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Found 33 results for the keyword ‘R-Value’

  • RIGID BOARD: SEMI-RIGID GLASS FIBER

    Example: GLASCLAD from Fiberglas Canada -- but this product is no longer produced as of the summer of 2000.Colour: Pink with Tyvek house wrap covering.Thermal Resistance: RSI - .031/mm R - 4.4/in. HighCost: HighCapacity to dry out if wet: Excellent.Fire Resistance: GoodFungus / Vermin...
  • RIGID BOARD: RIGID GLASS FIBRE

    Examples: BASECLAD from Fiberglas CanadaColour: PinkThermal Resistance: RSI - .030/mm R - 4.3/in. High.Cost: HighCapacity to dry out if wet: Excellent.Fire Resistance: GoodFungus / Vermin Resistance: GoodLimitations: -- Must not be installed in the ground unless it reaches all the w...
  • FOAMED-IN-PLACE: POLYURETHANE FOAM

    Colour: Yellow - OrangeThermal Resistance: RSI - .042/mm R - 6.0/in. Very High.Cost: Professional application -- expensiveCapacity to dry out if wet: FairFire Resistance: Poor: produces toxic fumes.Fungus / Vermin Resistance: GoodLimitations: -- Difficult to control quality of field...
  • FOAMED-IN-PLACE: POLYMERIC FOAM

    Colour: Orange, pink, yellowThermal Resistance: HighCost: It is expensive insulation but cheap caulking.Capacity to dry out if wet: FairFire Resistance: Poor. Produces toxic fumesFungus / Vermin Resistance: GoodLimitations: -- Expands on application and with age. Do not shoot into a total...
  • FOAMED-IN-PLACE: UREA FORMALDEHYDE.

    Aside from the controversy about health problems, this was a poor insulating material in the first place. It was initially given a high R rating, but was subsequently down graded sixty percent by the Canada Mortgage and Housing Corporation, because it tended to shrink and leave gaps in the i...
  • BASEMENT: WHAT R VALUE SHOULD I HAVE?

    For detailed R value recommendations, search keyword "R-Value" for the title "WHAT ARE THE RECOMMENDED INSULATION LEVELS?".Note that in the previous answer, some of the common options for basement insulation does not even meet the minimum recommendation of RSI - 2.1 (R-12). Manufactures of all...
  • WINDOWS

    No matter how you cut it -- a good window is still a lousy wall. Glass has almost no thermal resistance (RSI - 0.16; R - 0.88), and a single-pane window in Canada not only makes a lousy wall in winter, but it makes a lousy window too -- you can't see through the thick layer of ice! But a ho...
  • What does R-factor mean in thermal insulation?

    When scientists measure the movement of heat (thermal transfer) through a material, they calculate it in something called the U-factor, a measure of thermal conductivity. A small number indicates a material that conducts heat poorly and a high one indicates a material that conducts heat well....
  • WHAT ARE THE RECOMMENDED INSULATION LEVELS?

    Back in the early 1980's there existed some fairly simple tables to guide homeowners in determining the insulation levels that they might want to put into the various parts of their houses. We had tables for standard houses, for energy efficient houses, super insulated houses and even for trying ...
  • WILL REFLECTIVE FOILS HELP TO INSULATE MY WALLS?

    Yes but no. (I thought you'd like that one.) Aluminum reflectors will turn back RADIATION heat losses into the house, and in fact help to limit heat losses. However, they will only work if there is at least a half-inch air space in front of the reflective surface and the surface remains clean an...