Residential Roof Damage Assessment

1) Introduction
2) Presentation outline
a) Hail and Wind
b) Composition Shingles – Weathering and Hail
c) Composition Shingles – Wind and Mechanical
d) Wood Shingles/ Shakes
e) Tile Roofs
f) Repair Cost Calculations
3) Hail and wind
a) Hail frequency
b) Definition of damage
i) Functional damage
ii) Cosmetic issues
4) Important aspects of hail
a) Size
b) Shape
c) Hardness (density)
d) Fall pattern
e) Directionality
f) Collateral damage
5) Spatter marks
6) Dents in metal
7) Wind basics
a) Standard engineering conditions
b) Wind-caused damage to roofs
i) Direct
ii) Indirect
8) Recap

1) Introduction
2) Components of shingles
a) Glass-fiber mat shingles
b) Asphaltic mixture
c) Granules
3) Anomalies on shingles
a) Cupped or clawed edges
b) Craze cracks
c) Horizontal cracks
d) Splitting
e) Blisters
f) Flaking
g) Sealant spots
h) Splices
i) Marring
j) Algae
k) Lichens
l) Mechanical damage
m) Manufacturing defects
4) Specific (visual) examples
a) Cupping
b) Clawing
c) Granule loss and shrinkage of tabs
d) Open blisters
e) General granule loss
5) Hail damage to asphalt shingles
6) Recap

1) Introduction
2) Wind-caused damage to shingle roofs
3) Some hail/wind damage myths on asphalt shingle roofs
4) Types of mechanical damage
a) Unintentional
b) Intentional
5) Intentional mechanical damage to roofs
6) Examples of Intentional mechanical damage
a) Flat peen hammer impacts
b) Line of impact marks along ridge
c) Crushed granules – smeared asphalt
d) Coin marks
e) Scrape marks
7) Recap

1) Introduction
2) Shakes vs. shingles
3) Weathering
a) Butt rot
b) Cupping
c) Curled shakes
4) Characteristics of weathering-caused splits
a) Eroded holes
b) Impact-caused splits
5) Hail impacts
a) Hail-caused splits in shingles
b) Hail punctured thin area in shake
c) Hail-broken shingle
d) Offset hail-caused split
6) Some leading hail damage myths on wood roofs
7) Wind damage
a) …to hip ridge
b) …on rake
8) Mechanical damage
a) Foot-broken shake
b) Ball peen impacts on cedar shakes
9) Recap

1) Introduction
2) Clay and concrete tiles
a) Description, underlayment
b) Tile defects
c) Surface defects
d) Improper flashing
e) Poorly-drained “dead” valleys
f) Right-corner cracks in concrete tile
g) Corner cracks
3) Hail damage to tile roofs
a) Hail damage to clay tiles
b) Clay tile edges broken by hail
c) Hail damage to concrete tile
4) Some hail damage myths – tile roofs
5) Wind damage
a) Direct
b) Indirect
c) Eave tiles displaced by wind
d) Flipped tiles along eave
e) Corner tiles displaced
f) Rake tiles displaced
g) Damage from debris impact
6) Intentional mechanical damage
a) Tile nose pried by tool
b) Shifted ridge tiles
c) Foot traffic
7) Recap

1) Introduction
2) Test areas (square)
3) DURA formula
4) Possible additional costs
5) Roof damage calculation – example problem
6) Insert shingle repairs
7) Recap