Found 11 results for the keyword ‘Sheathing’

  • Why is Celotex insulation not seen much in Canada?

    Gordon from Montreal writes asking about the use of Celotex foam insulation (with aluminium foil cladding on both sides- 4 X 8 sheets). He writes:?For your information, the Celotex product is considered by many, to be a premium insulator for residential installations. Ironically it is made i...
  • Rainscreen Detailing and the Canadian Building Code

    I have reproduced below an article from the construction professional publication Solplan Review November 2008 because it was such a good article on this complicated subject. Click here for SolPlan Review information.  For an animation on what is a rainscreen, follow this link. Changes to the Bu...
  • MYTH: INSULATION CAN BE ADDED BETWEEN EXISTING BRICK SIDING AND THE HOUSE.

    Do not fill the space between brick siding and the sheathing. First, this space is outside the sheathing and does not cause condensation, as does an air space inside the wall. (A small space between ordinary siding and the exterior insulation or between ordinary siding and sheathing is also perm...
  • Will blown in insulation settle in walls?

    Steve asks: "I have a question about insulating a home from the exterior. My house has got wood siding and I'm going to be removing it and replacing it with vinyl siding and when I do I want to insulate certain areas with blown in insulation but I heard that it settles over time. So if it start...
  • CONFLICT: USE OR DON'T USE BLOWN-IN LOOSE FILL INSULATION INSIDE HOLLOW WALLS.

    Canada Mortgage and Housing Corporation (CMHC) does not recommend the use of any blown-in insulating material inside "enclosed vertical cavities" (that's a fancy way of saying "walls that are not open"). They feel that techniques of installation and verification during installation are not good ...
  • Tips for working with fiberglass insulation

      CUTTING FIBERGLASS STRAIGHT AND SQUARE   It is always easier to cut fiberglass batt insulation if you compress it down as flat as possible. That way you can get through in one pass. Using a piece of plywood gives you a straight edge at the same time.         There is a special devic...
  • Air Spaces in Walls -- Myth and Science -- Overview

      Walls often have air spaces hidden somewhere between the siding on the outside and the drywall on the inside.  Some are accidental -- some on purpose, even code required -- some served a purpose at one time in history but because of the evolution of construction, are no longer useful -- some a...
  • CAN AIR BARRIERS BE PUT ON THE OUTSIDE OF THE HOUSE?

    There are two systems that work well on the outside of the house and have, almost by accident, the effect of blocking almost all air movement through the wall. (Caulking is not one of them and should never be used on the outside of the house beyond what is necessary to prevent rain and snow ...
  • WITH EXTERIOR INSULATION -- DO I USE BUILDING PAPER? DO I CAULK THE JOINTS?

    An incredible number of exterior insulation jobs are done wrong and do not follow the building codes requirements regarding the use of building paper. This can lead to immediate water problems inside the wall (rain penetration or condensation) or less evident long term decay.Building paper (m...
  • 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...