How Repairing My Roof After a Storm
Kamis, 24 Mei 2012
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Repairing My Roof After a Storm
MY ROOF WAS DAMAGED
DURING THE STORM. WHAT
SHOULD I KNOW ABOUT REPAIRING MY ROOF?
Your roof covering and the deck
beneath it are your home’s first line of defense against high winds, rain, and hail. The following information will help you with selecting a roofing contractor and installing a roof after a storm.
Before Making Roof Repairs
• If your home is located
in the first row of Texas counties bordering the Gulf of Mexico or in one of the following cities in Harris County that is East of HWY 146: La Porte, Morgan’s Point, Pasadena, Seabrook,
or Shore Acres, contact your insurance agent to determine if your repairs need to comply with the Texas
Windstorm Building Code
(TWBC).
• If repairs need to comply with the TWBC,
talk to your insurance
agent or adjuster about the Windstorm
Inspection Program to maintain or obtain windstorm and hail insurance coverage.
• Repairs made and inspected to comply with the TWBC will receive a Certificate of
Compliance, Form WPI-8,
from the Texas Department of Insurance (TDI).
• Additional information on the Windstorm Inspection Program
is available at www.tdi.state.tx.us or by calling
(800) 248-6032.
• Contact your local building
official for building
requirements in your area.
• Contact your insurance agent to determine
if certain roof covering products
are eligible for insurance discounts.
Selecting a Roofing Contractor
How do I go about selecting
a contractor to install my new roof?
• Verify the name,
address,
telephone number,
and
references
of
your
roofing contractor.
• Make sure that the contractor is insured or bonded.
• Obtain and compare at least three
written bids.
• Make sure that all agreements and
terms of warranty are written and signed and that
you have received copy.
• Make sure that the re-roof application is eligible for receiving
a
Certificate
of
Compliance, Form WPI-8,
from the TDI if required
by your insurance company.
• Final payment should not be
made until all work is complete.
• Avoid door-to-door solicitors for damage repair work.
Beware of a contractor…….
• Who only wants cash.
• Whose references are all out of state.
• Who wants money before materials
are on site.
• Who is not established.
• Who is not bonded
or insured.
• Who offers “specials”
or “extra-cheap work.”
Roof Installation Requirements to the
Texas Windstorm Building Code
1. What
are the roof product choices
for my house?
Texas experiences
two of the most severe
weather conditions a roofing
system can face: high winds and hail.
Homeowners have several choices
on roof covering material types. The
most common roof covering for residential structures in Texas is asphalt
shingles. If you are using asphalt shingles on your roof, select shingles
that have been tested
to and the shingle wrapper indicates compliance with either ASTM D 3161 Class
F or
ASTM D 7158 Class H. Asphalt shingle product and other roof covering
product information is available at www.tdi.state.tx.us or by calling
(800) 248-6032.
2. Is my roof decking
acceptable as it is or should it be reattached, or possibly replaced, while the existing
roof covering has been removed?
Your roof deck should
be inspected and any deteriorated or damaged decking
replaced prior to the installation of a new roof covering.
Older Deteriorated and Damaged Deck (Board Decking)
New Deck Application Using Oriented Strand Board (OSB)
3. What
kind of underlayment should be installed?
A minimum of No.15 underlayment (felt)
is required for asphalt
shingle installations. Two layer of felt are required
for roof slopes from 2:12 up to 4:12.
For roof slopes 4:12 and
greater, one layer of felt is required. Make sure the felt ins installed
as required by the Texas Windstorm
Building Code and the shingle
manufacturer.
4. What kind of roofing
nails should be used to install
the shingles?
Roofing nails shall
be galvanized steel or stainless steel, minimum 12 gauge (0.105”)
shank with a minimum 3 8 ” diameter head. Staples are not acceptable!
PROPERLY DRIVEN
IMPROPERLY DRIVEN
UNDERDRIVEN OVERDRIVEN CROOKED
Properly and Improperly
Driven Roofing Nails in Shingle
5. How should asphalt
shingles be installed?
The asphalt shingles shall be installed in strict accordance with
the manufacturer’s installation instructions on the shingle
wrapper. Note:
Asphalt shingles can only be
installed on roofs with a roof slope of 2:12 or greater.
Standard Installation of a Three-tab Asphalt Shingle
In High Wind Areas
36"
1" 1"
12"
NAILS
NAILS
NAILS
12"
12"
12"
INSTALL PER THE MANUFACTURER’S INSTALLATION
INSTRUCTIONS
CEMENT LOCATED UNDER
EACH TAB
FASTENERS
Asphalt Shingle Installation
6. What
if I have a metal roof panels
, metal shingles,
or concrete roofing
tiles?
How should these products be installed?
Roof covering
products shall be installed
in strict accordance with the manufacturer’s
installation instructions and
their
tested
high wind applications. The
TDI
has
roof
covering product listings for many types of roof coverings by many manufacturers. Approved product information is available
at www.tdi.state.tx.us or by calling (800) 248-
6032.
7. If I want to install
or need to replace my skylights,
roof vents or roof turbines, what do I need to know about getting the right product
for my house?
Skylights, roof vents and roof turbines are vulnerable to high winds and hail. You need
to choose products that have a published wind resistance rating. For
hail prone and hurricane prone regions,
choose impact resistant
skylights which are tested to ASTM E
1886 and E 1996.
The TDI has skylight,
roof vent, and roof turbine product listings
for many product manufacturers. Approved product information is available
at www.tdi.state.tx.us or call (800)
248-6032.
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