Hi, what do you called the building material where it has a nail and a flat square stand, it use to hold the i?

Well, being a former home-builder, I believe that I can answer this for you. What you are describing is actually called a ';simplex'; nail. It is used to hold insulation sheathing on the outside walls of a house . It is used mainly to prevent the insulation sheathing from pulling loose, especially under windy conditions.





There are actually different types of simplex nails. You have one type of a simplex nail with a ';plastic'; head which does basically the same thing. I've used the plastic simplex nails to attach felt paper (black rolled roofing that serves as an underlayment for shingles). With the bigger flat or cupped head, you can be assured that the felt paper or insulation sheathing will definitely be able to stand up to windy conditions much better than just a standard roofing nail would hold.


I hope this helps!





Hi, what do you called the building material where it has a nail and a flat square stand, it use to hold the i?
Are you talking plastic cap nails? They are a nail and around the head is the plastic circle or can be square. They use them to hold on insulation board and for shingling sometimes.