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GOLINVAUX REMODEL <br /> Analysis: <br /> Determine the heat loss of the existing wall and window area <br /> to be removed versus the heat loss of the new Pella sunspace. <br /> (Sq. Ft. ) x ( "U" ) (BTU) <br /> Existing wall area 57 x . 07 = 3. 99 <br /> Existing window area 63 x . 56 = 35.28 <br /> 39. 27 <br /> New sun space area (glass ) 147 x . 31 = 45. 57 <br /> 45 . 57 - 39.27 = 6. 3 BTUs <br /> Proposed Solution: <br /> We propose to add 6" of new insulation at the existing ceiling. <br /> Existing ceiling area (framed) 207 x . 036 = 7 <br /> Existing total net area 1867 x . 048 = 90 <br /> 97 <br /> New insulated ceiling area (framed) 207 x . 021 = 4 <br /> New insulated total net area 1867 x . 025 = 47 <br /> 51 <br /> 97 - 51 = 46 BTUs <br /> Conclusion: <br /> By adding 6" of insulation at the ceiling, we will gain 46 <br /> BTUs versus 6. 3 BTUs lost at new sunspace. <br />