Many homeowners worry that flush doors block airflow. In reality, flush doors do not affect ventilation when designed and installed correctly.
At Altwood, we work with flush doors, plywood, and block boards daily, and the truth is simple — airflow depends more on material stability and fitting than door style.
Flush doors have solid surfaces, which makes people assume airflow is reduced. But most airflow happens through the gap below the door, not through the door panel itself.
A flush door made from quality plywood stays straight, maintaining this gap consistently throughout the year.
Doors made with poor-quality plywood swell during monsoon and shrink in dry weather. This blocks airflow by closing the bottom gap.
Altwood uses alternate plywood, red core plywood, and pinewood block board to ensure dimensional stability.
Explore Pinewood Block Board here: https://altwood.in/pinewood-block-board/
Maintain proper bottom clearance
Choose stable plywood cores
Seal the door properly
Avoid low-grade plywood chosen only by price
Flush doors do not block ventilation. Poor materials do. With Altwood flush doors built on strong plywood and block board cores, your home stays well-ventilated and structurally sound.