the temperature and duration of test as well as determination of results.

Using ISO 3248 guidelines, you can determine the resistance of paints, varnishes and other related products to changes in gloss and/or colour, blistering, cracking and/or detachment from the substrate under conditions of a specified temperature. ISO 3248 guidelines enable you to provide your customers with suitable, reliable and high-quality coatings.

What’s changed since the last update?

BS EN ISO 3248:2016 supersedes BS EN ISO 3248:2001. BS EN ISO 3248:2016 includes some technical changes with respect to BS EN ISO 3248:2001. These include:

• Cooling down of the test panels after the test has been changed from standard temperature to ambient temperature
• A principle clause has been added
• The normative references have been updated
• The supplementary test conditions previously in Annex A have been integrated in the test report