subject:"\[RE\-wrenches\] Metal Truss Roofs"

Re: [RE-wrenches] Metal Truss Roofs

2023-10-30 Thread Daryl DeJoy via RE-wrenches

We have used Marutek molybdenum self tapping screws successfully for the
past fifteen years in the Bahamas on metal truss roofs. On the East Coat,
Manasquan Fasteners is our go-to fastener company.

Daryl DeJoy

On Mon, Oct 30, 2023, 10:46 AM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> I agree that you can get impressive pull-out resistance from fasteners in
> plywood decking only. Two brands that publish pull-out values are
> OMG/Drill-Tec and Blazer. The #15 OMG screws are what we lean toward.
>
> John Mansville also has a "High Load Fastener," but I think it's just a
> rebranded OMG. It comes in #14, #15, and even #21. They have published
> pull-out values that are really high. If you use a base plate with 4
> fasteners with a 3x safety factor, you still get enormous pull-out values.
>
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
>
>
> On Thu, Oct 26, 2023 at 2:06 PM August Goers via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi James,
>>
>> I haven't had an application exactly as you describe with a tile roof /
>> plywood deck over metal trusses. However, we have installed systems with
>> metal roof support structures many times. Metal self-drilling screws have
>> impressive pullouts, so you might be able to use them with any sort of
>> mount that you want that works with the tiles you have on site. We have
>> used ELCO screws in the past, and they are now part of the DeWalt brands,
>> but here is an example:
>>
>> https://anchors.dewalt.com/anchors/products/screw-fasteners/
>>
>> and a Drill-Flex example:
>>
>>
>> https://anchors.dewalt.com/anchors/_documents/uploads/DWANF_DrilFlex-TP-EN-rA_DDS1.pdf?1698346503
>>
>> Some of these fasteners are completely self drilling while others require
>> a pilot hole.
>>
>> Best,
>>
>> August
>> Luminalt
>>
>>
>> On Thu, Oct 26, 2023 at 10:17 AM James Rudolph via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>> Mahalo for your response Sam. That makes me feel a little better.
>>>
>>>
>>> James B. Rudolph
>>>
>>>
>>> Independent Energy
>>>
>>> C-39784 ES #10816
>>>
>>> NABCEP Certified PV Installer since 2009  #091209-155
>>>
>>> C. 808.313.9701
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Oct 26, 2023 at 6:08 AM Sam Haraldson 
>>> wrote:
>>>
 James,

 I can think of one install I performed in 2017 that was a metal roof
 over metal purlins and we opted to through-bolt the entire array using one
 installer on a ladder inside and another on the roof.  We employed butyl
 mastic and large fender washers to attach a strut frame to the roof, and
 then we installed traditional L-feet and rails atop the strut.  I have zero
 experience working with tile so I don't know what your best methodology is
 there but I can attest that the through-bolting has held up well at that
 site the past five years.

 Sincerely,
 Sam Haraldson

 [image: OnSite Energy]
 

 SAM HARALDSON
 Field Operations Director
 (406) 551-6135
 1515 N. Rouse Ave Bozeman, MT 59715
 Locally owned and operated since 2012
 [image: B Corporation]
 

>>> ___
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>>> ___
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
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>>
>> Change listserver email address & settings:
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Re: [RE-wrenches] Metal Truss Roofs

2023-10-30 Thread Jason Szumlanski via RE-wrenches

I agree that you can get impressive pull-out resistance from fasteners in
plywood decking only. Two brands that publish pull-out values are
OMG/Drill-Tec and Blazer. The #15 OMG screws are what we lean toward.

John Mansville also has a "High Load Fastener," but I think it's just a
rebranded OMG. It comes in #14, #15, and even #21. They have published
pull-out values that are really high. If you use a base plate with 4
fasteners with a 3x safety factor, you still get enormous pull-out values.

Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956


On Thu, Oct 26, 2023 at 2:06 PM August Goers via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi James,
>
> I haven't had an application exactly as you describe with a tile roof /
> plywood deck over metal trusses. However, we have installed systems with
> metal roof support structures many times. Metal self-drilling screws have
> impressive pullouts, so you might be able to use them with any sort of
> mount that you want that works with the tiles you have on site. We have
> used ELCO screws in the past, and they are now part of the DeWalt brands,
> but here is an example:
>
> https://anchors.dewalt.com/anchors/products/screw-fasteners/
>
> and a Drill-Flex example:
>
>
> https://anchors.dewalt.com/anchors/_documents/uploads/DWANF_DrilFlex-TP-EN-rA_DDS1.pdf?1698346503
>
> Some of these fasteners are completely self drilling while others require
> a pilot hole.
>
> Best,
>
> August
> Luminalt
>
>
> On Thu, Oct 26, 2023 at 10:17 AM James Rudolph via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Mahalo for your response Sam. That makes me feel a little better.
>>
>>
>> James B. Rudolph
>>
>>
>> Independent Energy
>>
>> C-39784 ES #10816
>>
>> NABCEP Certified PV Installer since 2009  #091209-155
>>
>> C. 808.313.9701
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Thu, Oct 26, 2023 at 6:08 AM Sam Haraldson 
>> wrote:
>>
>>> James,
>>>
>>> I can think of one install I performed in 2017 that was a metal roof
>>> over metal purlins and we opted to through-bolt the entire array using one
>>> installer on a ladder inside and another on the roof.  We employed butyl
>>> mastic and large fender washers to attach a strut frame to the roof, and
>>> then we installed traditional L-feet and rails atop the strut.  I have zero
>>> experience working with tile so I don't know what your best methodology is
>>> there but I can attest that the through-bolting has held up well at that
>>> site the past five years.
>>>
>>> Sincerely,
>>> Sam Haraldson
>>>
>>> [image: OnSite Energy]
>>> 
>>>
>>> SAM HARALDSON
>>> Field Operations Director
>>> (406) 551-6135
>>> 1515 N. Rouse Ave Bozeman, MT 59715
>>> Locally owned and operated since 2012
>>> [image: B Corporation]
>>> 
>>>
>> ___
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
>> List Address: RE-wrenches@lists.re-wrenches.org
>>
>> Change listserver email address & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> There are two list archives for searching. When one doesn't work, try the
>> other:
>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules & etiquette:
>> http://www.re-wrenches.org/etiquette.htm
>>
>> Check out or update participant bios:
>> http://www.members.re-wrenches.org
>>
>> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change listserver email address & settings:
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Re: [RE-wrenches] Metal Truss Roofs

