Blown-in Fiberglass Insulation Installation

KD@Northeast

I have a question for the guys that do blown in fiberglass insulation. Is it possible if you have access to the top plates of the a home to drill holes through them at every cavity and fill the cavity that way instead of taking off the siding and drilling holes from the outside. I have never installed this material myself but would be interested in learning more about it. I would love to hear everyones comments.

Mud Master

Might be some guys here that know it, however if you go to Specialty Trades there is a section devoted to Insulation. I would post both in the general forum and in there, may find some more definite answers. Also try Construction or General discussion, a place where the majority of the "Regulars" hang in.

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joasis

Cellulose is a much better choice then fiberglass...and typically, it is drilled and blown from the outside.

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In_Mexifornia

I can't imagine drilling big holes in the top plates every bay just for blown in insulation. That would weaken the structure.

calnan's energy

first don't install fiberglass it is not a good insulator. use cellulose.
yes i have drilled down through the top plate and used a long tube to insulate.

silvertree

Cellulose not fiberglass, fiberglass loses r value when it gets cold or I should say it doesn't insulate as well when it gets cold. There are plenty of sites that claim this is a fact. I believe it.
This link has some good insulation studies.

http://www.buildingscience.com/bsc/

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