HomeMy WebLinkAboutPermit Correspondence 2003-9-25
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FIBER GLASS BLOWING INSULATION
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BATTS AND BLANKETS
THERMAL PERFORMANCE (ATTIC APPLICATION)
When Installed In accordance with the man
ufacturer's recommendations, Knauf batts
and blankets will provide the full R value
The stated thermal resistance (R value) IS provided by installing In accordance with the manufacturer's instructions,
the required number of bags per 1,000 sq ft of net area, at not less than the labeled minimum thickness Failure to
Install both the required number of bags and at least the minimum thickness will result In lower insulation R value
MINIMUM
~.VALUE* THICKNESS
To obtain an Installed insulation
insulation resistance should not be
(~) of: less than:"
~-VALUE*
To obtain an
insulation resistance
(~.value) of:
R 38 1200"
R 30HD 825"
R30 1000"
R 26 900"
R 22 650"
R 21HD 550"
R 19 6 25"**
R 15HD 350"
R13 350"
R11 350"
R8 250"
R 50
R 44
R 38
R 30
R 26
R22
R 19
R13
R11
378 26 5 SF 1 058 Ibs 2350"
310 32 2 SF 8691bs 2000"
269 37 2 SF 7531bs; 1775"
229 43 6 SF 6421bs 1550"
179 559 SF 501 Ibs 1250"
155 64 6 SF 433 Ibs 11 00"
127 78 4 SF 3571bs 925"
109 92 0 SF 3041bs 800"
76 131 6 SF 213 Ibs 575"
6 2 161 3 SF 174lbs 475"
Bag We,ght-Nomlnal 28 Ibs , M,mmum 27 lbs
**R 18 In a 5 5 cav,ty (onforms to ASTM (665 and
Federal SpeCificatIOn HH I 521F
Th,s product conforms to the performance requirements of ASTM ( 764 Type I, and cancelled Federal Spec,ficat,on HH 11030B Type I,
(lass B R values are determined In accordance With (687 and ( 518
* R' means reSistance to heat flow The h'gher the R value the greater the insulating power Ask your seller for the fact sheet on R values
EQUIPMENT REQUIRED
To achieve labeled R vall'e, thiS product must be applied With a pneumatic blow
Ing machine and a corrug~ted hose With a minimum 25" Internal corrugation, a
TIlnlmum length of 150 ft and a diameter of at least 3" COils In the hose should
not be less than 36" In diameter Acceptable material feed rate IS 5 35
Ibs {minute Recommehded feed rate IS 1525 Ibs {minute
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BUILDER'S INSULATION STATEMENT
Batts and{or blankets have been Installed In conformance With the above recom
mendatlOns to prOVide a thermal resistance of
R-Villue Thickness
Attic Area R tJ9 at zP Inches
Sloped Ceilings R at Inches
Walls R 2-1 at 6 Inches
Floors (over an unheated crawl space) R < C) at JOlnches
Crawl Space Perimeter R at Inches
Date Installed 7- 7__~- 015
.
Blown insulation has been Installed In conformance With the above
recommztlons to prOVide an R value of R (-I Y uSing
'3 bags of thiS insulation to cover l / ~ f... square feet
of area at a minimum thickness of Z-C/ Inches
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BW AC DB 5{02
FRAMING ADjUSTMENT
To compensate for framing members, the number of bags per 1,000 sq ft of
area to be Insulated should be as shown below
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I JOIST
~.VALUE DIMENSIONS
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IAGS{MSF
W' O.c. F~AMING
IAGS{MSF
24" O.c. F~AMING
372
368
365
305
302
298
263
260
257
224
221
218
174
171
168
150
147
144
123
120
11 7
104
101
98
71
68
66
57
5 5
52
373
371
368
306
304
302
265
263
260
22 5
223
221
175
173
171
151
149
147
124
122
120
105
103
101
73
71
69
59
57
55
R 60 2x6
2x8
2x4
R 50 2x6
2x8
2x4
R 44 2x6
2x8
2x4
R 38 2x6
2x8
2x4
R 30 2x6
2x8
2x4
R 26 2x6
2x8
2x4
R 22 2x6
2x8
2x4
R 19 2x6
2x8
2x4
R13 2x6
2x8
2x4
R-ll 2x6
2x8
CLOSED-CAVITY APPLICATION
(EXTERIOR SIDEWALL OR FLOORED ATTICS)
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Contact Knauf Fiber Glass for more information
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Knauf Fiber Glass, One Knauf Drive, Shelbyville, IN 46176 (BOO) 825 4434
Printed In USA