Window Drilling Guide

All of our installs usually require getting a cable from the outside to the inside of a building eventually... Drilling through the window frame or lip is the most common way to do this, as it's much easier than drilling through a thick brick wall.
This guide is intended to share knowledge and help familiarize new installers with the types of windows that are common in NYC buildings, along examples of techniques. Many installers find the idea of drilling holes in someone else's house to be daunting, so following along on installs and seeing how other lead installers do it as well it a great supplement to this guide.


Brooklyn Standard Window (Metal Frame):

We call this the Brooklyn Standard Window as it's very common in the pre/post war brownstones around Brooklyn. It can be identified by the large lip on the bottom inside of the window, they are usually metal and usually black. They also usually open at both the top and bottom.

These windows tend to have a lot of play and big tolerances in the bottom sliding pane, meaning that by drilling through the metal lip at the bottom of the window, you can pass the cable through and the window will generally still close and lock. 
The metal lip on the bottom can be drilled from both the inside or outside.

<Insert Photo of Brooklyn Standard Window here>

Below is a variation of the Brooklyn Standard Window (that's also white), this time with a piece of wooden trim on the inside. This trim prevents you from drilling from the inside out, without making a big mess of the trim. The track for this situation is drilling a horizontal hole through the metal lip from the outside in, then meeting it with a hole drilled downwards at an angle through the trim.