Construction

• A laminated shingle begins with a mat usually made of either fiberglass or an organic material that's heavier than the 3-tab asphalt base. Instead of only one layer of asphalt and colored granules, the architectural shingles features several layers that are laminated together to create the thicker, more textured look. The laminated shingles don't usually have the grooves that create the 3-tab look of traditional shingles. The texture and look of the shingles varies based on how the shingles are made.
  
  

Pricing

• You'll pay more for architectural or laminated shingles than for 3-tab shingles, possibly as much as 20 to 40 percent more. The cost stems from the additional construction process and greater durability. More laminated shingle bundles are necessary for the same roofing area than 3-tab shingles. If you have the shingles professionally installed, the increased bundles of shingles mean more work and greater labor costs. The additional cost is often a solid investment because of the greater durability.
  
  

Benefits

• Because laminated shingles are thicker than traditional asphalt, the roof covering stands up better to elements such as wind, extreme temperatures and hail. High-end laminated shingles can handle up to 120 mph winds. The durability allows the shingles to last for 30 to 50 years. The lamination makes the shingles resistant to fire and insects for greater protection. Architectural shingles are made to look like various roofing materials, such as slate or wood, that cost less than the laminated shingles.
  
  

Disadvantages

• Despite their durability, laminated shingles may mildew or develop a buildup of algae, particularly if wet items such as leaves remain on the shingles. A zinc or copper addition to the granules reduces algae on the shingles. Cleaning off the roof regularly also helps prevent mildew problems.