Types of Flush Doors Used In Buildings

Doors are an essential requirement and element in every home. They should be visually appealing and have features such as durability, strength, water, and heat resistance, and they should not warp over time. In this article, we will discuss different types of flush doors used in buildings.

What Is Flush Door?

Flush doors are streamlined interior and exterior doors with plain facings on both sides. While this type of door is more closely associated with function than style, it lends itself well to various room designs that highlight other elements in the space.

This type of door could have a solid or hollow core. A typical flush door has two plywood pieces attached to each side of a frame.

Even though the interior of the door is hollow, it is not uncommon for some form of support, such as a honeycomb support system, to connect to the frame.


The plywood can be stained or finished to highlight the wood grain. Following the completion of the door construction, the finish is a seal to prevent damage to the color or stain.

These doors can be used in residential and public buildings. This door is ideal for areas with a requirement for light and cross ventilation in the rooms.

Types Of Flush Doors

1. Solid Core Flush Door

The solid core flush door is trendy, and it is also known as a laminated flush door. These panels are particleboard, laminated core, cross-band, face wood veneer, blackboard, and other materials.

These doors should have stiles, top, and bottom rails, and be at least 5 – 10 cm wide. This type of door also has sound-insulating properties. 

Solid Core Flush Door

These doors have a timber wood frame, and hardwood polishing is applied around the framing to increase the strength and durability of the door.

Solid-core flush doors prepare by pressing flat papers and resins that cover the door’s surface and are reinforced by kiln-seasoned, composite solid fillers that fit tightly within the door.

These rectangular wood fillers or blocks lack interstitial space for water storage. Because laminates are artificial materials, decorative patterns or colors can create on the door’s surface, and their durability ensures that the doors last a long time. 

The width of the wood polishing should be equal to the core thickness. These are stronger and more stable due to their increased strength and stability.

Advantages Of Solid Core Flush Doors

  • Any changes in the environment do not affect solid-core flush doors.
  • These doors are environmentally friendly, waterproof, and have good sound insulators.
  • These doors are dimensionally accurate and stable.
  • These doors are more durable and have a higher screw holding capacity.
  • Because these doors can easily be cleaned, they require little maintenance.
  • These doors are of the highest quality and will last for a long time.

2. Hollow Core Flush Doors

Hollow-core flush doors are hollow inside but have a honeycomb-based supporting structure. The top, bottom, and intermediate rails should be 7.5cm wide.

The frame comprises stiles, top, intermediate, and bottom rails, and wooden battens attached to the rails to cover spaces/gaps between stiles and rails.

This door’s plywood thickness should always be greater than 6 mm. Plywood sheets and face veneers bonded to the core under pressure.

These doors are lighter than other types, but they are not as strong as solid core flush doors. On the market, hollow-core flush doors cost between Rs- 180 and 200 per square foot.

Hollow Core Flush Doors

Advantages Of Hollow Core Flush Doors

  • Hollow-core flush doors are lightweight, making them easy to handle and outfit.
  • This door’s surface is resistant to stains, scratches, and collisions.
  • These doors can be customized to any shape and are simple to install.
  • These doors are available in a variety of designs and decorative finishes.
  • It is easy to make and inexpensive.

3. Cellular Core Flush Doors

The cellular core flush door frame is made from plywood battens that are at least 25mm wide and are screwed together. Pressure is applied to plywood sheets and facing veneers on both sides of the core to create the shutter.

The thickness of the plywood sheet in this type of door must always be greater than 3mm. Because they have been chemically treated and vacuum-pressed, these doors are heat and water-resistant.  

Cellular Core Flush Doors

Advantages Of Cellular Core Flush Doors

☛ Cellular core doors have a locked area on both sides for easy installation.

☛ These doors allow homeowners to customize the doors based on their needs and preferences.

☛ These doors have a pleasing, warm, and traditional appearance.

☛ This door requires less upkeep.


Flush doors are an obvious choice in certain conditions. They’re inexpensive, perform admirably, and have a pleasing aesthetic that will work well in public buildings, offices, and modern homes.

Also Read

Types Of Doors Used In Building
Standard Size Of Doors & Frames
Types Of Windows Used In Building
Standard Sizes Of Windows For Homes

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