The house is 15 yrs. old - the interior walls were finished in an uneven rough texture and am not sure what was used. The applicattion is very inconsistent through the house. The finish absorbs any spills, so this is really bad in the kitchen. If you try and wipe a spill the finish comes off down to the wallboard. It easily flakes off too. It is not popcorn. I saw an article about being able to plaster over popcorn ceilings and hope all of the walls in this home can be plastered over and fresh paint applied. Suggestions are appreciated.