Material Appearing Transparent?

[sea_lyons]

I found the image of my tiles online and imported them into Home Designer. When I apply them to my fireplace, they appear transparent. I've attached a photo of what's happening as well as the images of the tile. 

 

I've imported countless images of different tile before and applied it to this exact fireplace in this configuration but this is the first time this has happened.

There may be a better way to do this but I've used 3 separate Soffits to create my fireplace. I've also tried using a Solid Closed Shape but the same thing happens.

Any insight?

[solver]

Probably because it's a .png with transparency.

 

Make a .jpg and try it.

[sea_lyons]

That worked! Thanks so much.