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Old 03-27-2019, 05:57 PM   #16
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Re: Enclosed Porch: Insulation between rafters?


They built this wall an top of the ceiling so that wall will have to be reconstructed or something. Maybe just cut the joists and put another plate on top of the joists and build an inner wall.
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Old 03-27-2019, 08:16 PM   #17
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Re: Enclosed Porch: Insulation between rafters?


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Originally Posted by Nealtw View Post
They built this wall an top of the ceiling so that wall will have to be reconstructed or something. Maybe just cut the joists and put another plate on top of the joists and build an inner wall.
Ok ok ok maybe you convinced me to do it this way. Let me run it all past you. So, you are thinking a side vent, like a small gable type vent on the "triangular wall side." Did you have a style/size in mind? My knowledge is pretty limited for those products. And would this vent be all I need or do I really need to cut into the other roof where the box vent is?

With that said, which vertical 2x4 in my attached picture would you take the level ceiling on to? I numbered them and added a horizontal line just to make sure I understand how you recommend extending out a 2x4 for the ceiling. Keep in mind we'd really like the ceiling as high as possible.

Lastly, I attached a picture of the current inside where the roofs meet. If I extend that back bedroom wall straight up, it's falls between 2 rafters (marked with red x's). I rough sketched the framing of that wall extension I'd frame out. The blue lines symbolize the rafters of that back bedroom. I'd just cut into those? Like a 16'' by 1 foot hole? The I'd put plywood (or whatever) over that new mini wall extension and put a vent on that too?

Thanks for all your feedback!
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Old 03-27-2019, 08:50 PM   #18
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Re: Enclosed Porch: Insulation between rafters?


Yes you would cut the old roof sheeting back so the new sx6 studs get nailed to the top plate of the wall below so drywall or what ever is smooth up that wall.

That dead space will get hot in the summer so I do think you want a hole as high as you can get to the left of the left blue line






You understand it is a guess from here but you want a space above the insulation so about 2 or 3" below the rafters at the top would give you a very small space but a space. So what ever thickness of insulation and that 3" gap would be the height of the bottom of the 2x4s My guess it would be between your 2 and 3.
So on that wall just measure down 13" from the bottom of the rafters and draw a level line on the side wall and see what you think of that.

The vent for the side wall I suspect we can find something, the structure for that upper left wall will need to be looked at closely before you can remove the joists.

Once you have the joists out there will be no reason the old piece of roof that was left can't be removed.
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Old 03-28-2019, 06:49 AM   #19
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Re: Enclosed Porch: Insulation between rafters?


Quote:
Originally Posted by Nealtw View Post
Yes you would cut the old roof sheeting back so the new sx6 studs get nailed to the top plate of the wall below so drywall or what ever is smooth up that wall.

That dead space will get hot in the summer so I do think you want a hole as high as you can get to the left of the left blue line






You understand it is a guess from here but you want a space above the insulation so about 2 or 3" below the rafters at the top would give you a very small space but a space. So what ever thickness of insulation and that 3" gap would be the height of the bottom of the 2x4s My guess it would be between your 2 and 3.
So on that wall just measure down 13" from the bottom of the rafters and draw a level line on the side wall and see what you think of that.

The vent for the side wall I suspect we can find something, the structure for that upper left wall will need to be looked at closely before you can remove the joists.

Once you have the joists out there will be no reason the old piece of roof that was left can't be removed.
Alright. The small vent I could find at first glance is 8"x8". Think That'd get the job done? Link below.

The next popular size up looks like 12"x18". This means the mean would be exposed to the tiny attic space I create above the ceiling, but it'd also vent some of the area just below the ceiling too (I think). 18" vertically. This would be fine, right?

By the way, you mentioned 13" inches in your last post. You lost me on that number. Was that your estimate or did you calculate that from somewhere?

https://www.ventmyhouse.com/8-x-8-wh...UaAhNYEALw_wcB

https://express.google.com/u/0/produ...gaAo3eEALw_wcB

Last edited by TimRemo; 03-28-2019 at 06:51 AM.
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Old 03-28-2019, 07:03 AM   #20
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Re: Enclosed Porch: Insulation between rafters?


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Originally Posted by TimRemo View Post
Alright. The small vent I could find at first glance is 8"x8". Think That'd get the job done? Link below.

The next popular size up looks like 12"x18". This means the mean would be exposed to the tiny attic space I create above the ceiling, but it'd also vent some of the area just below the ceiling too (I think). 18" vertically. This would be fine, right?

By the way, you mentioned 13" inches in your last post. You lost me on that number. Was that your estimate or did you calculate that from somewhere?
We are trying to get what ever we can get with the small space under the rafter we are talking about, the vent might be as small as a dryer vent. That's why I think the hole into the other roof will help too.
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