We are rewiring via a finished basement den and so have the ceiling down and access to the top of the previously finished exterior walls which are not insulated.

We are wondering about the wisdom of trying to pour/blow cellulose insulation down into the cavity (versus leave well enough alone or tear off the sheetrock and refinish the walls).  The room was finished by installing a stud wall against the foundation and then gyprock panels.  There is no vapour barrier.  The room has never been particularly cold nor damp but, being in Canada, I’d feel a little guilty not considering insulation.

I’d also feel guilty about sending a half ton of perfectly harmless gyprock to the landfill (not to mention that it’s heavy and dusty) to add batts and vapour barrier.  The only other argument in favour of removing gyprock would be getting rid of the pebbly plaster wall finish (cack) at the same time.  Over the nice little air space we have now, would Cellulose benefit us much?

Would it be wise or stupid to attempt to blow in insulation between the foundation wall and gyprock?  If not stupid, is Cellulose the product?

– Hope (Hack’s busy)