Author Archives: Jerry Prugar

They Don’t make ‘Em Like They Used To – Update #3 (August 21, 2012)

Posted by in Wood | August 27, 2012

We have been posting on the changes in the design values for Southern Yellow Pine.  You might recall that recent test results for the strength values of 2×4 lumber showed that the strength values for Southern Pine are about 33% lower… Read More

Shingle Damage Evaluation – Intentional Damages to Mimic Hail Damage – Part 7

Posted by in Shingles | August 20, 2012

This post is Part 7 of Shingle Damage Evaluation and follows Other Damages That May Be Mistaken for Hail Damage – Part 6d. In this post we discuss mechanical damage marks on shingles that were applied with the intention to mimic hail damage,… Read More

Shingle Damage Evaluation – Other Damages That May Be Mistaken for Hail Damage – Part 6d

Posted by in Shingles | August 13, 2012

This post is Part 6d of Shingle Damage Evaluation and follows Other Damages That May Be Mistaken for Hail Damage – Part 6c. Other Damages That May Be Mistaken For Hail Damage – Part 6, is comprised of four posts that discuss the causes… Read More

Shingle Damage Evaluation – Other Damages That May Be Mistaken for Hail Damage – Part 6c

Posted by in Shingles | August 06, 2012

This post is Part 6c of Shingle Damage Evaluation and follows Other Damages That May Be Mistaken for Hail Damage – Part 6b. Other Damages That May Be Mistaken For Hail Damage – Part 6, is comprised of four posts that discuss the causes… Read More

Shingle Damage Evaluation – Other Damages That May Be Mistaken for Hail Damage – Part 6b

Posted by in Shingles | July 30, 2012

This post is Part 6b of Shingle Damage Evaluation and follows Other Damages That May Be Mistaken for Hail Damage – Part 6a. Other Damages That May Be Mistaken For Hail Damage – Part 6, is comprised of four posts that discuss the causes… Read More

Shingle Damage Evaluation – Other Damages That May Be Mistaken for Hail Damage – Part 6a

Posted by in Shingles | July 23, 2012

This post is Part 6a of Shingle Damage Evaluation and follows Size of the Hail Stones – Part 5b. Our previous posts have already discussed the causes and characteristics of damage from normal and premature aging and the characteristics of functional hail damage.… Read More

Shingle Damage Evaluation – Size of the Hail Stones – Part 5b

Posted by in Shingles | July 16, 2012

This post is Part 5b of Shingle Damage Evaluation and follows Functional Hail Damage – Part 5a. Considering the Size, Direction, and Damage Producing Effects of the Hail Stones  The evaluation of composite asphalt shingles and other roof coverings for hail impact damage… Read More

Shingle Damage Evaluation – Functional Hail Damage – Part 5a

Posted by in Shingles | July 09, 2012

This post is Part 5a of Shingle Damage Evaluation and follows Characteristics of Aging- Part 4e. Functional Hail Damage to Composite Asphalt Shingles  Industry standards and studies have defined functional hail damage to asphalt shingle roofs as a diminution of the water shedding… Read More