What are the standard thicknesses for GRP doors under this standard?

The standard nominal thicknesses are 25 mm, 30 mm, and 35 mm (Clause 6.2).

What is the maximum allowed water absorption for a GRP door?

It should not exceed 2% by mass after the 2-hour end immersion test (Table 2).

What is the minimum required screw withdrawal strength?

The screw must withstand a withdrawal force of not less than 1000 N (100 kgf) (Table 2 & Clause 9.7).

How is the impact resistance tested?

A 500g steel ball is dropped from a height of 1m onto the door surface. The door should show no cracks or delamination (Clause 9.6).

IS 14856

: 2000

Glass Fibre Reinforced Plastic (GRP) Panel Type Door Shutters for Internal Use

CurrentSpecializedSpecificationBIMArchitectural · Doors, Windows and Shutter

Download PDF BIS Portal Google

This standard specifies the requirements for materials, construction, dimensions, and performance of Glass Fibre Reinforced Plastic (GRP) panel-type door shutters for internal use. It provides details on manufacturing processes and outlines performance tests such as slamming, impact, and water absorption to ensure quality and durability.

Glass Fibre Reinforced Plastic (GRP) Panel Type Door Shutters for Internal Use

Quick Reference Values

Nominal thickness of door shutter25, 30, or 35 mm

Maximum permissible water absorption (End Immersion Test)2.0 % by mass

Slamming test cycles100 cycles

Minimum screw withdrawal strength1000 N

Impact test steel ball mass500 g

Impact test drop height1.0 m

Maximum permissible warp3.0 mm

Practical Notes

GRP doors are ideal for wet areas like bathrooms and toilets due to their excellent water resistance, but screw-holding capacity should be checked for heavy hardware.

The core material (e.g., PUF, paper honeycomb, timber) significantly affects the door's weight, insulation, and cost.

This standard is for internal doors only; external doors require different specifications for UV and weather resistance.