Finished Room Over Garage Insulation
Вставка
- Опубліковано 11 вер 2024
- Check out the blog article that explains this whole process in depth: • Cutting Out a Cased Op...
Chris, from Renovation Semi-Pros, explains the insulation considerations for converting an attic space over the garage to conditioned, finished space.
Good design. It’s amazing how many roofs don’t have the proper venting!
This was excellent in showing what you did and you made sure you got that air space under the roof sheathing so that the intake soffit air will passively flow up to the ridge vent....I did the same with the porch ceiling making it into a cathedral ceiling...1.5 inch air space....next project is the Attic, gambriel roof so lots of room up there. You said you insulated the floor...I guess in a home attic one has to not insulate the floor to allow for air from inside the home to rise into the living space of the attic ... but..you are above a garage so your attic floor is like the basement floor...got it....Thanks for making this vid. You gave me a better idea to use the left over rigid foam pieces instead of the 2 inch short wooden blocks and to use spray foam instead of screw with special washers to hold up the blue rigid foam. By the way, I had 3 layers of rigid foam each 2 inches thick . In Canada it gets cold here so R ceiling value is really important to make it high. 😉🇨🇦🍁
Y’all have inspired me! I am looking at doing the same thing you guys did here. Great video! Looking forward to more, keep up the good work!
3 years later, how has it held up?
Thank you so much for addressing the air flow in this process! NOBODY addresses it on UA-cam.
Is there any further videos or websites you could possibly point me to regarding this?
Edit: Not professional advice - if you want some related information to go research: Ceiling Baffles - this is the product designed for roof air flow. You may also want to research how cathedral ceilings are insulated for additional research. Again, not advice, just sharing some information people may find interesting.
You’ve created a situation where you have two vapor barriers in each cavity because you’ve used faced insulation on top of the foam. This will eventually be problematic, especially if you’re dry-walling against the faced insulation. You should have done foam and unfaced or no foam and just used faced insulation. Also, don’t undervalue soffit vents.
He’s using the foam in the same manner rafter vents would be used. Unfaced insulation may allow moisture to form on the backside of the drywall
can i ask - i don't understand because it looks like he's covering up the ridge vent.
so, you're supposed to let air flow up the soffit vent to the ridge vent right? ok
BUT... I thought the ridge vent was for hot moist air coming up through the house to escape. I don't understand the point in letting air come in from outside (soffit vent) only to then vent up at the top via ridge vent. That is all sealed from the interior space so what's the point?
Great idea! It's almost 2 years later. Are you happy with it? Did it go as planned to keep the room temp moderated and the moisture down?
I understand the foam board and shims cut for air spacing is essentially same as a purchased, pre-formed baffle. Did you compute the cost difference of buying foam board, cutting and installing, compared to just buying baffles and then insulating?
Foam board would be way more expensive but it offers insulation value.
Great idea. Awesome video.
The fiberglass batts are supposed to be stapled to the sides of the rafters
why?
@mar4380 just a preference really. I've always stapled to the sides. It makes it easier to locate the studs for sheetrock.
@@bindig1 doesn't that limit the vapor barrier of the paper ?
@mar4380 keeps the insulation paper from being tight against the sheetrock. A true and effective vapor barrier is plastic sheeting placed over the insulation. Between the insulation and the sheetrock
Was the soffit to ridge vent channel used to prevent heat in the formerly cold attic from melting snow on the roof which can lead to ice dams?
How did the R19 work for you? What region are you in? Is it hot in the summer? Thank you for the video. I am trying to do this now and have been told I have to add extra 2x6's so I can put R38 in other wise the heat will be unbearable.
where are you located?
Virginia. The guy was right. I did the extra 2x6s and the added insulation along with the baffles for the ridge vents made a huge difference. @@mar4380
True. R38 and yes run all the way with 2x6.
Don't you now have a double vapor barrier that will causes condensation?
Only if the surface becomes cold. Might be fine with the insulation
How did you build around the soffit vents to get the most airflow, without sealing them up or covering them?
Good question, Mike. Check out this post we did on the insulation process. We show how we did the baffling. renosemipros.com/insulating-room-over-the-garage/
@@renovationsemi-pros7016 Amazing job! The final projects looks beautiful. Your video was very helpful as I am beginning a similar project in my cape cod. Thank you.
do you need to use both the foam and the batt insulation though?
No, but it's a good system.
where do the exhaust fumes car go?
So, R-24 total? Don't you need R-30 or R-38?
Great question. With the roof shingles, wrap, plywood roof decking, air gap, rigid foam, fiberglass insulation, and the interior finish layer (combined with the reflective value of the spray foil, the R value is around 42.
@@renovationsemi-pros7016 I hadn't even considered the exterior construction material in the R-value calc. Awesome! I'm actually planning to do this to my upstairs conversion. Except I'm planning to add an extra 0.5" foam board on the outside of the rafters to prevent thermal bridging.
@@renovationsemi-pros7016 But, do all the things you mentioned really add up to that much? How much does plywood add? My understanding was that it basically doesn't.
Maybe put those spacers on edge.
Its a baffle. Not a soffit.
so good but id go tight to roof
👍👍🌹🌹
Very sad the this information is incorrect
Never have I heard of such a system.
Professional 40 plus year builder.
Best of luck in life to you.
Never criticize without explaining why it is wrong and providing a suggestion. You are just venting here. Also, this makes "best of luck" sound sarcastic.
Never have I seen someone do something this wrong in the comment section best of luck in life to you bud
It would be nice if you could let us know what is wrong or maybe point us towards some information we could look up.
I'm trying really hard to find out how to properly do this
Too lazy to elaborate. 40 years of doing things wrong.
Just a friendly update: BAFFLES, the answer is that they make a product called BAFFLES.
Google it