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To insulate a new addition to my home in mid-Michigan I’m planning on using blown-in cellulose. While I’m at it, I want to blow in extra over the existing 5 1/2″ fiberglass in the original building to increase the R value.
With the current construction ongoing, access will be fairly easy.
I’ve vented the eaves with those styrofoam Duravents to maintain proper air flow.
There aren’t any recessed cans that I will be covering, however there is a bathroom ceiling vent.
Can anyone see any potential problems in doing this?
Will the existing insulation pack down from the weight of the cellulose to the point that I end up losing its effectiveness thus reducing instead of increasing the total R value?
Will covering the bathroom vent be a problem?
Any hints or help that you can provide will be greatly appreciated.
Thank you – David Smith
Replies
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To insulate a new addition to my home in mid-Michigan I'm planning on using blown-in cellulose. While I'm at it, I want to blow in extra over the existing 5 1/2" fiberglass in the original building to increase the R value.
With the current construction ongoing, access will be fairly easy.
I've vented the eaves with those styrofoam Duravents to maintain proper air flow.
There aren't any recessed cans that I will be covering, however there is a bathroom ceiling vent.
Can anyone see any potential problems in doing this?
Will the existing insulation pack down from the weight of the cellulose to the point that I end up losing its effectiveness thus reducing instead of increasing the total R value?
Will covering the bathroom vent be a problem?
Any hints or help that you can provide will be greatly appreciated.
Thank you - David Smith