If there were a simple and effective way to solve the problem of cold back drafting chimneys, you can be sure it would be prominent on the web site. There is no simple solution because the problem has to do with the physics of cold chimneys and warm houses. Chimneys belong inside houses.
Many conditions may be a factor. Outside chimney, needs cleaning, negative pressures, to name a few.
Install an insert.
Yes.
Yes.
Depending on your choice, most have igniters that are factory installed, there are very few that are available without igniters.
40 lb bags.