House Shopping 101: “Don’t worry, the City inspected it.” #4: Window Misfits

By Keith Tripp, September 2018

This is the fourth in a series on construction defects found in the Greater Toronto Area, Ontario, Canada.

4 window gapThe photo shows a significant gap between the window sill and window frame. The gap is about 25mm.

The gap has not been sealed because it is too large for sealant, even with the use of backer rod. All the other windows on the house were sealed. The contractor applying the sealant (“caulking”) would simply have left this gap because it is not his responsibility to compensate for dimensional errors. Note that the EIFS has been sealed at the sill.





4b window gapThe gap could be filled with additional material such as wood or vinyl or metal. The root problem however, is that the size of the window and the size of the opening do not match. There is a dimensional error. The correct fix is to install a window that matches the size of the opening.

This is brand new construction in Oakville, completed in 2018. The homeowner now must pursue the builder through the Tarion warranty program to get this made right. This type of defect may or may not be easy to find depending on location. In this case the window was at the first storey and the gap was visible at ground level. I found the issue in the first few minutes of the inspection




4c window gapThe photo at left shows a similar gap, this time above a window. This is from a resale inspection in 2016, on a house that was built 27 years earlier in 1989 in Markham. Because of the layout of the house and slope of the ground, this was not readily visible to the homeowner. I spotted it in the first few minutes of the inspection when viewing the house from a distance.





4d window gapIt’s a common sounding from the selling parties on new or almost new homes. Especially those built without Tarion warranty. “Don’t worry, the City inspected it”. As an inspector serving the buying community, I am often amused by that statement. My income on new and nearly new home inspections relies directly on identifying the leftover issues after all the builder and municipal inspections are complete and the first owner has taken possession. These issues don’t go away on their own, and I also find “builder issues” on resale homes, even up to 50 years after original construction.

Don’t hesitate to have new or nearly-new homes inspected by a professional.

The risk with gaps in the building envelope is that water entry may have occurred. The challenge on this repair is to get the proper fix, which is a properly sized window. There is a risk the builder will use makeshift measures to seal the gap.

Keith Tripp lives, works and plays in Toronto, Ontario, Canada.