Has anyone used thermozite to replace old insulation in engine bay? I wonder what foretravel uses on refub?
The old insulation burns quickly and very hot. I pulled ours and put a layer of FG and then covered with Hardie Backerboard with stainless screws and washers to hold it on. Good to do in the generator compartment and fridge too.
Pierce
Pierce
What are calling dog?
Ken
I hate auto correct. Meant to say what are calling fg?
Fiber Glass
Wasn't that in the news yesterday? :) :) Yes, I just went to HD and picked up a roll of R19 and then compressed it under the Backerboard. I primed it and then painted it with semi-gloss white latex. Won't absorb grease this way. Bedroom seems to say cooler after stopping in the summer. One member lost his U300 when the turbo outlet came off after some shop maintenance went south. He saw black smoke in the mirror. Pulled over and just had time to get out.
Pierce
Pierce,
I like the looks of your installation! How heavy is that Backerboard? That's a pretty good sized sheet of material above the engine, and our mattress platform already feels like it weighs a ton (or close to it) when I lift it. Perhaps we just need to get a Sleep Number...
Chuck 1/4" DraRock weighs about 2# per sqft... scales up too if you have 1/2" backer
It is 1/4 inch and has a pillow top queen on top. I don't have any problem lifting it but it would be nice to have larger struts but I don't notice that much difference from before. I keep a big stick to prop it open in the compartment with the electrical stuff on the driver's side. Nothing will burn through this stuff.
Pierce
Mine is in pretty decent condition, no rips etc. When I do decide to upgrade, it will be with Fire Rated ply, or some other Thin lightweight Fireproof material with Lizard Skin Ceramic Spray on top.
Typically used on Racecars/Restorods, etc. I used it when I had a Car "Problem" . This stuff is awesome and should be good for this application.
| LizardSkin (https://www.lizardskin.com/car-ceramic-insulation.html)
Dump some bricquettes from your next bbq on a piece of 1/4 Hardy over a piece of plywood and get back to me on this. Not trying to be a buzzkill, and not saying it won't do the job on a motorhome but it has far less fire resistance than I had thought.
Chuck,
I used 1/4" inch on our coach. I have a piece on my welding bench and use the wire feed, oxyacetylene welding and copper soldering using MAPP gas. I've turned the torch directly on it and not had it deteriorate in any way. I like it because it does not seem to conduct much heat to the other side so I can rest my hand close and not get burned.
Tomorrow, I will take a piece and put the MAPP gas torch to one side and shoot the other with my IR gun and record it with a couple of photos and report back.
Good subject!
Pierce
Pierce, nothing scientific about my opinion. Here's my experience.
After a great offshore outing, we had a party on the deck....I cooked Thai seasoned fish kebabs, using an old smokey joe cooker, and natural chunk charcoal. This small cooker was sitting on a piece of 1/4 hardy on a plywood table. Fire was damped down, covered, air intakes closed. Anyhow, after far too much celebratory behavior, everyone hit the sack..
I woke up in the morning and found.....the bottom of the old galvanized steel cooker had finally given out and what remained of the charcoal had dropped onto the hardy, burned through it, burned through the plywood table, burned through the 2X6 3rd floor deck, burned through the 2X6 2nd floor deck, and dropped down into the watergarden on ground floor. I gave thanks to the Gods who protect fools and made note of the almost perfectly round 8" hole through all materials. J. Hardie co. states that 1/4 backerboard can be a component in a one hour wall. Don't think, but could be wrong, that it has a fire rating as stand alone mtl.
Several of us Wanderlodge folks have used 1" duct board. The foil is easy to keep clean and does a pretty good job of insulating. I just did my generator compartment with it. Make sure to tape the raw edges with metal tape.
TOM