any opinion on this material

[Scott Keiper]

This is a cardboard type material installed with 1x2's with approximately a 1" gap between the roof deck and the cardboard along the inside of the roof trusses. The home was just renovated and the attic does have insulation. I'm looking for an opinion on the material and general installation. This is a first for me seeing this.

[rmaday]

Pics are tought to make out.

Is it supposed to be some type of baffle?

Is it continuous to the ridge?

[Scott Keiper]

Its continuous from the ridge to the soffit.

[Scott Keiper]

[attach][/attach]

[David P. Valley]

It appears to be some sort of baffle material.

I'd just make sure it is not combustible. Due to it being an unknown material, I would have torn a small piece off from a inconspicuous area and brought it outside and put my lighter to it.

[Blaine Wiley]

It may be a homeowners feeble attempt at a radiant barrier. Was one side foil faced?

[Scott Keiper]

no. one side white the other brown.

[Doug Edwards]

Hmmmm. like toilet paper.....

[Terry Clayton]

is there a ridge vent. may act as a funnel to pull air from soffet to ridge to help cool attic. Have not seen it used in st Louis yet. keep us informed if you find out

[Rick K. Kie]

looks like homasote to me.

[rmaday]

Originally Posted by tclayton

is there a ridge vent. may act as a funnel to pull air from soffet to ridge to help cool attic. Have not seen it used in st Louis yet. keep us informed if you find out

If it is as you state, it won't do much for the attic, rather, the area between the roof deck and this material will be well ventilated.

[Brian A. MacNeish]

Originally Posted by dvalley

It appears to be some sort of baffle material.

I'd just make sure it is not combustible. Due to it being an unknown material, I would have torn a small piece off from a inconspicuous area and brought it outside and put my lighter to it.

Why are you concerned about the flammability?

[David P. Valley]

Originally Posted by Brian A. MacNeish

Why are you concerned about the flammability?

You can answer your own question.

Why is attic insulation flame retardant?

[Michael R. Boyett]

But what about...framing material, roof decking, plywood attic flooring, plastic ridge vent material, rubber roof jacks, non plenum rated wiring, freon line insulation, etc, etc?

[David P. Valley]

Originally Posted by mboyett

But what about...framing material, roof decking, plywood attic flooring, plastic ridge vent material, rubber roof jacks, non plenum rated wiring, freon line insulation, etc, etc?

These combustibles are on top of the flame retardant insulation. Not a big deal, due to the limited protection of the flame retardant insulation.

The only reason why you want the baffles to be flame retardant is due to the penetration of the flame retardant insulation at the soffit area.

If you desire to have combustibles penetrating flame retardant insulation, it's your house. Do as you please.