Best home insulation?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

doctorjj

Sharpshooter
Special Hen
Joined
Apr 16, 2009
Messages
7,041
Reaction score
1,178
Location
Pryor
This is an educational thread on insulation and has answered a lot of questions for me and I'm sure others. I have those leaky can lights in our house around 16 of them and I put those retrofit LED lights in to reduce heat plus they last longer than bulbs but still, they have the air leaks. so , I'm building styrofoam boxes out of 4X8 sheets and I'm going to put them over every can light in the attic I can reach. Only reason I'm posting this is to see if someone else has the same problem and how they solved their coolant and heat loss.
You can buy airtight reflectors and foam seals for where they meet the drywall. You don’t have to replace the actual recessed fixture with an airtight fixture. You do need to make sure they are IC rated (insulation contact) or you have to build boxes around them in your attic to prevent insulation for touching the cans. Retrofit LED’s should eliminate that as a necessity since they don’t generate nearly as much heat but I would not trust that for sure.
 

rawhide

Sharpshooter
Supporting Member
Special Hen Supporter
Joined
Mar 12, 2008
Messages
4,234
Reaction score
1,310
Location
Lincoln Co.
Serious question. What does your wife know about spray foam insulation? Or did she only read "horror stories" from the internet? The reality is that spray foam can be the best insulation for home you will find. With any popular building trend, you will have any yahoo that happens to have a contractors license think he knows how to spray foam into walls and ceiling joists. Your job or the job of the general contractor is to make sure the spray foam installer is experienced, knows what he is doing and can effectively answer any and all questions and concerns you or your wife have on the product, installation, etc.

On a new build I would never do a blown in insulation. Just doesn't make sense. Especially if you have to come back in a couple years and have it done again due to settling.

If im building in OK I'm doing minimum 2x8 stud framing in the walls and oversized ceiling joists to create more R-value with thicker bat insulation if that is the route i'm going. Just make sure your insulation contractor is experienced and qualified no matter what product you choose.
I don't know of any internet horror stories my wife has read on the internet, but she and I have talked with people with personal experience who told us they have to run a dehumidifier to reduce moisture. The heat pump is recommended woth foam insulation to help draw moisture out. From what I've read you are correct about the insulation installer being the most important factor regardless of the type of insulation. Most problems that arise from foam insulation seem to result from faulty installation.

Foam in the walls should be r22 vs fiberglass in 6" walls is r19, but the foam seals drafts.
 

doctorjj

Sharpshooter
Special Hen
Joined
Apr 16, 2009
Messages
7,041
Reaction score
1,178
Location
Pryor
I don't know of any internet horror stories my wife has read on the internet, but she and I have talked with people with personal experience who told us they have to run a dehumidifier to reduce moisture. The heat pump is recommended woth foam insulation to help draw moisture out. From what I've read you are correct about the insulation installer being the most important factor regardless of the type of insulation. Most problems that arise from foam insulation seem to result from faulty installation.

Foam in the walls should be r22 vs fiberglass in 6" walls is r19, but the foam seals drafts.
Foam doesn’t create any moisture. If you have moisture in your home after foam insulation was installed, then you have a moisture source issue. Improper venting and/or no whole home energy recovery ventilation system which should have been part of the plans from the beginning.
 

rawhide

Sharpshooter
Supporting Member
Special Hen Supporter
Joined
Mar 12, 2008
Messages
4,234
Reaction score
1,310
Location
Lincoln Co.
Foam doesn’t create any moisture. If you have moisture in your home after foam insulation was installed, then you have a moisture source issue. Improper venting and/or no whole home energy recovery ventilation system which should have been part of the plans from the beginning.
My terminology could probably be better. Condensation seems to be the issue due, as you have pointed out, to insufficient ventilation. I'm planning to have an external air source for the fireplace. What ventilation options should I be looking at?
 

doctorjj

Sharpshooter
Special Hen
Joined
Apr 16, 2009
Messages
7,041
Reaction score
1,178
Location
Pryor

MacFromOK

Sharpshooter
Special Hen
Joined
May 11, 2016
Messages
13,759
Reaction score
14,758
Location
Southern Oklahoma
Man I dunno.

Not sure I'd spend a lot extra trying to make it airtight, and then have to spend still more to ensure adequate ventilation and humidity control (which also creates more systems & their maintenance costs).

Just a thought. Your call. :drunk2:
 

doctorjj

Sharpshooter
Special Hen
Joined
Apr 16, 2009
Messages
7,041
Reaction score
1,178
Location
Pryor
Man I dunno.

Not sure I'd spend a lot extra trying to make it airtight, and then have to spend still more to ensure adequate ventilation and humidity control (which also creates more systems & their maintenance costs).

Just a thought. Your call. :drunk2:
It recovers the energy as it ventilates. It’s way better than uncontrolled air coming through every crevice in the house, unaccounted for and unconditioned.
 

Riley

Sharpshooter
Special Hen
Joined
Mar 28, 2013
Messages
786
Reaction score
329
Location
Green Country
I have both a heat pump, a standard ac unit, and a gas fired furnace. The heat pump cools efficiently and produces decent heat during "shoulder season", however when it gets "cold"; I switch it to emergency and run gas through the winter. With our gas v. electric costs it works out to a reduced bill. Another thing I think gets lost, is that the heat pump, while producing air temps above ambient, tend to feel cooler than gas heat. Might be perception but I prefer the real warmth of a gas or wood furnace when it's cold out.

Concerning insulation I think its a pay me now or pay me later kind of thing. There is a definite payback period then it's money in the bank.
 

Latest posts

Top Bottom