Found 42 results for the keyword ‘Ice’

  • The roof on the new house still leaks -- is it the codes fault?

    Sheila writes from Ottawa : Hi there. I will try to make this as easy as I can however, it may not be.I purchased a brand new home from a very reputable builder in 1999 and took possession in December of that same year. December led into January and towards the end of January I began to experienc...
  • Pro: Air Entrained Concrete

    Concrete, outdoors in the Canadian climate, has a particularly difficult time surviving. Walkways, patios, driveways and the like must have as much as 4 to 6 inches of gravel as a drainage base to minimize the effects of shifting from frost movement in the soil. Drainage around these areas has to...
  • OVERVIEW: Roof Ice Dams & Icicles

    "Why do some houses have ice dams on the roof and others do not?" The overview is below -- for details go to Ice Dams. Ice dams develop when snow is on the roof, outdoor temperatures are only slightly below freezing, and there is spot or generalized heat loss from the house into the attic/roof...
  • Overview: Attic Moisture

    Ventilation in a Canadian attic does very little to remove moisture when the temperature in the attic is below freezing. During that time, the moisture is in the form of Ice and the passing air simply won't remove it -- whether you have passive vents or power vents. When things warm up, if the ...
  • Shields for Rain Gutters

    One of the most successful, but most expensive ways to keep leaves out of rain gutters is to place a solid shield over the top.  Using the principle of surface tension of water, the water flows over the shield and wraps around its outside curve.  That curve extends out over the rain gutter itsel...
  • Retaining Walls and Frost

    Hi Jon,  I have a driveway retaining wall that continues to be pushed by the ground, even though it is backed by gravel and drained to "nothing under the driveway" except crushed gravel. I realize proper drainage affects this somewhat, however would prefer not to cut open my driveway, sidewalk a...
  • HOW MUCH MOISTURE DAMAGE CAN A LITTLE CRACK CAUSE?

    Little cracks in the bottom of the house let cold air in, and can raise your heating costs by as much as $600 a year. They also dry out the air in the house, resulting in dry throats and the needless purchase of humidifiers. Nothing too serious -- unless you don't like wasting money! Let's start...
  • OVERVIEW: Changing the roof or roof covering on a house

    As I look at my own database, I see that I have almost 100 answers to specific questions about roofs and roofing.  Despite a good search engine, that much scattered information can get confusing.  Let me make just a couple of overview statements to help guide you in getting your existing or new r...
  • Making an X-Ray of your roof

    When there is morning frost or light snow on a roof, you can learn a lot about a heat losses from the house and how to eliminate ice dams and icicles.    What causes problems  Melting the bottom of a snow pack or melting off all snow at the crown of the roof sends water down under the snow to ...
  • Heating Ducts in the Attic & Ice on the roof!

    Ray from Woodstock, Ontario writes:For 20 years we had no ice problems on the roof. Heating was radiant heating in the ceiling. Then we installed a forced air furnace. The contractor ran all the ducts through the attic and we have had terrible ice dams ever since. The contractor refused to...