Armstrong Laminate Underlayment Question
We are planning to install about 350 square feet of Armstrong Nature's Gallery laminate in my kitchen and breakfast area. It's inexpensive off the rack from Home Depot. It has a thin green foam underlayment attached. I'm wondering if I should supplement the underlayment with the roll stuff? We will be installing this ourselves over well glued, even sheet vinyl which was installed over plywood subfloor. I looked at several local floor shops and this pattern is the stuff I like best. It looks like stone tile.