Carbon Monoxide . . . The Invisible Killer

How it kills… Carbon monoxide (CO) is toxic to humans because it is attracted to hemoglobin, the main component of red blood cells. Normally, hemoglobin carries oxygen throughout our bodies, releasing it to tissues as needed. When CO gas is present, it replaces the oxygen, and in heavy concentrations, can kill in minutes. In lower concentrations the symptoms mimic the flu or other viruses which are common in cold weather months.

The Warning Signs

In Your Home Due to its nature, carbon monoxide cannot be detected by the human senses. But sometimes the gas will leave clues to its presence. These are things to look for which might indicate that (but not always) you have excessive concentrations of CO:

  • Stale, stuffy air that never seems to clear.
  • Excessive humidity that condensates on windows.
  • A hot draft venting from the chimney into the home, or no draft at all in the chimney.
  • Soot which accumulates around the outside of a fireplace, chimney, or furnace.
  • A smell of exhaust fumes in the air.

Use a Carbon Monoxide Detector. It’s an economical and accurate way to warn you if dangerous levels of carbon monoxide are accumulating in your home or RV.

  1. Check all your duct work which is vented to the outside (chimneys, water heaters, etc) on an annual basis for any signs of blockage (bird nests, large twigs, etc.)
  2. If you have a fireplace or wood-burning stove, have the chimney cleaned annually.
  3. Have your heating system inspected annually, (before the cold weather sets in) to check for proper and safe operation of all parts.
  4. If your home is extremely airtight, you may want to contact your local utility company for information regarding adequate ventilation, back drafting concerns, or to measure the carbon monoxide level in your home.
  5. Don’t forget your water heater. Make sure that is properly vented and the ductwork does not leak any exhaust gases into the room.

Inspect your vehicle’s exhaust system for leaks. Most muffler shops will do this for free.

This year, many people will needlessly die from Carbon Monoxide poisoning.

These common sense, often quoted rules could save your life.

NEVER sit in a parked car with the engine running and the windows closed.

NEVER let your car idle in a closed garage.

NEVER heat a room or your home with a kitchen stove or oven.

NEVER use an un-vented gas heater indoors.

NEVER use charcoal indoors.

NEVER enclose furnaces and/or water heaters without proper ventilation.

NEVER use LP appliances or gasoline lanterns indoors or in a camper/RV unless they’re vented outdoors.

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Plywood Grade Stamp Explained

APA Stamp

The span rating indicates the maximum inches between supports (i.e. joist, truss etc) that the panel may be applied. If there are two numbers, the first refers to roof applications, the second to floor applications.

The Exposure Durability Classification defines whether the panel should be
used for interior or exterior applications:

  • Exterior panels have a fully waterproof bond and are designed for
    applications subject to permanent exposure to the weather or moisture.
  • Exposure 1 panels are designed for protected construction
    and industrial applications and can be exposed to the elements for a short
    time, but not permanently.
  • Exposure 2 panels are intended for protected construction
    and industrial applications where the potential for conditions of high
    humidity and water leakage exist.
  • Interior panels are manufactured with an interior grade
    glue and are intended for interior applications only.

The thickness of the panel is also included on the stamp.

Installation Instructions

Consult with a professional installer, licensed contractor or, for detailed application and installation instructions, write to:

APA-The Engineered Wood Association
7011 S. 19th Street
Tacoma, WA 98466-5333
(253) 565-6600
www.apawood.org

Pine Finishing Recommendations

Prime and paint or use two coats of opaque (solid color) stain. Use acrylic
latex paint only; oil based paint is not recommended.

When used for an outdoor application, it is important to prime and paint all
exposed surfaces including edges.

IT IS RECOMMENDED THAT REPAIR WORK BE PERFORMED BY A
LICENSED PROFESSIONAL.

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