Mark Tyrol

This article is a part of our encyclopedia, and is editable by you. Edit ➜

Mark Tyrol is an American entrepreneur. Mark started Battic Door in 2013 and is based in Foxboro, MA.[1]

Mark Tyrol, founder of Battic DoorMark Tyrol, founder of Battic Door


Battic Door


@batticdoor (100 followers)


@batticdoor (49 followers)


Early Career

No early career info added yet...

Battic Door

Mark started Battic Door in 2013. They detail the beginnings of their company in their Starter Story interview: [1]

Q: How did you get started on Battic Door?

When I purchased my first house in 2000, I had a pull-down ladder in one of the bedrooms.

When attic stairs are installed, a large hole (approximately 10 square feet) is created in your ceiling. The ceiling and insulation that were there have to be removed, leaving only a thin, unsealed, sheet of plywood.

Because your attic space is ventilated directly to the outdoors, the attic space can be very cold in the winter, and in the summer it can be very hot. And only that thin sheet of plywood is separating your conditioned house from your unconditioned attic.

You might be able to see the gaps around a ladder by turning on the attic light and shutting the attic stairway door. If you can see light coming through, it means that expensive heated and air-conditioned air is leaking out of these gaps 24-hours a day.

I realized the heating and cooling energy loss leaking through the pull-down and up into the vented attic. So I built an insulated cover out of plywood and insulation boards. It was very big and heavy but it worked, increasing the comfort of the room and reducing energy loss.

As an engineer, I began to wonder if other homes may have a similar issue. Soon, I took a part-time job to earn some extra money performing pre-purchase home inspections. Sure enough, many of the homes I inspected had energy leaking pull-down ladders.

Attics are normally well vented and get very hot in the summer and very cold in the winter. The attic access should be well sealed and insulated, just like the front door.


In fact, in 2009, Building Codes for new home construction were revised to require the attic access to be insulated and sealed. However, in nearly every case during my inspections, I was encountering a drafty leaky pull-down ladder without any seal or insulation. Even when new the ladders did not seal. In some cases, the ladder was hanging down due to weak springs, etc. and a large gap was observed.

I realized that many others could benefit from installing an insulating cover over their pull down ladders, and decided to design, manufacture and distribute one. But I had no money and no idea how to do that!

Source [1]



Contributors to this article: