HomeMy WebLinkAboutPermit Correspondence 2002-10-16
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Fiber Glass Blankets when
Installed according to the
manufacturer's recom-
mendations will provide the full
rated thermal resistance value
Blanket Insulation
R Minimum
Value Thlckness*
To obtain an Installed
\. insulation ( insulation
resistance should
(R) of not be less than
R-38c lOX" Thick
R-38 13" Thick
R-~Qc.... 8X" Thick
,(
\ '0 lOX" Thick
R-21 5)4" Thick
R-19 6W Thlckt
'R-15 3X" Thick
R-13 3X" Thick
R-ll 3X" Thick
*Thlckness may vary Check bag
label
t R-17 3 In a 5W cavity
The manufacturer recommends that the insulation be Installed at these minimum thicknesses
and maximum coverages to provide the levels of insulation thermal resistance (R-value) shown
(Based on 45 Ib nominal net weight bag)
Fiber Glass BlOWing Wool Attic InsulatIOn - 45 Ib Bag
R Minimum Bags Per
Value Thickness 1000 sq ft
To obtain an Installed The number of
insulation insulation shall bags per 1000
resistance not be less sq ft of net
(Rl of than area should
not be less
than
R-60
R-50
R-44
R-38
R-30
R-26
R-22
R-19
R-11
22W Thick
20" Thick
18" Thick
16" Thick
13" Thick
llX" Thick
9J.{" Thick
8X" Thick
5X" Thick
MaXimum
Net Coverage
Contents of
thiS bag should
not cover more
than
454
373
321
274
217
186
156
134
79
22 0 SQ ft
26 8 SQ ft I
31 1 so ft
36 5 SQ ft
46 2 so ft
53 7 sa ft
64 2 SQ ft
748 SQ ft
126 8 SQ ft
Mlmmum
Wt Isq ft
The weight
persq ft
of Installed
insulation
should not be
less than
20421bs
1 680 Ibs
1 446 Ibs
1 233 Ibs
o 9751bs
o 8381bs
o 7011bs
o 6021bs
o 3551bs
Net Weight/Bag MInimum 41 Ibs ThiS product conforms to the performance requirements of
ASTM C764 Type I, Category 2 ThiS product meets the Insulation Quality Standards of the
state of California
Thickness
Coverage Area
R means resistance to heat flow The higher the R-value. the greater the msulatmg power Ask your seller for the fact sheet on R-Values
Insulation products have been Installed In accordance with the above speCificatIOns to prOVide the R-values shown
Batts and Rolls
R-value
8' >J' 5
?76
~t'~h
Ceilings
Walls
'2-1
Floors
30
Signature (Home BUllderl
BlOWing Wool
R-value Thickness Bags Used Coverage Area
R'lICi' /~ 2. "/ (J'tO
, .
I to fos-. s:o( ~ 14'~_
6
to
D/I-rA""-fAfC I
Company - -
Go J1 +
Company
10
Date
/6- 9 ~
Date
SIC 186 (Willows) 8/98
This home is insulated with Johns Manville Fiber Glass Building InsJlation
-:-~
~
This is Fiber Glass
/ Blowing Wool Insulation
-:"",--
\
FTC Fact Sheet \
---
High Density Fiber Glass Building Insulation
Bag WeIght 45 Ibs Nominal (MInimum Net Weight of Insulation In this package IS 41 Ibs)
R
Value
Minimum
Thickness
Bags Per
1000 sq It
Maximum
Net Coverage
Minimum
Wt Isq It
To obtain an
insulatIOn
resistance
(R) of
Installed
insulatIOn shall
not be less
than
The number of
bags per 1000
sq ft of net
area should
not be less
than
Contents of
this bag should
not cover more
than
The weight
persq ft
of Installed
insulatIOn
should not be
less than
R-60
R-50
R-44
R-38
R-30
R-26
R-22
R-19
R-11
22%" ThIck
20" ThIck
18" Thick
16" Thick
13" ThIck
11Y2" Thick
9%" Thick
8%" Thick
5%n Thick
454
373
321
274
21 7
186
156
134
79
22 0 sq ft
26 8 sq ft
31 1 sq ft
36 5 sq ft
46 2 sq ft
53 7 sq ft
64 2 sq ft
748 sq ft
1268sq ft
2042 Ibs
1 680 Ibs
1 446 Ibs
1 233 Ibs
0975 Ibs
0838 Ibs
0701 Ibs
0602 Ibs ~
03551bs
"
Read This Before You Buy
What You Should Know About R-Values
The chart sh'ows the R-value of thIs Insulation R means resIstance to heat flow The higher
the R-value, the greater the insulation power Compare Insulation R-values before you buy
There are other factors to consider The amount of insulatIon you need depends maInly on the
climate you lIve In Also, your fuel savIngs from Insulation Will depend upon the climate, the
type and sIze of your house, the amount of insulatIon already In your house, and your fuel use
patterns and famIly sIze If you buy too much Insulation, It Will cost you more than what you'll
save on fuel
To get the marked R-value, It IS essential that thIS Insulation be Installed properly wIth
pneumatIc equIpment
Jim
Johns Manville
BIC 186 (Willowsl 8/98
~ PRINTED ON
'WI RECYCLED PAPER
Insulation Group
POBox 5108
Denver, Colorado 80217-5108
1-800-654-3103
Internet http //www Jm com