2023-10-26 Thread August Goers via RE-wrenches

Hi James,

I haven't had an application exactly as you describe with a tile roof /
plywood deck over metal trusses. However, we have installed systems with
metal roof support structures many times. Metal self-drilling screws have
impressive pullouts, so you might be able to use them with any sort of
mount that you want that works with the tiles you have on site. We have
used ELCO screws in the past, and they are now part of the DeWalt brands,
but here is an example:

https://anchors.dewalt.com/anchors/products/screw-fasteners/

and a Drill-Flex example:

https://anchors.dewalt.com/anchors/_documents/uploads/DWANF_DrilFlex-TP-EN-rA_DDS1.pdf?1698346503

Some of these fasteners are completely self drilling while others require a
pilot hole.

Best,

August
Luminalt


On Thu, Oct 26, 2023 at 10:17 AM James Rudolph via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Mahalo for your response Sam. That makes me feel a little better.
>
>
> James B. Rudolph
>
>
> Independent Energy
>
> C-39784 ES #10816
>
> NABCEP Certified PV Installer since 2009  #091209-155
>
> C. 808.313.9701
>
>
>
>
>
>
>
>
>
>
>
>
>
> On Thu, Oct 26, 2023 at 6:08 AM Sam Haraldson 
> wrote:
>
>> James,
>>
>> I can think of one install I performed in 2017 that was a metal roof over
>> metal purlins and we opted to through-bolt the entire array using one
>> installer on a ladder inside and another on the roof.  We employed butyl
>> mastic and large fender washers to attach a strut frame to the roof, and
>> then we installed traditional L-feet and rails atop the strut.  I have zero
>> experience working with tile so I don't know what your best methodology is
>> there but I can attest that the through-bolting has held up well at that
>> site the past five years.
>>
>> Sincerely,
>> Sam Haraldson
>>
>> [image: OnSite Energy]
>> 
>>
>> SAM HARALDSON
>> Field Operations Director
>> (406) 551-6135
>> 1515 N. Rouse Ave Bozeman, MT 59715
>> Locally owned and operated since 2012
>> [image: B Corporation]
>> 
>>
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> http://www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> http://www.members.re-wrenches.org
>
>
___
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Re: [RE-wrenches] Metal Truss Roofs

2023-10-26 Thread James Rudolph via RE-wrenches

Mahalo for your response Sam. That makes me feel a little better.


James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701













On Thu, Oct 26, 2023 at 6:08 AM Sam Haraldson 
wrote:

> James,
>
> I can think of one install I performed in 2017 that was a metal roof over
> metal purlins and we opted to through-bolt the entire array using one
> installer on a ladder inside and another on the roof.  We employed butyl
> mastic and large fender washers to attach a strut frame to the roof, and
> then we installed traditional L-feet and rails atop the strut.  I have zero
> experience working with tile so I don't know what your best methodology is
> there but I can attest that the through-bolting has held up well at that
> site the past five years.
>
> Sincerely,
> Sam Haraldson
>
> [image: OnSite Energy]
> 
>
> SAM HARALDSON
> Field Operations Director
> (406) 551-6135
> 1515 N. Rouse Ave Bozeman, MT 59715
> Locally owned and operated since 2012
> [image: B Corporation]
> 
>
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Re: [RE-wrenches] Metal Truss Roofs

2023-10-26 Thread Sam Haraldson via RE-wrenches

James,

I can think of one install I performed in 2017 that was a metal roof over
metal purlins and we opted to through-bolt the entire array using one
installer on a ladder inside and another on the roof.  We employed butyl
mastic and large fender washers to attach a strut frame to the roof, and
then we installed traditional L-feet and rails atop the strut.  I have zero
experience working with tile so I don't know what your best methodology is
there but I can attest that the through-bolting has held up well at that
site the past five years.

Sincerely,
Sam Haraldson

[image: OnSite Energy]


SAM HARALDSON
Field Operations Director
(406) 551-6135
1515 N. Rouse Ave Bozeman, MT 59715
Locally owned and operated since 2012
[image: B Corporation]

___
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[RE-wrenches] Metal Truss Roofs

2023-10-25 Thread James Rudolph via RE-wrenches

Aloha Wrenches,

I have a good for the group. Does anyone know a lag/fastener other than
EJOT that could be used to install PV to a home with metal trusses? To
complicate things the roof is tile and the decking is 1/2" ply.
We do have access to the attic, but in only half the house because of the
cathedral ceilings.  I am thinking of reducing the array size and doing
through bolts that would have to be fastened from inside the attic.
Please let me know if anyone has an idea or solution here.

Good times.


Mahalo in advance.


James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701
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Re: [RE-wrenches] Metal Truss Roofs

Re: [RE-wrenches] Metal Truss Roofs

Re: [RE-wrenches] Metal Truss Roofs

Re: [RE-wrenches] Metal Truss Roofs

Re: [RE-wrenches] Metal Truss Roofs

[RE-wrenches] Metal Truss Roofs

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