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Whats wrong with this installation?

mtlogcabin

SAWHORSE
Joined
Oct 17, 2009
Messages
9,486
Location
Big Sky Country
Just got my ICC-ES Enews and this was on the front

_ U.S. EPA Recognizes ICC-ES as Certification Body for the

EPA Seal and Insulate with ENERGY STAR Program

img8341.jpg
 
Possible concern with airflow around the skylight for roof ventilation, but without the job specs can't say for sure.
 
Hint may not be a code section for this

If you did a did a blower door test on a 30 degree day what color do you think the drywall applied to the 1 x 4's would be?
 
When insufficient information is provided don't expect lucent responses

And since this is not your project, you are Making assumptions

where was the photo was taken? There may be no 30 degree days.
 
Doesn't matter where the project is, it does not meet manufactures installation instructions for fiberglass batt installation.
 
Keystone said:
R-Value of insulation not clearly labeled.Stapling side every 8" +/-.

High and low ventilation openings in skylight frame.
unbacked insulation is not labled

Not all insulation needs to be stapled, the strapping will hold unbacked insulation in place per manuf. instructions

In thirty plus years never provided High and low ventilation openings in skylight frame.
 
BATT CEILING INSULATION Unfaced batt installation:

• batts shall be correctly sized to fit snugly at the sides and ends

• batts should fill the cavity

• where necessary, batts shall be cut to fit properly – there should be no gaps, nor should the insulation be doubled-over or compressed. When batts are cut to fit a non-standard cavity, they should be cut to be one inch (1”) wider than the cavity.

• batts should be cut to butt-fit around wiring and plumbing, or be split (de-laminated) so that one layer can fit behind the wiring or plumbing and one layer fit in front

• for batts that are taller than the trusses, full-width batts should be used so that they expand to touch each other over the trusses

• the insulation must cover the wall top plates

• hard covers or draft stops should be placed over all deep drops and interior wall cavities to keep insulation in place and stop air movement. If hard covers or draft stops are missing or incomplete, they should be completed before insulation is completed.

• required ventilation must be maintained: for eaves or soffit vents, one-inch (1”) of unblocked free air space between the roof sheathing and the insulation is required.

• where necessary, use baffles to keep the insulation from blocking the passage of air

• insulation shall cover all IC rated lighting fixtures

• fixtures that are not IC rated (e.g., halogen lamps, heat lamps) need to be enclosed in an airtight box that meets fire codes, and the box covered with insulation. If fixtures are not IC rated and not enclosed in such a box, they should be replaced or boxed before insulation is completed.

• an inch of air space should be maintained between the insulation and roof sheathing, if necessary to meet local codes

• facings and insulation should be kept three inches (3”) away from heated flue pipes or chimneys;
 
Keystone, Based on the installation instructions posted, it complies......But we do not all see the world the same way....
 
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Install facings

in substantial contact with the

finish material.

http://owenscorning.com/comminsul/documents/thermalbatt_eng.pdf

With the 1x attached to the bottom of the truss/rafter it does not allow the insulation to be in direct contact across the ceiling membrane creating cold spots along the ceiling. We see this mostly on kneewalls in our area and as we are learning we are sharing it with the installers.
 
There are no "facings" on unfaced batts.

Keep reading " Furring Strips Thermal Batt Insulation can be applied between furring strips, hat channels, or Z-shaped furring in areas where a finish surface will be installed.

I belive The furring is 2x, attached to the bottom of the rafter

And if the intent is to have contact, they would need "facings"
 
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How do we know what we're looking at?

N1101.5 Building thermal envelope insulation. An R-value identification mark shall be applied by the manufacturer to each piece of building thermal envelope insulation 12 inches (305 mm) or greater in width.
 
Not aware of unfaced insulation that has an R-Value printed on the surface, install instructions point to values for unfaced insulation printed on the bag or a tag.

To deal with these situations, Pa. implemented regs requiring certification of placed material by the installer.
 
Keystone said:
Also, depending on design and size of lumber in the cathedral ceiling vs zone, confirmation of roof ventilation spacing may be required.
We cannot see what is above
 
Keystone said:
Not aware of unfaced insulation that has an R-Value printed on the surface, install instructions point to values for unfaced insulation printed on the bag or a tag.To deal with these situations, Pa. implemented regs requiring certification of placed material by the installer.
As I posted before We do not Know where this is....
 
Depending on climate zone, facing on the interior may be undesirable.

The facing being in substantial contact with the interior finish requirement is limited to facings that do not meet a Flamespread of 25 or less.

Air sealing may be via thin layer spray foam on underside of unvented roof deck.
 
Keystone said:
Not aware of unfaced insulation that has an R-Value printed on the surface, install instructions point to values for unfaced insulation printed on the bag or a tag.To deal with these situations, Pa. implemented regs requiring certification of placed material by the installer.
We are about to require the same. Our new adopted codes come out the 1st.
 
Mark your approach to the what's wrong with this picture 'game' is a novel way to learn, and I like it. :devil
 
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