Found 85 results for the keyword ‘Condensation’

  • WHAT IS DRY ROT?

    Dry rot is actually a fungal growth that destroys the cell structure of wood. In order to grow it requires moisture, oxygen, and warmth. Once started it will not grow in the winter, but it will survive and continue to grow during whatever periods of time provide its three necessary conditio...
  • Water running down the basement walls.

    Carol from Smith Falls has a new home but has had water running down her basement walls from the beginning, and no one, not even her builder, seems to be able to figure out why. As well, the problem seems to get better and worse with time, but still wet. First of all you need to keep in mind tha...
  • Dust marks following studs on wall -- Ghosting

    Ralph from Red Deer Alberta sees the shadows of every 2x4 and every nail on the inside of the house not long after painting. I don't think he really wanted to hear that we call this "ghosting".\012\012Actually it is caused by thermal bridging; cold following the studs through the insulation and ...
  • CONFUSION: SHOULD VENT DUCTS GO THROUGH THE CEILING?

    Many government or crown corporation publications are afraid to ask too much of homeowners both in terms of work and comprehension. They prefer that homeowners do things half-way rather than not at all. When compromises seem to work some of the time, these publications (and many contractors) are ...
  • How do I properly vent a range hood?

    Vern has a range hood on an inside wall and is wondering if he could just use the hollow wall cavity or should he line it, and could he just vent into the attic because the attic itself is vented. There are actually a lot of interesting questions there Vern. First remember that there is a lot of...
  • Soffit vents covered up or just not working.

    Manuel from Kingston, Ontario has just purchased a house and knows that there have been past problems with ice-damming. He inspected the attic and found that there were enough roof top vents, but the old wooden soffits have been covered up with aluminium and there were no vents installed. How can...
  • How to keep a mirror fog free.

    One viewer recommended using hard soap on a mirror to keep it from fogging up in the bathroom. So we tested it against no treatment, and against polishing it with shaving cream, a recommendation from a viewer last year. The hard soap looked pretty good although a bit streaked. The ?no treatment?...
  • WHAT IS A PLANNED-HOLE-HIGH-IN-THE-HOUSE? 1

    Answer One "Planned-holes-high-in-the-house" are part of buiilding science considerations as to how air moves in buildings creating pressure differences that can help to keep houses dry and mold free or can help to trap pollutants in the house or even in the walls.A planned-hole-high-in-the-house...
  • Is there any difference in the spacers in new energy efficient windows?

    Yes!Traditionally thermal windows were held apart by a hollow tube of aluminium and then sealed with some sealant over that. Of course the aluminium let a lot of cold come from the outer window to the inner window. (Actually cold doesn't exist -- it is just the absence of heat and heat moves no...
  • WHAT IS THE NEUTRAL PLANE?

    (Also called the neutral pressure point or the zero pressure point.)Cold air will generally sneak in (infiltrate) at the bottom of the house and warm air will leak out (exfiltrate) at the top of the house. This is called the "stack effect" caused by the rising effect of warm air. In between ...