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Old_school (Old_school)
Senior Member
Username: Old_school

Post Number: 601
Registered: 01-2009
Posted on Monday, March 21, 2011 - 08:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

That looks like an installation over in Europe with the clips and such.
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Slate_man (Slate_man)
Senior Member
Username: Slate_man

Post Number: 646
Registered: 01-2007
Posted on Monday, March 21, 2011 - 08:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I have not installed these. I may have ajob this year that may on part of the roof.
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Lucerne96 (Lucerne96)
Junior Member
Username: Lucerne96

Post Number: 11
Registered: 03-2011
Posted on Wednesday, March 16, 2011 - 09:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Are those solar pv slates?

Do you have and independent experience regarding performance?
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Slate_man (Slate_man)
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Username: Slate_man

Post Number: 645
Registered: 01-2007
Posted on Wednesday, March 16, 2011 - 08:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

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Slate_man (Slate_man)
Senior Member
Username: Slate_man

Post Number: 644
Registered: 01-2007
Posted on Wednesday, March 16, 2011 - 08:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Look up Dawn Solar!
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Lucerne96 (Lucerne96)
New member
Username: Lucerne96

Post Number: 8
Registered: 03-2011
Posted on Saturday, March 12, 2011 - 02:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Actually, I am planning on making a "heat battery" under my adjacent driveway. I am thinking of digging a hole under the driveway (which I was going to replace anyway) perhaps 8 X 12 x 8; line it with foamglas, sprayfoam the interior, then fill it full of sand interspersed with layers of PEX tubing. When finished the "heat battery" would be connected to pex laid just under the surface of the asphalt driveway & also a run coming from the 3rd floor behind the south facing mansard. Heat could thus be "stored" for use in winter to either heat the driveway (no shoveling), or run a shunt into the house for underfloor radiant heat in the first floor.
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Old_school (Old_school)
Senior Member
Username: Old_school

Post Number: 598
Registered: 01-2009
Posted on Saturday, March 12, 2011 - 09:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

If you can get to the back side of the mansard from the inside of the attic, and the wood sheeting is slightly spaced, you could easily slip the pex pipe into theose slots so that the pipe makes contact with the backs of the slates, without harming the slates. The longer the piece of pex pipe is however, the more hassle it is going to be to "thread" it into the space and make the turns.

Looking at the picture on the previous thread it looks like your second story behind the mansard is finished so you will have trouble making that work. If on the other hand, you were removing the slates to replace the gutter and such, you could do all of that from outside and it should work just fine. Interesting way to do it! If you do that, make sure to presurize the hose before you start to install the slates so that you will know imediately if you drive a nail into one of the hoses. We have done a lot of the in floor heating with the pex, and if you pour the concrete over it and it has a hole, you only have about 20 minutes to fix it before you are SOL. With the slate, you just want to fix it when you hole it. Good luck!
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Lucerne96 (Lucerne96)
New member
Username: Lucerne96

Post Number: 4
Registered: 03-2011
Posted on Friday, March 11, 2011 - 09:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I was thinking of running the pex behind the entire south facing wall, which is about 60' x 8', minus two dormer windows.
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Old_school (Old_school)
Senior Member
Username: Old_school

Post Number: 596
Registered: 01-2009
Posted on Friday, March 11, 2011 - 08:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

How big are you planning on making it? You could make a solar collector with a big old piece of slate blackboard. Someone was trying to sell a couple on here a few months ago.

Build a frame for the slate board and run the pex tubing on the top of it and then place a glass surface over the top. It will boil water in short order
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Lucerne96 (Lucerne96)
New member
Username: Lucerne96

Post Number: 2
Registered: 03-2011
Posted on Friday, March 11, 2011 - 12:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Has anyone had experience using a slate roof as a solar absorber as part of a solar hydronic system?

I was thinking about building a slate roof on a wood lath deck & running some high temperature pex tubing behind the slate to pull the heat off the slate.

Any comments?

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