Material cost is another important consideration. Since furring strips can be cut from larger boards, you use fewer boards to install furring strips, translating into about half the cost of stud wall framing. However, what you save with furring strips is balanced by the cost of insulation. Given the price of a double layer of expanded polystyrene foam insulation -- a total R-value of about 8 -- or R-13 fiberglass, the foam insulation costs more.
Vertical nail ridges, which extend from your cuticle to the tip of your nail, are fairly common and often become more numerous or prominent as you age. Vertical ridges in your nails are not a health concern. Although the exact cause of such ridging isn't known, heredity likely plays a role.
What is Median Nail Dystrophy? Median nail dystrophy is a condition of the nail, it is characterized as split or crack at the midline of the nail, which generally resembles a fir tree. Common symptoms reported by people with Median Nail Dystrophy. Reports may be affected by other conditions and/or medication side effects. We ask about general symptoms (anxious mood, depressed mood, insomnia, fatigue, and pain) regardless of condition.