Browse Forums Heating, Cooling & Insulation 1 Dec 20, 2017 11:25 pm Hi all pro's (of which I am not...), Apologies if I've posted this to the incorrect forum section as it covers a few different areas, please feel free to move etc mods. Scenario: 1929 timber weatherboard. No wall insulation. I want to wrap and batt insulate on one side (other sides will be affected by extension etc so no point just now).I'd really appreciate some advice on the following: Q1: Wiring - House has seen a bit and some wiring runs in front of stud noggins (weatherboard side), some behind (plaster side). I am assuming 'generally' these should be 'ideally' run between plaster and insulation. Keep away from any contact with metalic side of wrap and further away from weather? Further, noggins generally notched to take the cable? Q1a): Wiring and insulation batts - I've seen a number of different techniques here in regards to heating up of wiring etc. In the USA they 'generally' split batts etc to enable the batt to fit properly around wiring (so batt is not compressed etc). In Australia, do we generally run the cable in front of batt (with batt notched a bit to take the wiring comfortably) and allow more breathing space for the wiring (ie. We don't enclose the wiring within the bat by splitting the batt?)? Q2: Air circulation within the wall/condensation etc - This is a compound question which I might have completely wrong... I have three wall air vents running down that side of the house. They seem to contribute to alot of dust and loss of warmth. I understand these were originally largely intended to flue open fires/gas heaters etc. In my research I also see that it is highly recommended that when wrapping/insulating weatherboard walls an "air gap" of about 25mm should be between weatherboards and wrap to aid air movement and minimise condensation on weatherboards. This "gap" is usually retro-fitted by battens on the studs on top of the wrap. However I have windows etc and it will change the lot. I'd really like if I didn't have to do this. I'm not trying to cut corners, it'll just change the project completely... I mention the air vents for this reason. Would it be worthwhile keeping the external air vents if I did not batten the weatherboards (to create the air gap). That is, close up the internal vent but leave the external open. Worthwhile, or a waste of time? To further complicate this I get conflicting advise on the air gap. I see an air gap recommended everywhere on advisory articles and wrap instructions etc. The guy next door is a carpenter and did his own reno (including insulating/wrapping all the original walls at the same time). When I asked re the air gap he had no clue. He's not noticed any condensation problems... He also stated that next to nobody does it on new dwellings (not that he's seen). No, he's not a builder/insulation specialist etc and hence my questions. In the end I guess it depends on many factors (temp in and out of the house, general climate considerations. cladding type, performamce of wrap). So, to answer my own question, an air gap is generally recommended. If you don't you risk condensation issues? Any advice would be greatly appreciated. 0 6295 Old Home Restoration / Renovation Hi, just discovered all these junks left behind under the floor. Could any of these be asbestos? Best to leave as it is or clean up? Thank you for your thoughts 0 8070 Hi all Am new to this forum. I want to get some ideas/info about how to manage an 80 year old factory restoration to convert to a residence. The factory floor is concrete… 0 6342 |