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15th Apr 2020, 09:18 PM #16
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16th Apr 2020, 07:05 AM #17Diamond Member
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- Oct 2011
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- Sydney, NSW
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- 1,249
I had a look at the malimine, but I'll probably do everything myself (Corvid-19) and probably just be standing on a work table and climbing through the trusses. So I think it may be too heavy for me to lift into place and secure. Plus there will be a lot of cutting out to fit the sheets.
Ben.
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16th Apr 2020, 07:44 AM #18Senior Member
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- Jul 2011
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- Berowra Waters
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- 149
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16th Apr 2020, 09:38 AM #19Most Valued Member
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- Jul 2006
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- Athelstone, SA 5076
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- 4,255
also paint the walls white...it will reflect light as someone else above for floor
spray painting it wont take long
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16th Apr 2020, 06:10 PM #20Senior Member
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- Nov 2011
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- Port Sephens NSW Southside
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- 123
Ben
Check out Trademaster at 46-52 Ferndell St, South Granville, if it's not to far, depending on where you work.
https://trademaster.com.au/
I picked up a 25mm sheet of MDF 1800 x 1200 a couple years ago for $30.
JohnQ
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16th Apr 2020, 08:03 PM #21Senior Member
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- Jul 2011
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- Berowra Waters
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- 149
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17th Apr 2020, 08:39 AM #22Diamond Member
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- Oct 2011
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- Sydney, NSW
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- 1,249
I bought a pack of polystyrene insulation from Bunnings. It was 470 mm wide and 1200 mm long. You just break off the extra edge to make it fit, messy but works well. It is meant for under floor insulation but it will do the job.
I'm still thinking of 6 mm thick MDF sheets as it Cheap, light and easy to fix to the trusses. I'm not worried about moisture getting into it as it's pretty dry in there and I've noticed any leaks (so far).
Ben.
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17th Apr 2020, 10:41 AM #23Senior Member
- Join Date
- Dec 2009
- Location
- Melbourne
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- 134
6mm MDF will bow from ambient humidity plus gravity.
I would splash the very minimal amount more for the Melamine sheet, and what the sheets cost extra you will save in sealing and paint costs.
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17th Apr 2020, 12:28 PM #24Most Valued Member
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- Nov 2017
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- Geelong, Australia
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- 57
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- 2,651
The 6mm MDF is 14kg per 2.4x1.2 sheet and $23 from Bunnings.
4mm brace ply as Racingtadpole suggested earlier is 7.3kg per sheet, and $27.
Up to you, but I know which I'd be using!!
Steve
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17th Apr 2020, 01:01 PM #25Senior Member
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- Dec 2009
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- Melbourne
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- 134
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17th Apr 2020, 03:24 PM #26Senior Member
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- Dec 2010
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- Syd
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- 492
Mate up a bit beyond Nth Richmond runs water on his roof during the summer months, recirculating water tank and pump. On those mid 40 degree days another friend measured the roof temps without water on his tin shed with an IR thermometer - CNC won't run at those temps. He's got the usual foil backed insulation in place on the concrete tiled one, but possums love getting between that and the tiles to sleep during the day in the cooler months.....and leave their calling cards all over the floor at night.
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18th Apr 2020, 09:18 AM #27Diamond Member
- Join Date
- Oct 2011
- Location
- Sydney, NSW
- Posts
- 1,249
HI,
I'm lucky that my garage is tiled and not a metal roof, it's also high enough to let the heat escape. There's four of the brick inserts that have the holes in them around the garage at about the 2 metre mark, plus a door, window and the garage door so I can get plenty of circulation. I'd hate to be in a normal sized garden shed or such. Last year out at the RAAF base we had some 45 degree plus days and it was unbearable.
I did half of the polystyrene insulation yesterday, it looks better than I thought. The temperate felt cooler but it wasn't a particularly warm day, about 28 degrees. I didn't notice any bird or rat nests in the rafters yesterday but I did find an empty old wine bottle someone had stashed up there.
Ben.
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19th Apr 2020, 11:01 AM #28
Do not use polystyrene! One spark one overheated electrical cable, plug, light and you'll be building from scratch not to mention tools gone.
Oh well to late I see your post above just now
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19th Apr 2020, 11:06 AM #29
Leaks may not be the problem condensation however will be using polystyrene. It also will retain the heat & cold inside like a cool/esky etc does
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19th Apr 2020, 06:39 PM #30
Hi Ben,
I have one of those 5 foot long, 200 Watt tubular frost heaters, that is connected to a 40 F thermostat. It only comes on when the shed temperature gets low enough to cause condensation. The shed temperature very rarely gets below 45 F so the heater doesn't come on too often.
It spends its time on the floor at the back of the workshop, in the gangway, so far I've not managed to trip over it.Best Regards:
Baron J.