Found 85 results for the keyword ‘Condensation’

  • Stopping mould growth above the bedroom window.

    Lorraine from Elliot Lake, Ontario has mould growing out from the joint between the wall and the ceiling in her bedroom. This is a common problem caused by the fact that most houses are built with two pieces of wood on the top of the wall called a ?double header?, with no insulation at this spot...
  • I painted my bathroom and now I am getting mould!

    Anne painted her bathroom with latex paint and then started to get mould and mildew where she never had any before. She is wondering what she did wrong? Mould is caused by the prolonged presence of condensation. Condensation is caused by a combination of high humidity and low temperatures. If yo...
  • Mysterious tracks in an attic.

    Dennis in Calgary, Alberta convinced me to come visit his attic which he was about to add ventilation to, but he had never been up in the attic.This was a very interesting attic, and an interesting home. The cellulose insulation was matted down a bit and had a very strange grid pattern in the to...
  • How to check if your furnace oil tank is safe

    Underground tanks are banned Many years ago we buried oil tanks in the ground. Think a minute about how bad an idea that was. When a very old tank developed a leak, we never knew about it and it just leaked oil into the ground for years, creating quite an environmental problem. That is why it is...
  • How to properly duct an exhaust fan through a roof

    This item falls under the heading of 'things that homeowners can teach their contractor'. Unfortunately too many renovators do not know that you can cause serious damage to your roof if you don't duct exhaust fans completely out of an attic. Some know, but just don't care. You cannot just leave ...
  • Frost on the closet ceiling.

    Martin from Moncton, New Brunswick has frost forming on the ceiling of a closet in an unheated bedroom.First, you need to realise that heated or not heated, that bedroom has just as much moisture in it as the rest of the house, perhaps more because moisture tends to migrate from warm to cold area...
  • WHAT IS RELATIVE HUMIDITY and HOW DOES IT RELATE TO COMFORT?

      Montreal winters are uncomfortably cold;           while in Saskatoon it is even colder but more comfortable Montreal summers are uncomfortably hot ;           while in Arizona it is even hotter but more comfortable Why?  It is all about Relative Humidity. If we come to understand humidit...
  • Hollow Bulkheads over bathtubs.

    Rodney from Hamilton Ontario asks "why is there a bulkhead over most bathtubs? Every home I remodel seems to have the ceiling above the tub furred down about one foot." First of all Rodney, bulkheads are not a requirement of any kind and as far as I know, never were. In fact, they are a very reg...
  • WHAT ARE THE RULES FOR APPLYING INSULATION IN THE ATTIC?

    -- Take care of air barriers, ventilation and vapour barriers before insulating. Check out these three topics in the Search Tab above.-- Don't block the eave vents with insulation.-- Do cover the top of the outside wall.-- Don't put plastic foam on top of porous insulations (batts, loose fill) a...
  • Radiant Heating Systems for Homes

    Radiant Heating and Convection Heating are the two primary types of ways we heat our houses. FORCED AIR HEATINGConvection heating means moving hot air -- what we usually call a forced air heating system simply heats air and moves it around the house through a system of fans and ducts.  Forced air...