These areas are generally dealt with by the drywall company's "IPD" crew at the "mech" stage of insulation/drywall. Depending on the drywall company's diligence in the training of these people, you may have R "this, that, or the other thing"- in the bumped out area that houses the unit in question. The integrity of the vapour barrier envelope is also questionable as the mech trades generally just "hack and slash" when they are doing the rough in. Too boot? The floor of the space is sitting on "cantilevered" joists-which are extended past the foundation wall- and the underside of this area is probably improperly insulated as well. Minimum code in this application calls for R28 to the underside and R12 to the rimboard areas. My guess is you have a piece of R5 foam nailed to the underside and the "insulator" (LOL) who did your basement rammed R 20 batts in as best as he could, stapled a piece of poly to the top plate and shoved it out into the voids in the joist spaces. The space with the gas line feeding into it will (most likely) have nothing blocking the cold rim board. The side rims are (most probably) uninsulated as well. This is the nature of the business...everyone is on "piece work" and joist ends/cantilevers suck major balls, when you're getting paid by the square foot. 200 feet of material at $0.28 = $56.00 and it's a 5-6 hour job (in some cases) to "do it right". With the current climate (I'm speaking as someone who is "boots on the ground" in this industry-can you tell?) of home building and the lack of supervision in the trade, this is going to be a common matter.
Get in, get out, get cheque...on to the next one.
It is what it is.
I am currently running 5 piecework crews (plus my own crew), insulating new build houses for two of the larger drywall companies in the Greater Edmonton area. My piecework people are all self trained and do it properly (to the best of their abilities) but the fireplace and bathtub area's are beyond our control to do anything with... these are done prior to us ever getting on site.
One of the company's IPD people are very good...the other company?
Not so much.
I work a bunch of "small scale" builders (direct) as well and I do the "IPD" stages, concurrent with the framing. Rim joists and Cantilevers are insulated once the floor joists are up, but before the floor is sheeted. I charge trip charges plus time and materials for these and do all of this myself. These builders recognize (and are more than willing to compensate me for) the attention to detail. None of the people who bought a house from these guys will ever come complaining about the envelope in their house. It costs the builder another $500 (on average), to buy the peace of mind of which I speak.
In their minds eye?
It's money well spent...
The thing is?
There is really ONLY one time to get this done properly. When the house is at this stage of construction.
Retrofits are intrusive and thereby? Expensive.
Anyone considering a new build in the Greater Edmonton area can PM me (at any time) with regards to the builder you are considering (I see about 35-40 different ones per year) . High, Mid, Entry? We do most of them.
Coventry
Sabal
Landmark
Dolce Vita
Bedrock
Kimberly
Infiniti Masterbuilt
Perry Signature
Perry Tapestry
Carriage Signature
Hillview
Dream Homes by Krisner
Homes by Sidney
KC Construction
M&M Construction
Look
Thomsen Homes
Streetside
Cobblestone
Christensen Developments (CDL-AKA "Can-Der")
Homes by Avi
Kazia
D&A Construction
Kate Park Developments
Impact Homes (Coventry entry level)
Plus dozens of 2-3 houses a year guys... that I won't elaborate on.
Not an advertisement... but my company also offers full service drywall from Ipd to texture. Solid board crew, great taper, constant COMMUNUICATION. Full service frost walls (framed and insulated) at competitive rates.
FWIW...
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