It is the combination hot air rising and subsequent vacuum effect in the room below which ensures that smoke from a fireplace fire will go up a chimney. without the control of the chimney flue, this effect could quickly lead to a fireplace fire getting too hot for the fireplace to handle.
oilcloth. (textiles). A fabric coated with a mixture of oil and clay, used as a waterproof covering. A floor covering made of a heavy fabric treated with oil paint.
Bright Blue/White Oilcloth Bright Blue &amp; White Print Stripe Oilcloth Fabric Great for your breakfast or dinner table, patio, parties, BBQ's or picnic tables. Many use oilcloth for baby play areas, sewing/art projects, bags, totes, book covers, runners, placemats, gifts, or scrapbooks.