Flush Doors and Blockboards
The core of block board is made from solid blocks of softwood (e.g. strips of pine wood are used). This core is sandwiched between veneers on either side. Usually a single layer of ply is used for both the front and back faces of the board. Block boards are light in weight compared to hardwood plywood or solid wood, and often used for making furniture such as long bookshelves, tables and benches, and doors. Block boards are manufactured in interior as well as exterior grade, and are suitable for all furniture applications that require longer pieces of wood that can take some weight and which will not bend in the middle.
Flush doors, as the name implies, is a popular material used for making interior and exterior doors. Flush doors are of two types:
1. Solid core flush door and
2. Hollow core flush door.
The solid core flush doors are very similar to blockboards, that have solid blocks of softwood covered on both sides by thin layers of plywood. The doors are not too heavy (so transportation during installation becomes easier), are of decent strength, and do not sag or bend easily. Most of the doors that we use for our homes are actually flush doors.
The second type, hollow core flush doors are not block boards. They do not have a solid block core and are hollow on the inside, having just a bit of supporting structure (honeycomb shaped) or having paper or particle board material on the inside. The outer layers are as usual made up of regular ply/veneer. These hollow types of flush doors are commonly used to make partitions.
The advantage of using block board doors (solid core flush doors) is that the material has good dimensional stability and stiffness, but still is lighter in weight and is cost-effective. Plywood is rarely used for doors (since it has the tendency to bend). The other option is using good quality solid wood doors, such as teak wood doors which are much better and stronger then block boards, but these are quite expensive.
We BoardsIndia, manufacture the following types of Flush Doors with Hardwood Wood Pieces and Ply Veneer Core in Moisture resistant and Waterproof Grades.
Solid Core Flush Doors - 25 mm, 30 mm and 35 mm - Single Core and Double Core
Solid Core Block Boards - 19 mm - Single Core and Double Core