What is the standard tolerance on the nominal thickness of a flush door?

The tolerance on nominal thickness is ± 1.2 mm.

What is the minimum required thickness for the plywood face panels?

The minimum thickness for plywood face panels is 3 mm.

Which Indian Standard code dictates the testing methods for these doors?

IS 4020 covers all the physical and mechanical testing methods for flush doors.

What are the common standard thicknesses available for solid core flush doors?

Standard thicknesses include 25 mm, 30 mm, 35 mm, and 40 mm.

IS 2202 Part 2

: 1999

Wooden Flush Door Shutters (Cellular and Hollow Core Type) - Specification

CurrentFrequently UsedSpecificationBIMArchitectural · Timber and Wood

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This standard lays down the specification for solid core wooden flush door shutters with plywood face panels, covering material requirements, dimensions, construction techniques, and acceptable tolerances.

Specifies the requirements for cellular and hollow core wooden flush door shutters, including materials, construction, finish, and performance.

Quick Reference Values

tolerance on width and height± 3 mm

tolerance on thickness± 1.2 mm

minimum thickness of plywood face panel3 mm

minimum thickness of cross bands1.0 mm

moisture content of timber12 percent maximum

standard nominal thicknesses25 mm, 30 mm, 35 mm, 40 mm

Practical Notes

Ensure the adhesive grade used (BWP or MR) matches the intended environmental exposure of the door.

Testing procedures for these doors, such as the end immersion test and slamming test, are not detailed here but refer out to IS 4020.

Proper lipping is crucial to protect the core and should match the thickness of the door to prevent edge splitting and moisture ingress.