insulation type

[Ken Meyer]

Can anyone identify this type of cellulose insulation? It has long fibers in it, looks like sawdust and wood fibers. Any idea if it would have been treated with fire retardant? There's only 3 or so inches of it, could it be covered with more blown in insulation? 1961 ranch.

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[Tom Raymond]

Mulch?

[hausdok]

Hi,

It's SilvaWool, I see it all the time in mid-50's to mid-70's houses.

ONE TEAM - ONE FIGHT!!!

Mike

[Ken Meyer]

Thanks, made by Weyerhauser?

[Bill Kibbel]

Yep, Silva-Wool. Manufactured by Weyerhaueser in Eugene, OR. It's made from Douglass fir and was treated "to prevent decay, repel rodents and vermin, and retard combustion".

[Ken Meyer]

I guess it didn't work against winged vermin. Of course, when you have a big opening like this, what can you expect?

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[Bill Kibbel]

I guess it didn't work against winged vermin.

After 50 years, I don't know how effective the treatment still is.

Take a pinch and hold a flame to it. I've done it with Balsam Wool to illustrate a point.

[Tom Raymond]

Yep, Silva-Wool. Manufactured by Weyerhaueser in Eugene, OR. It's made from Douglass fir and was treated "to prevent decay, repel rodents and vermin, and retard combustion".

So I was right, it is mulch.[:-bigeyes

Tom

[ghentjr]

I guess it didn't work against winged vermin. Of course, when you have a big opening like this, what can you expect?

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Squab for dinner.