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Solar Roof Installation Tips

MXDogCrate

Member
Aug 27, 2018
118
36
California
Powerwall guys arrived today. They mounted the inverter boxes too low and these will need to be relocated higher in order to accomodate the PWs.

They just informed us because the unit doesn’t have a scroll compressor it cannot be backed up by two PWs. Pretty sad about this.

Also, is this bubbling normal with underlayment?
 

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wjgjr

Active Member
May 11, 2020
1,331
1,051
Silver Spring, MD
Powerwall guys arrived today. They mounted the inverter boxes too low and these will need to be relocated higher in order to accomodate the PWs.

They just informed us because the unit doesn’t have a scroll compressor it cannot be backed up by two PWs. Pretty sad about this.

Also, is this bubbling normal with underlayment?
Sounds like not the best day - they should have known where the PWs were going and mounted the inverters accordingly (certainly in our install, they had everything mapped out before installing all the new panels and equipment.) Sucks on the A/C, but that is the way it goes. I know you mentioned in another thread its age - if it is something you might consider replacing soon (even though it is working well now, it is older, and you can get a much more efficient one,) might be worth letting the electrician know to see if can be accommodated in the electrical work so that it would be easy to add a new A/C to the backed up loads.

That bubbling is not something I ever saw on our install. We did have the Firestone, but it was always perfectly flat.
 

jboy210

Supporting Member
Supporting Member
Dec 2, 2016
5,489
3,480
Northern California
Powerwall guys arrived today. They mounted the inverter boxes too low and these will need to be relocated higher in order to accomodate the PWs.

They just informed us because the unit doesn’t have a scroll compressor it cannot be backed up by two PWs. Pretty sad about this.

Also, is this bubbling normal with underlayment?

No bubbling on our underlayment. The Firestone stuff is sticky and relatively thick.
 

DagonR

Member
Oct 14, 2020
5
0
Melbourne, FL
@MXDogCrate @marty2112 Here is a copy of my latest design doc from September. Page 5 has the components where the underlayment is shown. I have received several design revisions, and each included all these pages shown. I've had a look at other solar roof permit applications and a similar file with these details is included with the permit applications.
 

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DagonR

Member
Oct 14, 2020
5
0
Melbourne, FL
Powerwall guys arrived today. They mounted the inverter boxes too low and these will need to be relocated higher in order to accomodate the PWs.

They just informed us because the unit doesn’t have a scroll compressor it cannot be backed up by two PWs. Pretty sad about this.

Also, is this bubbling normal with underlayment?

I'm certainly no expert, but have looked at quite a bit of underlayment photos and examples over the past week to know that that bubbling does not look right. Hopefully they smooth it out before the tiles go on.
 

MXDogCrate

Member
Aug 27, 2018
118
36
California
@jboy210 They used the Firestone scraps to cover some of their flat work services. The Cobalt is thicker and super tacky. Not sure if that’s better.

@marty2112 Looking at your pictures, you have some bubbling as well. I have a text into my lead and he’s looking into it.

@DagonR We received the layout akin to your first page, but not the following pages.
 

dhquigley

Member
May 21, 2020
85
41
Brookeville, MD
The bubbling is normal. I talked with the roofer about it as they were installing and he explained why you might get some puckering but also (on the Firestone) why it did not matter given the double layer (which, in fact, is part of the reason for the puckering). If it gets too bad, they can cut it and relay it, but they prefer not to do it if they don't have to.
 
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marty2112

Member
Apr 6, 2015
287
206
Petaluma, CA
Sorry to go a bit off-topic, but your garage looks great - what is the brand of your wallmount cabinets and toolchests? Hanging cabinets are plentiful, but I've been looking for wallmount drawer toolchests, which are hard to find...

Cabinets by Hayley. Mike Wright. Amazing build quality

HC Garage Series Products - Cabinets by Hayley

They are based out of Calgary. I went a little overboard on the garage....

Workbench/wall locker is not supposed to be mounted without feet, but just had to do it.

Some older pics before the PW install.
 

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marty2112

Member
Apr 6, 2015
287
206
Petaluma, CA
@jboy210 They used the Firestone scraps to cover some of their flat work services. The Cobalt is thicker and super tacky. Not sure if that’s better.

@marty2112 Looking at your pictures, you have some bubbling as well. I have a text into my lead and he’s looking into it.

@DagonR We received the layout akin to your first page, but not the following pages.

Same for me. I only can see the first page via my Tesla account page.
 

marty2112

Member
Apr 6, 2015
287
206
Petaluma, CA
The bubbling is normal. I talked with the roofer about it as they were installing and he explained why you might get some puckering but also (on the Firestone) why it did not matter given the double layer (which, in fact, is part of the reason for the puckering). If it gets too bad, they can cut it and relay it, but they prefer not to do it if they don't have to.

I have both bubbling and what I call pilling. Project lead said it is normal and will not cause any issues.
 
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marty2112

Member
Apr 6, 2015
287
206
Petaluma, CA
Here was the section that had a bunch of pilling. Guys are almost repelling....

If anyone is curious on the build specs of one of the tiles.
 

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marty2112

Member
Apr 6, 2015
287
206
Petaluma, CA
Day #6...

Good progress. Would say that about half way there. Super meticulous and impressed with how well the crew works together.

Love all the attention to the details. This is the most I have seen of my neighbors in months....
 

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marty2112

Member
Apr 6, 2015
287
206
Petaluma, CA
Did they have to remove some of the siding to get the roof installed?

No. We are having all are windows replaced, so that is why you see the siding being compromised. They do have to remove a couple of inches to accommodate the flashing that meets the roof line.

here is the best pic.
 

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MXDogCrate

Member
Aug 27, 2018
118
36
California
Do these tiles look uneven to anyone?

It wouldn’t concern me as much except these are at the front of the house.
 

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