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Protecting Your Property from Wind
Garage Doors
If you aren't sure whether
your house is at risk from hurricanes or tornadoes, check with your
local building official, city engineer, or planning and zoning
administrator. They can tell you whether you are in an area where these
high-wind events occur. Also, they usually can tell you how to protect
yourself and your house and property.
What You Can Do
Hurricane and tornado
protection can involve a variety of changes to your house and property
-- changes that can vary in complexity and cost. You may be able to
make some types of changes yourself. But complicated or large-scale
changes and those that affect the structure of your house or its
electrical wiring and plumbing should be carried out only by a
professional contractor licensed to work in your state, county, or
city. One example of hurricane and tornado protection is reinforcing
garage doors to protect them from damage by high winds, or replacing
them with doors that are more wind-resistant. These are things that
should be done only by a trained door systems technician.
Reinforce or Replace Garage Doors
High winds from hurricanes
and tornadoes can damage garage doors or even blow them in. If wind
enters a garage it can cause dangerous and expensive structural damage.
Reinforcing your garage door helps you protect not only your garage but
its contents as well.
The garage door industry
strongly recommends that any determination concerning the need to
reinforce or replace a garage door be based on an inspection by a
trained door systems technician or a qualified professional engineer.
Adding weight to a garage door in the form of reinforcement may require
an adjustment to or replacement of the door's counterbalance system.
Only a trained door systems technician should perform the adjustments
or replacement. An inspection may find that other improvements should
be made to an existing door, and if the door is old or damaged,
replacement with a stronger door system may be recommended.
Tips
-
Keep these points in mind
when an inspection by a trained door systems technician or qualified
professional engineer has determined that your garage door needs to be
reinforced or replaced
-
Because of the extreme
amount of stored energy in the door counterbalance system combined with
the potential impact on the counterbalance system's effectiveness when
weight is added to an existing door, reinforcing a garage door is a job
that should be done only by a trained door systems technician.
-
A local garage door
professional should be able to assess the wind load requirement of your
garage door, which is based on size, local design wind speed, and
location on the structure, among other factors.
-
Don't wait until a
hurricane warning is issued to have your garage door evaluated; there
will probably not be enough time for this service to be provided.
-
Glazing (windows) in a
garage door can be broken by windborne debris and should be avoided. If
glazing is installed, it should be protected. Your local garage door
professional or DASMA may be able to advise you on garage door glazing
and the governing requirements.
Estimated Cost
Read your homeowners insurance policy carefully and be sure to have coverage for this hazard, especially if you live in an area prone to wind damage.
If you hire a contractor to
reinforce an existing two-car garage door, you can expect to pay about
$600. However, this cost can vary depending on the size and type of
door.
Brace Gable End Roof Framing
If you aren't sure whether
your house is at risk from hurricanes or tornadoes, check with your
local building official, city engineer, or planning and zoning
administrator. They can tell you whether you are in an area where these
high-wind events occur. Also, they usually can tell you how to protect
yourself and your house and property from the effects of high winds.
What You Can Do
Hurricane and tornado
protection can involve a variety of changes to your house and property
-- changes that can vary in complexity and cost. You may be able to
make some types of changes yourself. But complicated or large-scale
changes and those that affect the structure of your house or its
electrical wiring and plumbing should be carried out only by a
professional contractor licensed to work in your state, county, or
city. One example of hurricane and tornado protection is adding bracing
to gable end roof framing. This is something that only a licensed
contractor should do.
Brace Gable End Roof Framing
Gable end roofs are more
susceptible to damage by high winds than hip roofs or flat roofs. The
gable end presents a large obstacle to the wind and receives its full
force. If the framing of the gable end and the rest of the roof is not
adequately braced to resist the wind, the roof can fail. Roof failures,
especially in unbraced gable roofs, are a common cause of major damage
to houses and their contents in high winds.
If your house has a gable
roof, you should check to see whether the roof framing is braced. The
figure shows a cutaway view of an unbraced gable end roof. This is a
truss roof, but some gable end roofs are constructed with rafters
rather than trusses. Both types should be braced. If you are unsure
whether your gable end roof is adequately braced, check with your local
building department. After inspecting your roof framing, a building
official can tell you whether bracing is required and if so, how it
should be added.
Tips
If you have a building official inspect your roof framing, ask about
other changes you may be able to make to your house to protect it from
high winds.
Estimated Cost
If you hire a contractor to
brace a gable end roof, you can expect to pay about $75 for each gable
end. This figure is for a gable end about 30 feet long. Bracing longer
gable ends may be slightly more expensive.
Trees and Potential Windborne Missiles
Are You At Risk?
If you aren't sure whether
your house is at risk from hurricanes or tornadoes, check with your
local building official, city engineer, or planning and zoning
administrator. They can tell you whether you are in an area where these
high-wind events occur. Also, they usually can tell you how to protect
yourself and your house and property from the effects of high winds.
What You Can Do
Hurricane and tornado
protection can involve a variety of changes to your house and property
-- changes that can vary in complexity and cost. You may be able to
make some types of changes yourself. But complicated or large-scale
changes and those that affect the structure of your house or its
electrical wiring and plumbing should be carried out only by a
professional contractor licensed to work in your state, county, or
city. One example of hurricane and tornado protection is clearing the
area around your house to remove trees and materials that can be
hazardous during high winds. Removing debris and small trees are things
that many homeowners can probably do on their own.
Remove Trees and Potential Windborne Missiles
If the area immediately
surrounding your house contains trees, outbuildings, trash cans, yard
debris, or other materials that can be moved by the wind, your house
will be more likely to be damaged during a hurricane or tornado. The
wind can topple trees onto your house and can pick up smaller objects
and drive them through windows and glass doors.
You should ensure that all
trees are far enough away from your house that they can't fall on it.
So the distance between your house and any nearby tree should always be
greater than the height the tree will reach when it is fully grown. All
storage sheds and other outbuildings should be securely anchored,
either to a permanent foundation or with straps and ground anchors.
Smaller objects, such as trash cans, barbecue grills, and outdoor
furniture should also be anchored or, if you have adequate warning,
moved indoors. You should also clear away any debris, such as fallen
tree branches.
Tips
- Keep these points in mind when you remove trees and potential windborne missiles from around your house:
- Removing
large trees near your house can be extremely dangerous, for both you
and your house, and therefore is a job for a skilled contractor.
- The
straps and ground anchors used for manufactured homes also can be used
to anchor outbuildings, especially small garden sheds, which are
usually not placed on a permanent foundation.
- You
can secure outdoor furniture and barbecue grills by bolting them to
decks or patios or by attaching them to ground anchors with cables or
chains.
- You
can secure trash cans with cables or chains attached to ground anchors
or to wood posts firmly embedded in the ground. Trash can lids should
be tied to cans with cables or chains.
Estimated Cost
If you hire a contractor to
remove a large tree, you can expect to pay about $300 to $500. Having a
contractor anchor storage shed with straps and ground anchors will cost
about $100 to $200.
To obtain
copies of these and other FEMA documents at http://www.fema.gov.
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