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-   -   Yurt Dome Insulation Install and Condensation (https://www.yurtforum.com/forums/yurt-living-f2/yurt-dome-insulation-install-and-condensation-192.html)

homesweetyurt 10-29-2013 09:19 PM

Re: Dome Insulation Install and Condensation
We used rmax? Some of it stayed on it's own if we cut it well. We used some scrap boards across multiple rafters to hold the middles up as we worked.

Each section needed two pieces, the bottom (at the wall) stays on it's own and the very top (at the dome) was a tight enough fit to stay also. It was where the two pieces met in the middle that needed some support - not all of them though, some stay on their own.

We haven't decided on a ceiling yet, but whatever we use will hold them up more permanently then the scrap wood.

Any brilliant ceiling ideas? (cheap, DIY, and attractive)

Corinarose 10-29-2013 10:29 PM

Re: Dome Insulation Install and Condensation
How about a parachute? They sell them used online

MT Rod 10-30-2013 07:04 AM

Re: Dome Insulation Install and Condensation
I am going to jump in the discussion here, but I am a little hesitant. Think of this as market research, not as marketing to the group which I am trying to avoid doing. This really seems like the right place in the discussion to bring it up.

The condensation issue has been one of my interests here. I have had trouble with condensation, mildew and mould in the past in conventional (but poorly) insulated housing, and I think it is a good topic for all yurt-folk, yurt-oholics and yurticians to think about. My wife and I both have issues, maybe allergies (but maybe not), involving mildew and mould, though my wife's are more severe. Fans, heaters, dehumidifiers, I have used then all.

In the past I have dealt with the problem by making a space behind all the furniture and such, to keep it at least 2" from the wall, and then using/making air flow along the wall so that condensation can't build up easily. Forced air heating is a bit wasteful in energy, but it is helpful in keeping down the amount of condensation.

I am really curious to hear from some of the yurticians who live with radiant floor heating. Does this seem to help with the condensation issue? The only yurts I have been around in very cold weather used wood or coal heat, and they are both famous/infamous for drying out the air inside your space. A notably good thing in a yurt, but I am really interested in the radiant floor heating idea. If the heat source was propane, and it was inside, I can see where that might add to the problem if it wasn't vented.

Now for the market research I was mentioning. Last weekend I attended the Canton Trade Fair.

One of the companies I talked to makes a 12 volt multi-speed (3? 5? I don't remember now), ceiling fan with a remote control. I was intrigued by the idea and have really been thinking about sending some to the states as a test case.

Using an 80 watt solar panel and a 12 volt 50AH battery, they say it will fully recharge in a "day", (but a solar day varies greatly depending on where you are and time of year), and it says it can run for 10+ hours on a charge, somewhat dependant on what speed you chose to run it.

There is no light in this fan like you sometimes see in ceiling fans but I am not sure why not. 12V LEDs are common and could use very little additional power depending on their choice.

It can come with a 120V to 12V transformer so if you have grid, or need to use your generator to top off your batteries after a string of dull days, but I can't see any advantage to a 12V DC product if you have grid power.

I am ordering a sample fan this afternoon to have a look for myself at the quality of the product, and I will set it up in my solar laboratory.... the clothes drying porch. Apartment living makes me a little crazy, and I think me in an apartment makes my wife a little crazy.

Pricing should work out to be in the neighborhood of $85 - $99. and it does not come with the solar panel or battery. I'm not too excited, because it might turn out to be a piece of poop, but I won't know until I look.

Summer or winter, I think it could be a good thing. I have been looking for something like this so I can use it in my own (off grid) yurt.

They also make 12V desk and standing rechargeable fans, but at this point they are't too interesting to me.

On a (even further to the) side note, the Canton Fair is a lot of fun, It helps me keep my sanity here. I get there one day every 6 months, and it is a huge show. It covers 15 acres, several floors deep, the products change every week, and it lasts for 3 weeks, 2 times a year. They have lots of stuff to look at and I get to see only one tiny little part in a day.

I have several new 12V LED things to play with that I brought back from the show. I just need more time to play. Someday...

Home Page.

lizsteve 10-30-2013 10:57 AM

Re: Dome Insulation Install and Condensation
Re: covering insulation. We're also looking at parachutes. There's a small handful of large enough non-rainbow colored ones I have seen. Not super cheap but not too pricey compared to fabric from a store. I have seen $200-300. I like the idea of painters fabric. On top of the fabric we plan to put a thin strip of wood on each rafter to hold the parachute up and keep the feel of having the visual rafters look.

We have been living in our for a year+ so also have already installed the winter package. Interesting thought to move the rafters and studs so they are all equal distance apart AND then do the foam. We have installed a lot of shelving within studs though, so we still will have some funky sizes.

I'm worried about little foam specs falling all over our house...

We're also going to install a fan up the dome. More to keep heat down, but I suppose it might help with condensation.

BCyurt 11-21-2013 01:34 PM

Re: Dome Insulation Install and Condensation
We have fixed our condensation problem in the back bedrooms along the bottom of the wall where it meet the drip edge. i lifted up the side cover and cut strips of bat style insulation about 3" x 1" thick to seal the gap and it has solved the problem. I think I will also seal the valance the same way.

Gypsykat23 11-24-2013 05:30 PM

Re: Dome Insulation Install and Condensation
Hi I am having the same problem. It is driving me crazy. I insulated the ceiling with traditional insulation and covored it with thin plywood door skin. It looks and works great but has started dripping all over. I open the dome all the time but it still drips around the edges and cracks seams. What a mess we are in and just the start of winter. contact me if you want [email protected]

Jafo 11-24-2013 05:36 PM

Re: Dome Insulation Install and Condensation
Is there a space between the insulation and the roof? I would think you would need this space so the air inside could travel up to the opened dome.

homesweetyurt 11-24-2013 05:48 PM

Re: Dome Insulation Install and Condensation
We spent the weekend filling all the edges of the rafters with expanding foam and are hoping it will work to keep any warm air from getting up above the insulation. (We just have a few more spots to do once we get more foam from town tomorrow.)

I'll keep you posted and let you know if it works or not. I think it may take at least a few days to see a significant reduction in the dripping.

Gypsykat23 11-24-2013 05:54 PM

Re: Dome Insulation Install and Condensation
I did not leave a space between the skin and the insulation. I just thought by filling the space it would be air tight and not let moisture in. When its cold there is actually a thin sheet of ice on the inside of the skin. Its a yurtigloo. Yay. I am worried about mold but it to cold to take it out?

Jafo 11-24-2013 06:31 PM

Re: Dome Insulation Install and Condensation
Heat will always get through no matter what you do, and when it touches the cold skin, it will create condensation. That is why you always leave space in the attic of a house. Well, maybe somebody else has dealt with this before and has a better idea, but I would think there would have to be a gab between the insulation and the roof and then a way for the air in between to circulate outside.

Also, I should note that I have no condensation issues, but I am just using the reflectix insulation.

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