Hi, just looking for some advice/feedback on my interior renovation plans. I own a 1970's bungalow in Nova Scotia. I am renovating on a small budget one room at a time starting with the bedrooms. The last item to be replaced or upgraded will be the buildings exterior which is in great shape (aluminum siding). My plan is (one room at a time) to thicken the existing exterior 2x4 walls to 2x6, add new Roxul Insulation and an Intello Plus Barrier then new sheet rock. I have just had a new window installed in the first room I going to work on, so now I'm ready to strip the walls down and do the planned work. Before I do though, I just wanted a sanity check! Couple of points: -Planning on thickening walls by adding 2 inches to existing studs with some thin ply plates to hold everything in place. -Using Intello Plus to help walls dry to interior (currently they have no vb and are in great dry condition) -I have retro fitted ventilation fans Lunos in Basement & Soler/Palau 150s in ducts) to move air around my house from the warmer parts to the colder (bedrooms). Installing a central HRV simply too costly at this time for me. The fans are doing a great job of moving fresh air about the house and warming up those rooms. My basement is heated with a wood stove, so the fans move that heat up into living space and return it via bedroom ducts. Working well so far...bedrooms are warmer & better ventilated. My concerns are: -Do I really need to thicken the walls? (not much extra cost) -Is Intello Plus the best product for this renovation? -Should I use 1x3 x 1/2 inch horizontal strapping between the barrier and sheetrock. (I have seen it done and thought it a good idea to reduce penetrations. Any advise is most welcome, just keep in mind I have small budget, not touching building exterior for years to come (roof is new!) and I already have the intello plus/tape/caulk purchased. And I plan on taking my time to install the insulation as best I can.

Adding 2" of Roxul sheet goods and covering the studs should cut down on your thermal bridging and increase your wall R value. But that's not the place I'd start. First, deal with infiltration which can be up to half of your heat loss. Second, possibly the windows if they are real bad, or the basement, where you should think about insulating the basement walls, and the roof/attic. I'd suggest leaving the walls til last unless they are very poorly insulated, or if by doing them you can address significant infiltration.

Thanks. Yes the basement and loft will be addressed. Going to add some insulation up there as I do each room. The walls feel cold to touch in the winter months (particularly on the north facing side), not surprising as they only 2x4's. So adding the 2 inches should do well to improving that. Just wanted to check the details above sounded about right. Especially the horizontal strapping between vp and sheetrock.