Insulation Stops in Attic

[jaw22w]

I am finishing a new 30 x 40 pole barn. It is a ways in the future, but I am thinking about attic insulation. Insulation will be blown-in R-38 cellulose. The trusses are on 4 foot centers. I know insulation stops are available for 2' o.c. trusses, but I can't find a stop for the 4' spacing. Is there anything commercially available? I have seen videos of people using house wrap to fashion these stops. Is this the only way or is there something else available? Can't have the cellulose blowing out into the soffits!
Thanks for any info.

 

[duneslider]

I would just use cardboard, precut it on the floor and then take them up. The premade ones aren't really anything special and it seems most of them used in my area are just cardboard anyway.

 

[larry4406]

Can't help with your issue, but I would question the suitability of trusses that are on 4' centers to support an attic floor.

 

[duneslider]

Can't help with your issue, but I would question the suitability of trusses that are on 4' centers to support an attic floor.

I don't think he is saying anything about an attic floor? He is talking about blown in insulation.

 

[jaw22w]

Can't help with your issue, but I would question the suitability of trusses that are on 4' centers to support an attic floor.

No floor, just 29 ga. liner panel. Probably just enough to hold the cellulose up!

I would just use cardboard, precut it on the floor and then take them up. The premade ones aren't really anything special and it seems most of them used in my area are just cardboard anyway.

I could probably find cardboard, but I do have some extra housewrap left. I guess I will just try that
and see how it goes.

 

[billconner]

Use two 24" ones in each bay.

 

[Chrisfol82]

I have 2 ft center trusses with attic space, but i used pieces of 1" thick rigid foam panels cut about a foot tall and wedged between the trusses right at the soffit. I used batts between my trusses rather than blown in, but i think it would work well to give you a barrier to keep blown in out of your soffit. So out of a 4x8 sheet youd get enough pieces to go between 8 truss openings.

 

[billconner]

I have 2 ft center trusses with attic space, but i used pieces of 1" thick rigid foam panels cut about a foot tall and wedged between the trusses right at the soffit. I used batts between my trusses rather than blown in, but i think it would work well to give you a barrier to keep blown in out of your soffit. So out of a 4x8 sheet youd get enough pieces to go between 8 truss openings.

You think the 1" might deflect too much in a 4' span? Maybe a 1x2 on edge in middle.