Category Archives: Roof

Visible Signs of Rafter Thrust

Posted by in Roof, Wood | November 30, 2020

In common rafter framing, the rafters support the weight of the roof and snow (or live load) by pushing against the ridge board (and opposing rafters) at the top and pushing outward and downward at the tops of the supporting… Read More

Poor Handling of Roof Runoff

Posted by in Basements, Case Studies, Roof, Water Sources, Winter Concerns | October 05, 2020

Basement walls not only support the floor framing above, but also retain earth and groundwater from the basement area.  A basement wall commonly retains earth backfill and groundwater by spanning vertically between the basement floor and the wood framing above… Read More

Hail Damaged Shingles (Updated)

Posted by in Hail Damage, Roof, Shingles, Weather Events | July 13, 2020

A few years ago we took a quick look at hand torn shingles and hail damaged shingles.  Here is an update to the hail damaged shingles post. Yes, Virginia, we have found hail damage to shingles where others did not… Read More

Even a Slate Roof Can Be Damaged by Hail

Posted by in Hail Damage, Roof | June 01, 2020

Slate tile roof coverings are more expensive than common composite asphalt shingle roof coverings and for good reason: slate is more attractive (this is a personal preference), slate tiles last much longer (50-100 years or more depending on the quality… Read More

What Can We Tell From These Photos? (Case Study 19)

Posted by in Case Studies, Roof, Simple Forensic Methods, Wood | May 13, 2019

The roof surface exhibits a deep trough near scupper through which the roof drains. The roof runoff can’t drain off the roof until it fills and overflows the trough. The trough has been present for months, as evidenced by the… Read More

Leakage at the Soil Stack and a Method of Repair

Posted by in Roof, Shingles | January 21, 2019

Noticing moisture staining or peeling paint at the top of the wall above the toilet in your bathroom? Does the damage resemble the peeling paint in Figures BR-1 and BR-2 below? Lastly, does the location of the moisture staining or… Read More

Right and Wrong Ways of Siding Installation

Posted by in Roof, Shingles, Siding | January 07, 2019

There is a right way and a wrong way to do most tasks in life. This is also true when it comes to the installation of vinyl or aluminum siding on a wall above a roof slope.   It is good… Read More

Who Says, “You Need to Have a Gutter to Have Ice Damming or Icicles?”

Posted by in Attic Ventilation, Buying/Maintaining a Home, Roof, Water Sources, Winter Concerns | March 12, 2018

See those long, beautiful icicles and the ice dam? But wait – there is no gutter along the rear slope of this dwelling (see Figure 1).  How can there be an ice dam and icicles?  Just lucky, I guess. Note… Read More