Roofing 101 ((LINK))
Sheathing- The rigid material (often 1-inch by 6-inch or one inch by twelve-inch boards or sheets of plywood) which is nailed to the rafters, and to which shingles or other outside roofing materials are secured.
Underlayment- The material (usually roofing felt) laid on top of sheathing before shingles are applied. Valley The less-than 180-degree angle where two sloping roof sections come together. Valley Flashing The flashing in valleys, extending in under to shingles on both sides.
Asphalt shingles are by far the most common material used for roofing but there are other options to consider. Your choice for roofing material can be based on quality, cost, durability, aesthetics, and the geographical location of the roof.
A new roof system is a big investment, and you should get a quality roof system at a fair price from a professional roofing contractor. Hopefully, this information will make you a more knowledgeable consumer and, when the time comes, a smart roof system buyer.
Asphalt shingles' fire resistances, like most other roofing materials, are categorized by Class A, B or C. Class A signifies the most fire-resistant; Classes B and C denote less fire resistance. Generally, most fiberglass shingles have Class A fire ratings, and most organic shingles have Class C ratings.
Slate is quarried in the United States in Vermont, New York, Pennsylvania and Virginia. It is available in different colors and grades, depending on its origin. Considered virtually indestructible, it is, however, more expensive than other roofing materials. In addition, its application requires special skill and experience. Many old homes, especially in the Northeast, still are protected by this long-lasting roofing material.
Therefore, it is important never to block off sources of roof ventilation, such as louvers, ridge vents or soffit vents, even in winter. Proper attic ventilation will help prevent structural damage caused by moisture, increase roofing material life, reduce energy consumption and enhance the comfort level of the rooms below the attic.
Fire rating is a system for classifying the fire resistances of roofing materials. Classes are labeled A, B and C. Class A materials have the highest resistance to fire that originates from outside of the structure, and these include clay tiles, fiberglass asphalt composition shingles and metal roofing.
The roofing market is divided into two general categories: steep-slope and low-slope. Steep-slope roofing includes coverings installed on slopes exceeding 14 degrees. This is usually associated with residential roofing and, by connection, shingles. Low-slope roofing includes water impermeable or weatherproof systems installed in slopes that are less than or equal to 14 degrees. This type of roofing is usually associated with commercial roofing.  With this categorization, it is easy to understand that steep slope roofing is the dominant type of product with over 75 percent of the total roofing market. It is estimated that four out of five homes are roofed with asphalt shingles. 
Bay 101 Roofing aims to do the job right every time, regardless of what it takes. Every step of the roofing process is completed with meticulous attention to detail since we maintain our fleet of trucks and have our own equipment.
Bay 101 roofing takes the extra time and effort to provide our customers with the process and suggestions for using the best materials. Our customers receive custom plans that provide the potential return on investment details.
Regular (3-tab) asphalt shingles have three regularly spaced asphalt tabs, giving the roofing material a very repetitive pattern. In contrast, dimensional shingles have two layers of shingle material bonded together, giving them a three dimensional appearance. Also known as Architectural or laminated roofing shingles, they are composed of a heavy fiberglass mat base and ceramic-coated mineral granules that are tightly embedded in carefully refined, water-resistant asphalt.
Roof decking (also called roof sheathing) is the wooden boards (plywood or planks) that make up the foundation of a roof system and that the rest of your roofing materials are installed on.
Ice and water shield is a waterproof membrane that protects your roof from ice and water damage. Its main purpose is to protect the decking if water happens to get under your roofing material (asphalt shingles, metal roof, etc.).
Starter shingles are a pre-cut row of roofing material installed underneath the first course of shingles. They have an adhesive to ensure the first row of shingles are sealed at the eaves and along the rakes to improve resistance against strong winds.
No matter what kind of metal you choose for your roof flashing, it should outlive the original roof it was installed on. But if your roofing contractor finds the integrity of the metal is compromised, the flashing will need to be replaced.
The biggest part of your roof system is the roofing material you choose. The 5 most popular types of residential roofing materials are asphalt shingles, standing seam metal roofing, cedar shake roofing, synthetic roofing, or slate roofing.
The most commonly used roofing material in the United States is an asphalt shingle roof. An asphalt roof is made up of primarily asphalt shingles and other asphalt roofing components.
There are two types of metal roofs, but a standing seam metal roof is recommended for residential roofing. A standing seam metal roof system is a series of metal panels locked together at the seams or seamed mechanically.
This allows for the metal panels to expand and contract freely when the metal heats up. While not as common as asphalt, standing seam metal roofing is becoming more and more popular in the roofing industry.
A cedar shake roof is a premium roof system made of natural wood (cedar) materials and is one of the most aesthetically pleasing roofing materials on the market. To make the actual shingles, cedar trees are cut into 2-foot sections and hand split or sawed into a tapered thickness (tapersawn).
A slate roof is a premium roof system made primarily out of natural slate tiles and other slate roofing materials. The slate itself is mined (mostly in Italy) and cut into square tiles that have to be installed one at a time.
When you receive a proposal for roofing repair or roof coating, it will include a description of the problem areas (if any) and the work to be done. That description will include a number of technical roofing terms that you may not be familiar with.
Gardner Roofing in Mountlake Terrace, WA has been the trusted roofing company in the greater Seattle area for over 20 years. Our team of expert roofers will arrive at your home or business with all the necessary materials and carefully set up for installation. We prepare everything offsite, in advance, so the job runs efficiently, creating a clean and safe job site and offer a ten year workmanship warranty to give you peace of mind. Contact them today for a FREE repair or roof replacement estimate; same-day estimates are possible based on availability. