JUNE 2007
Effective Ventilation System Maintenance Stops Ice Damming

After every winter, many homeowners have to repair water damage caused by ice damming by snow on roofs and in gutters because they failed to do regular effective ventilation system maintenance.



The ideal method is for roof ventilation to pull air through the soffit vents and exhaust it through an individual roof or continuous ridge vent.

We recommend a clear space of least 2 inches above your ceiling insulation to allow the moisture that moves through your attic insulation to exhaust through roof ridge vents.

Heat travels by convection, conduction, and radiation. Because energy costs a lot of money it's important to prevent the warm air from escaping through walls, ceilings, and roof. Insulation and vapor barriers trap the heat, or slow its flow.

During winter months we heat our homes. Our interior heat rises and permeates through the ceiling vapor barrier and attic insulation and causes ice and snow to melt resulting in possible water leakage. Water from the melting is trapped creating an “ice dam” on the roof, gutters and downspouts.

Removing this ice and snow you may cause damage to the roof and is dangerous. An alternative emergency method to avoid damage if the interior heat problem can’t be corrected is to create water runoffs through the ice and snow. Doing this allows the water to flow off the roof.

Our roofs take quite a beating during their lifetime. Because they are fully exposed, roofs catch the brunt of weather's worst.

A roof system is composed of several elements that work together to provide three basic, essential functions for your home – shelter, drainage, and ventilation.

The roof covering and the flashing are designed to shed water, directing it into gutters and downspouts that channel it away from the foundation. Air intake and exhaust vents keep fresh air circulating below the roof sheathing, preventing moisture build-up as well as heat build-up.




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Buying an older home?
Here are five things that make insurance companies nervous.

  1. 60amp electrical service
    · If your electrical service is 60amp or below, your insurance company may require you to upgrade to 100amp to obtain coverage. However, they may accept a switching device such as a Load Miser that allows for the operation of only one major appliance at a time


  2. Knob and tube wiring
    · Many older buildings built in the 1920’s or earlier were constructed with knob and tube wiring (see below). This means that the building has no ground wire, and that the existing wire can be fragile because of its age – creating a potential safety hazard. An inspection by a certified electrician may be required to obtain insurance coverage. There is no requirement to replace knob and tube wiring except when renovating. Also, a knob tube circuit must not be extended.


  3. Wood burning stoves
    · Modern wood burning stoves have been tested and approved by CSA, UL or a similar testing agency. An approval symbol and the acceptable clearances between the stove and any combustible surface are clearly marked on the back of the stove. If you cannot find the approval symbol, then your stove is likely not approved. In such a case, the insurance company may require that you remove it.
    · Even if your stove is approved, you may have to have the installation approved by a Wood Energy Technical Training (WETT) technician to satisfy the insurance company. If you plan to install a wood burning stove in your home, check with your insurer in advance to find out their requirements.


  4. Fuel oil tanks
    · Older fuel oil tanks are susceptible to leakage. If a fuel oil tank does leak, the clean up costs will be considerable (one case I heard of a cost of $60,000). Therefore, most insurance companies will only insure a fuel oil tank if it is less than 25 years old. If your tank is older than that, typically your insurer will require that it be replaced before you can obtain coverage. Also if you have an oil tank check your insurance policy to make sure you are covered.


  5. Galvanized steel pipes
    · Houses built before 1950 often have galvanized steel plumbing for both supply and waste. These steel pipes rust from the inside out, resulting in reduced water pressure, slow drains and eventual leakage. As the risk of leakage is high, the pipes should be replaced as soon as possible.

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TURN ON THE POWER TO YOUR AIR CONDITIONER
(Courtesy of Sears Manage my home).

Summer is upon us. It's time to dust off your golf clubs and fire up the A/C. But before you flick the little switch on the thermostat from "heat" to "cool", here's a little warning.

Turn on the power to your air conditioner 24 hours before using your air conditioner.

The compressor is the heart of your air conditioner. Like a bicycle pump, it is designed to pump only gas.

There is a heater built into the compressor. Over the winter, the refrigerant in your system has combined with the oil in your compressor. The heater separates the refrigerant from the oil and boils the refrigerant into a gas -- something the compressor can handle. You can seriously damage a compressor if you ask it to compress a liquid. By turning the power on 24 hours in advance, you give the heater time to work.

Turn on the power to the whole system. This is best done at the main electrical panel. Simply reinstall the fuses or turn on the breakers marked "air conditioner." Some air conditioning systems have an outdoor shut-off close to the outdoor unit. Make sure it is turned on as well.




Remember

Air conditioners should be serviced regularly, for example, you run the risk of damaging it if it is low on gas. Our best advice is to arrange for service before the first heat wave.

Never use your air conditioner when the outside temperature is below 65°F (18°C). You can damage the compressor.

Your humidifier duct damper has likely been in the open position during the winter months. Now is the time to move it to the closed position. This makes your air conditioner run more efficiently.


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Green Tips

Make sure your hot-water tank is dressed correctly. A lagging jacket costs $30 and the insulation for the pipe leading to the hot-water tank from the boiler costs $2 a metre. The yearly saving on your bill: $30 to $40. Go to this link for more information: www.bchydro.com/powersmart/elibrary/elibrary698.html
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A Quote

Mark Twain said: "The spider looks for a merchant who doesn't advertise so he can spin a web across his door and lead a life of undisturbed peace!"

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