This standard prescribes the methods of test for evaluating the physical, mechanical, and durability properties of wooden flush door shutters. It is divided into 16 parts covering dimensional accuracy, structural integrity under impact/slamming, and resistance to environmental factors like moisture and glue failure.
Lays down methods for testing the strength, stability and durability of wooden flush door shutters.
Quick Reference Values
Tolerance on nominal width and height± 3 mm
Tolerance on nominal thickness± 1.2 mm
End immersion test depth150 mm
Conditioning temperature27 ± 2 °C
Conditioning relative humidity65 ± 5 %
Practical Notes
IS 4020 only outlines 'how' to test; you must refer to IS 2202 for the acceptable limits and specifications to determine if a door passes or fails.
Always ensure that door samples are properly conditioned to the specified temperature and humidity before conducting tests to avoid skewed results.
The end immersion test is critical for doors used in wet areas (like bathrooms) to ensure the bottom edge does not delaminate.