[Greenbuilding] innovative solution sought

[Clarke Olsen]

You could use 5" Timberloks to sister new 2x4s to the existing rafters the hard way, making 2x7s.
Or, scab 1x 8s, 5/4x8, 2x8s to their sides,. I'm assuming that you want the finished 
depth to be 8". When you do this, you can pick out bent lumber to push back the sags of time.
Clarke Olsen
clarkeolsendesign.com
373 route 203
Spencertown, NY 12165 
USA
518-392-4640
colsen at taconic.net




On Sep 9, 2016, at 12:32 PM, Nick Pyner <npyner at ihug.com.au> wrote:

> Cheap plywood shot to the side of the rafters? 
> 
> On 10/09/2016 12:59 AM, Sacie Lambertson wrote:
>> All, We have an old house in which we want a well insulated unvented attic.  We are replacing the existing roof (with metal) and installing a minimal layer of XPS on top of the sheathing. We plan to use closed cell spray underneath followed by dense pack cellulose between the rafters.  The problem is the rafters, which are only 2x4s in this old house.  I am looking for a creative least expensive way to provide more rafter depth for the insulation. 
>> 
>> (We do not want to build up the insulation on the top of the roof  sheathing because doing so requires the added cost of completely rebuilding the existing soffits, which are in good condition).  
>> 
>> Will appreciate all your useful suggestions.
>> 
>> Sacie
>> 
>> 
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