Shingles with a thick appearance

Abstract

A shingle comprises an overlay, an underlay, and a height increasing material disposed between the overlay and the underlay. The height increasing material includes a first adhesive adhered to the overlay, height increasing granules adhered to the first adhesive, and a second adhesive adhered to the height increasing granules and the underlay. The height increasing material can extend along front ends of tab portions of the overlay, along front cutout edges that extend between tab portions of the overlay, or both.

What is claimed is: 
     
         1 - 17 . (canceled) 
     
     
         18 . A roofing material, comprising:
 an overlay layer; and   an underlay layer having a first portion and a second portion;   wherein the second portion of the underlay layer is positioned below the first portion of the underlay layer;   wherein the first portion of the underlay layer has a first height;   wherein the second portion of the underlay layer has a second height that is less than the first height of the first portion of the underlay layer; and   wherein a bottom edge of the first portion of the underlay layer is substantially colinear with a bottom edge of the second portion of the underlay layer.   
     
     
         19 . The roofing material according to  claim 18 , wherein the underlay layer comprises a folded piece of material such that a fold line of the underlay layer separates the first and second portions. 
     
     
         20 . The roofing material according to  claim 18 , wherein the second height of the second portion of the underlay layer is between about 5 percent and about 50 percent of the first height of the first portion of the underlay layer. 
     
     
         21 . The roofing material according to  claim 18 , wherein the second portion of the underlay layer is attached to the first portion of the underlay layer by an adhesive. 
     
     
         22 . The roofing material according to  claim 18 , wherein the overlay layer has a headlap portion and a tab portion, wherein the tab portion comprises one or more tabs, and wherein each of the tabs has a top edge that extends from a bottom edge of the headlap portion to a bottom edge of the tab portion. 
     
     
         23 . The roofing material according to  claim 22 , wherein the first portion of the underlay layer is positioned below each of the headlap portion and the tab portion of the overlay layer. 
     
     
         24 . The roofing material according to  claim 22 , wherein the first height of the first portion of the underlay layer is greater than a height of the tab portion of the overlay layer. 
     
     
         25 . The roofing material according to  claim 22 , wherein the bottom edge of the tab portion is substantially colinear with the bottom edge of the first portion of the underlay layer. 
     
     
         26 . The roofing material according to  claim 22 , wherein a width of the underlay layer is equal to a width of the headlap portion of the overlay layer. 
     
     
         27 . The roofing material according to  claim 18 , wherein a height of the overlay layer is greater than a height of the underlay layer. 
     
     
         28 . The roofing material according to  claim 18 , wherein the first portion of the underlay layer is parallel to the second portion of the underlay layer. 
     
     
         29 . A roofing material, comprising:
 an overlay layer; and   an underlay layer;   wherein the underlay layer comprises a folded piece of material such that the underlay layer has a first portion and a second portion that is disposed below the first portion; and   wherein a fold line that separates the first and second portions of the underlay layer is disposed at a bottom edge of the roofing material.   
     
     
         30 . The roofing material according to  claim 29 , wherein the first portion of the underlay layer has a first height that is greater than a second height of the second portion of the underlay layer. 
     
     
         31 . The roofing material according to  claim 30 , wherein the second height of the second portion of the underlay layer is between about 5 percent and about 50 percent of the first height of the first portion of the underlay layer. 
     
     
         32 . The roofing material according to  claim 29 , wherein the second portion of the underlay layer is attached to the first portion of the underlay layer by an adhesive. 
     
     
         33 . The roofing material according to  claim 29 , wherein the overlay layer has a headlap portion and a tab portion, wherein the tab portion comprises one or more tabs, and wherein each of the tabs has a top edge that extends from a bottom edge of the headlap portion to a bottom edge of the tab portion. 
     
     
         34 . The roofing material according to  claim 33 , wherein the first portion of the underlay layer is positioned below each of the headlap portion and the tab portion of the overlay layer. 
     
     
         35 . The roofing material according to  claim 33 , wherein the first height of the first portion of the underlay layer is greater than a height of the tab portion of the overlay layer. 
     
     
         36 . The roofing material according to  claim 33 , wherein the bottom edge of the tab portion is substantially colinear with the fold line of the underlay layer. 
     
     
         37 . The roofing material according to  claim 29 , wherein the first portion of the underlay layer is parallel to the second portion of the underlay layer.