This is how NOT to fasten common asphalt shingles: With a nail driven at an angle, thus, reducing the pull through strength and causing a hump that lifts the overlying tab. With nails over driven so that they are cutting… Read More
Archives by Month: June 2019
You Can’t Do THAT
We have been told by some masons that a new concrete block wall can’t be toothed into an existing concrete block wall. Well…… Yes and No. Apparently, it can be done, as shown in Figure 1. However, since the new… Read More