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HomeMy WebLinkAboutPermit Correspondence 2002-10-30 lo15~ ~es [f1'-75~~$ 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 Thickness* To obtain an Installed insulation insulatIOn resistance should (R) of not be less than R-38c lOX" Thick R-38 13" Thick i=l-30c 8X" Thick ;0 lOX" Thick R-21 5X" Thick R-19 611" Thlckt R-15 3X"Thlck R-13 3X" Thick R-ll 311" Thick *Thlckness may vary Check bag label t R-17 3 In a 511" 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 nom mal net weight bag) Fiber Glass Blowing Wool Attic InsulatIOn - 45 Ib Bag R Mimmum 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 (R) 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 22X" Thick 20" Thick 18" Thick 16" Thick 13" Thick 111\"Thlck 9%" 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 31 1 SQ ft 36 5 SQ ft 46 2 SQ ft 53 7 SQ ft 64 2 SQ ft 748 SQ ft 1268 SQ ft Minimum Wt/sq. ft. The weight persq ft of Installed insulation should not be less than 20421bs 1 680 Ibs 1 446 Ibs 1 2331bs 09751bs o 8381bs 0701 Ibs o 6021bs 0355 Ibs Net Weight/Bag Minimum 411bs. 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 insulating 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 Ceilings Walls Q - {\)C 1'50D Floors (2, - J!5 XI l? I 7:7~ 0 Blowing Wool ~-val!le <<.- "3 't\ Thickness Iv" Bags Used <)1 Coverage Area ,<((;<.,- l~ltJf) ~ ~t/1fL1 torJm~ -JAI ~/(Jl- " Signature (Home BUilder) Company Date BIC 186 (Willows) 8/98 This home is insulated with Johns Manville Fiber Glass Building Insulation 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. ft. Maximum Net Coverage Minimum Wt./sq. ft. 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 22Yz" Thick 20" Thick 18" Thick 16" Thick 13" Thick 11Yz" Thick 9%" Thick 8 Yz" Thick 5%" Thick 45.4 37.3 32.1 274 21 7 186 156 13.4 7.9 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 74.8 sq. ft. 126 8 sq ft 20421bs 1 680 Ibs. 1.446 Ibs. 1.233 Ibs. 0975 Ibs. 0.838 Ibs 0701 Ibs. 0.602Ibs. 03551bs. Read This Before You Buy What You Should Know About R-Values The chart shows 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. JI'M Johns Manville BIC 186 (Willowsl 8/98 ~ PRINTED ON ~ RECYCLED PAPER Insulation Group POBox 5108 Denver, Colorado 80217-5108 1-800-654-3103 Internet http //www Jm com