I have had good results using a polyester tulle from NY Fashion Center.  I believe the width is 60" or so, and the cost is $5.99 per yard; there are a multitude of colors available for .99 a swatch.  One side of the tulle- likely the "reverse"- is smooth, with all the texture  of the weave on the other side, greatly reducing possibles abrasion of the fragile silk fibers.

You can find their contact info online (sorry to not have it immediately available to me).

Jane Hammond
On Feb 2, 2010, at 8:41 AM, Frisina, Ann wrote:

> I am about to unroll 5 large fragile silk civil war flags and was wondering what conservators have used to temporarily encapsulate them with. I want to use something that is transparent enough to clearly see the textile through.  I was thinking of using mosquito netting, though at $15.00 per yard it is a bit expensive.
> 
> Does anyone have any other suggestions?
> 
> Thank you.
> Ann Frisina
> Textile Conservator
> Minnesota Historical Society
> 345 Kellogg Blvd. W.
> St. Paul, MN. 55102
> 
> 651 259-3385
> 
> http://www.mnhs.org/preserve/conservation/index.html