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<blockquote data-quote="muzzyhunter" data-source="post: 318534" data-attributes="member: 1093"><p>Lack of chutes is not the end of the world,especially in low pitched roofs,gable vents will give you good ventilation.I have seen ceiling line condensation due to improper chute installation.One house shot the cieling line with thermal camera 28 degrees,2ft down the wall 68,this was a -20 day.You have to maintain a good r value between wall plate and chute,personally I would spray foam those areas.</p><p>6" insulation would give you R19 at best,We blow R 50 on combustible heat and R60 on electric,so your definetley lacking there.Did you foam over or seal your can lights,big source of heat loss to attics.Before adding any type of fan you would want to check for leaks,chaseways for warm air to escape into the attic,adding more to frosting issues,again a thermal camera works great for this.</p><p>On the job I use a blowerdoor and manometer to pressurize ,depressurize,and zone pressure diagnostis,with thermal scan to find these things.</p><p>Just saying its not always as easy as adding insulation/ventilation,and sometimes can worsen the problem.My guess wold be seal lights and chases,bring up to R50,ventilation prob.ably adequate,attics relly dont reguire lots of ventilation.I prefer blown cellulose over fiber glass,it has some air sealing ability and will wick up moisture and dry in the summer.</p></blockquote><p></p>
[QUOTE="muzzyhunter, post: 318534, member: 1093"] Lack of chutes is not the end of the world,especially in low pitched roofs,gable vents will give you good ventilation.I have seen ceiling line condensation due to improper chute installation.One house shot the cieling line with thermal camera 28 degrees,2ft down the wall 68,this was a -20 day.You have to maintain a good r value between wall plate and chute,personally I would spray foam those areas. 6" insulation would give you R19 at best,We blow R 50 on combustible heat and R60 on electric,so your definetley lacking there.Did you foam over or seal your can lights,big source of heat loss to attics.Before adding any type of fan you would want to check for leaks,chaseways for warm air to escape into the attic,adding more to frosting issues,again a thermal camera works great for this. On the job I use a blowerdoor and manometer to pressurize ,depressurize,and zone pressure diagnostis,with thermal scan to find these things. Just saying its not always as easy as adding insulation/ventilation,and sometimes can worsen the problem.My guess wold be seal lights and chases,bring up to R50,ventilation prob.ably adequate,attics relly dont reguire lots of ventilation.I prefer blown cellulose over fiber glass,it has some air sealing ability and will wick up moisture and dry in the summer. [/QUOTE]
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