Roofing System -Part #3 - Allsafe Home Inspection Service, Inc.

476

6.04(1)(a)2. The Inspector shall Ob Observe bserve
the exposed roof drainage system.
6.04(1)(b)2. The Inspector shall Identify dentify the
roof drainage system, Gutters, Leaders,
Downspouts
Oth Other) )
(Aluminum, Copper, Wood, Vinyl,
eport On
66.04(1)(c)2. 04(1)(c)2 The Inspector shall Report
exposed roof drainage systems.
477

Gutters & Downspouts
are important because:
They control roof drainage
They prevent paint failure
They prevent decay
Th They prevent t soil il erosion i
They prevent wet basements
478

Typical gutter / downspout problems
Gutters:
D Downspouts: t
Missing
Clogged
Loose
Leaks at seams
Leaks at ends
Damaged
Decayed
Clogged
Rusted
Improper pitch
Spill over
Spill behind
Missing
Clogged
LLoose
Leaks
Damaged
Rusted out
Disconnected
Crushed
Obstructed
Discharge near
foundation
479

ROOF DRAINAGE?
Report on missing gutters as they cause wood to decay,
finish failure, failure erosion and wet basement problems
problems.
480

Compliments of the ASHI Reporter,
October 2004 by Don Lovering
1” of slope for every 16
feet of gutter
481

Compliments of the ASHI Reporter,
October 2004 by Don Lovering
482

Compliments of the ASHI Reporter,
October 2004 by Don Lovering
483

DECAYED WOOD
GUTTER - REPORT IT!
484

Wood ood Gutters need to be cleaned
and treated with boiled linseed oil
Historically a popular choice prior to 1960 1960.
Typicallyavailableina4by6inchesinclearfir.
The interior leg of a gutter should be 1 /8 to 1/4 inch
hi higher h th than th the outside t id lleg iin order d tto spill ill water t
outward.
485

WOOD GUTTER - DECAY @ RAKE BOARD –
MISSING DRIP EDGE FLASHING
486

LEAK AT GUTTER SEAM
487

YANKEE INGENUITY
488

Identify COPPER
489

COPPER
490

COPPER GUTTER & DOWNSPOUT PARTS
491

ALUMINUM GUTTERS
492

Talk “tech” but know your Client!
493

494

IF THE GUTTER IS IMPROPERLY PITCHED, WHAT
HAPPENS TO THE WATER IN THE WINTER?
495

REPORT DAMAGE
496

497

RReportt l loose gutters tt
498

IS THIS PROPER?
499

Dope Slap!
500

Identify Galvanized Steel
Gutters and Downspouts
Downspouts,
most are fully depreciated.
501

Galvanized Steel Gutters
502

Identifyy vinyl y gutters g
• Color coordinated
• Snap together
• Easy for do-it-yourselfers
• Durable
• Don’t place a ladder against one
503

Galvanized
downspout
INSIDE CORNERS DECAY FROM
ROOF DRAINAGE SYSTEM PROBLEMS
504

Leaf Guard
505

H How Gutter G tt HHelmet® l t® WWorks k
The secret is surface tension. You can
see surface tension at work when you
hold a water glass sideways under a
running faucet; the water does not run
off the glass, but flows all around the
outside. t id
In the same manner, water running off
of your y roof clings g to your y Gutter
Helmet, travels around its curved nose,
and then flows smoothly into your
gutters. Leaves, pine needles, and
other debris debris, however however, fall to the
ground below. Your gutters stay clear,
and you keep your feet on the ground.
506

507

Deicing cable systems can prevent ice damming on roof
and in gutters and help with icicles on covered gutter
systems systems.
Deicing cables maintain a pathway for melting water to
exit the roof and drain through the gutter system.
Deicing cables may cause a ice dam higher on the roof.
508

A downspout is a vertical pipe
used to drain rainwater from a roof.
509

INTERIOR DOWNSPOUT DRAINS
Why disconnect?
During a heavy storm, each downspout can deliver 12 gallons
a minute to the sewer system, which can contribute to
basement backups and sewer overflows.
Disconnecting an interior drained downspout, can make a
difference in keeping excess water out of the sewer system system.
510

DISCLAIM UNDERGROUND DRAINS
EXPLAIN WHAT A DRYWELL IS
511

512

Downspouts can
cause soil erosion
513

WHY IS THIS DOWNSPOUT
DISCHARGE A PROBLEM?
PROBLEM?
514

515

The freeze, crack or block drainage
516

517

Study this picture!
518

Why is it critical that this roof drain be
maintained in a functional condition?
519

Can you give an example of when a
gutter might be a safety hazard?
C Can you give i an example l of f when h a
downspout might be a safety hazard?
520

SKYLIGHTS
521

THE INSPECTOR SHALL
REPORT ON THE SKYLIGHTS
What do you REPORT if you don’t
go on th the roof?
f?
522

TYPES OF SKYLIGHTS:
Flat & fixed or
openable
Pyramid skylight
Dome skylight Tubular skylight
523

524

525

Cross Section
526

Ready for the step flashings
527

528

What will you Report Report ?
529

What will you Report ?
530

WHAT FIELD PROCEDURES DO YOU FOLLOW?
531

What will you Report Report ?
532

Failed seals
are re common
533

What will you Report Report ?
534

SKYLIGHT
FLASHING
535

Crazing Cracks
This type of skylight of prone to
develop crazing cracks and flashing 536
leaks. Advise your client.

Why is the tar present?
537

What will you report?
538

What will you report?
539

What will you report?
540

What will you report?
The flashing details at the
skylight k li ht ddo nottconform f
with acceptable building
practices. There is a risk
of leakage and interior
water damage.
needed.
Repair is
541

Look for one piece of flashing per row of shingles
542

543

Reporting on signs of water
penetration is required in
the S.O.P.
Skylight
Ceiling
544

545

Skylight checklist:
One piece of flashing per row of shingles
No tar or caulking on the flashings
Evidence of repairs
Skylight curb elevated above the roof
W Workmanlike k lik manner
Cracks, crazing, seal failures
Stains on ceiling above skylight = roof leak
Stains on ceiling below skylight = flashing leak
Stains on walls adjacent j to skylight y g = condensation
Missing hardware
Broken hardware
546