Browse Forums Heating, Cooling & Insulation 1 Aug 27, 2021 12:27 pm We have a mudbrick house in NE Melbourne. Roof is corrugated metal, raked ceilings with timber lining (not plasterboard). Need to remove old insulation as water has got in under ridge capping in parts & has damaged insulation. Being a raked ceiling there is limited space between ceiling lining & metal roof sheeting- fortunately the builder was intelligent enough to add the same 35mm-ish roof batten timber as 'chocks' about 500mm apart under the roof battens effectively giving a roof/ceiling space height of a bit over 70mm. There is blue backed silver paper on the timber ceiling with bradford batts on top that have been squashed by the roof sheeting (no gap so no wonder (apart from the wet damage) this room is always super hot in summer & freezing in winter). I want to avoid pulling up the existing silver paper as it's only some of the insulation that needs replacing- about 20sqmtr worth. But it's very difficult to find stock of non silver paper insulation that is just thin enough to leave the important gap. Any suggestions to get the best outcome (higher R rating as possible in this confined scenario....? Many thanks for any replies. Paul Re: Roof / Ceiling Insulation - raked ceilings - metal sheet 2Aug 27, 2021 1:15 pm was also thinking after doing some more research- the Kingspan AirCell InsulBreak over the top of the battens (I need to take the roof sheets off anyway to do the job being a raked ceiling), and then use a EarthWool type product on ceiling lining ... ? Re: Roof / Ceiling Insulation - raked ceilings - metal sheet 3Oct 10, 2021 2:16 am Paul O was also thinking after doing some more research- the Kingspan AirCell InsulBreak over the top of the battens (I need to take the roof sheets off anyway to do the job being a raked ceiling), and then use a EarthWool type product on ceiling lining ... ? Can I ask what you went with? I'm replacing my asbestos roof and ceilings soon. I've raked ceiling with exposed beams, in qld and getting colourbond roof. I want the best i can get They've quoted to anticon. Re: Roof / Ceiling Insulation - raked ceilings - metal sheet 4Oct 10, 2021 12:40 pm Ren25 - I haven't managed to progress on this - lockdown in Melbourne & work have held me up! By co-incidence I have just flicked off an email to a chap at Knauf who did reply to me earlier on, re using & sourcing the 60mm Earthwool NON foil blanket.... Paul Thanks. Yeh ideally that would have been good, but have progressed too far now. Hoping some well placed internal walls fixed up into the battens will provide some… 2 5407 Found the answer. The recommended distance is .... 1 5988 Thanks mate. Yeah good points! Leaning towards Option 3 to get a bit extra space in the cabinets but not going too crazy high (and expensive). Would require a mini… 13 39728 |