Shiplap can be safe for a gas fireplace, but you should consult with a fireplace installation pro before proceeding. You need to make sure your project meets building and safety codes since shiplap is made from flammable wood. You may need to install another non-combustible material, like stone or brick, around the fireplace for a certain amount of space before you can add shiplap.

A hot fire alone will not remove significant creosote buildup and can be dangerous, as it risks causing a chimney fire. While the warmth from a fire can help loosen stuck tar, making treatments like creosote logs more effective, it is not a substitute for proper cleaning. For existing creosote, the safest and most effective method is to have your chimney professionally cleaned by a chimney sweep.

Wood-burning fireplaces typically make homeowners insurance more expensive, simply because they increase the risk for a fire in your home. Gas and electric inserts are less likely to bring up your insurance rates, but you should always speak with your agent to understand how installing any type of fireplace will affect your premiums.

Home insurance prices depend on where you live and the individual insurance company's policies. Some insurers charge a flat fee for fireplaces or wood-burning stoves, which is often a few hundred dollars per year. Other insurers base this fee on a percentage of your annual premium. You may want to check your current or prospective policy before beginning this project.