Double Wall Construction I built our house in 1982, with 12" double walls. The OS 2x4 is the bearing wall, the IS wall is 2x3 with the 6mill VB on the bach side, covered with 1/2" fibreboard. The top and bottom plates are 12" wide, 3/4" exterior grade plywood. Exterior finish is stucco over 5/8" fibreboard sheathing. All poly seams are caulked with Acoustic sealent. The windows are set plush with the IS wall. The wall has an "R" of 40. The ceiling apour barrier and drywal was installed prior to the walls. All wiring, except for 2 lite fixtures, runs in the insulated servvice space or the basement. These 2 wires were brought thru poly boxes and caulked with acoustic. The poured concrete foundation has 2" SM on the outside and R20 framed walls inside. The concrete bsmt floor was poured over 1 1/2' styrofoam and 6 mill poly. Heating is 10 kw electric furnace and HRV (no gas). Central AC for summer We are in Winnipeg, Manitoba, Canada, just 3 hours north of Grand Forks, ND .Hydro budget is $135. 00 per month. Have had no problems in 29 years
Posted: 08:06 pm on January 25th 2012
I built my "Double wall" house in 1981, in Winnipeg, Manitoba, Canada (no jokes). We are about 3 hours north of Grand Forks ND. I used a 2x4 os bearing wall and a 2x3 is wall. We require vapor barrier and I put it on the back of the 2x3s. The VB is covered with 1/2" KB board, to keep the VB from flexing due to wind pressure. All electical is run in the 2x3 space, on the warm side of the VB. The wall plates are 12" wide, 5/8" plywood, top and bottom and the walls each have single T & B plates. The outside finish is 3/4" stucco on wire lath ove building paper and 5/8" KB sheathing.. Ceiling was drywalled before the interior walls and only has the plumbing stack penetrating. The walls are R-40 fibreglas, ceiling R-60 celluose, basement walls have 2" SM on outside, R-20 on inside. Basement floor poured over 2" styrofoam and 6 mil poly. Have a 15 Kw electric furnace (only use 10), CA and an HRV. I don't know what zone this falls into but after 30 years, no problems. Keep up the good work.
Posted: 06:41 pm on June 6th 2012
Drain installation Don't want to be a wet blanket but 2 items; - would it not be easier to pour the footing dowels into the footing, at the proper locations rather than spend all the time and energy to drill and , I assume , grout the dowels in after ward? - the 2 workers installing the drainpipe in the trench could have been killed. The OSHA Regulation 29 CFR 1926.651 & 652, require trench excavations over 5 ft deep be shored and supported. It also states that heavy machinery not be near the edge. If you are using this article as a training and information vehicle, that the young and future builders can use to build our future housing, should not it also show how to stay alive so they can.
Posted: 08:55 am on January 31st 2013
Garage doors The door manufacturers claims could revolutionize the housing industry. With R-15 to 17 ratings, prefinished and textured finish, it would be cheaper to clad the outside of a house and achieve an R-40 +/- wall rating, using garage door panels. A challenge for the door people, if they read this.
Posted: 09:26 am on January 31st 2013