All tent fabrics will burn if held in contact with an open flame or heat source long enough!
That said, in over sixty years of building tents using our superior 100% cotton canvas fabrics, we have not found the flammability of these material to be a great concern for wall tents with a woodburning stove, as long adequate stovepipe length and common sense are used.
All of our wall tent fabrics are the best double-fill canvas fabrics available. Because of the tight weave of our canvas, these fabrics tend not to ignite readily, though they will burn slowly if kept in contact with a flame or heat source. The 14.7 oz #10 Duck in particular, (used in our Stock Wall Tents) is naturally more flame-resistant than lighter-weight, looser-weave fabrics offered by many other makers. Neither it, nor our 12.5 oz Boat Duck are available with a fire-retardant treatment, but in our experience this is not typically a problem for most customers.
Our 10.1 oz Army Duck is available in a fire-retardant version on our custom wall tents. This may make sense for some customers using this tent material with a wood-burning stove.
Customers in seven states (CA, LA, MA, MI, MN, NJ and NY) in many cases are required by their state regulations to select our fire-retardant 10.1 oz Army Duck. If you live in one of these states, contact customer service if you are unsure whether the requirement for fire-retardant canvas applies in your situation.