What is Polyiso INSULATION. Polyisocyanurate (polyiso) is a closed-cell, rigid foam board insulation consisting of a foam core sandwiched between two facers. The facers are composed of various organic and inorganic materials. It is used in over 70% of commercial and residential markets for both wall and roof applications.
All 38 plays which we recognize as Shakespeare's were published before 1634 in some form. We are very fortunate in that two friends of Shakespeare's, Heminges and Condell, decided after his death to publish a compendium of his plays.
Of Shakespeareâs 37 plays, ten are considered tragedies as defined as: plays dealing with tragic events and having an unhappy ending, especially one concerning the downfall of the main character. In each of his tragedies, Shakespeare has his main character suffer some flaw in their core character.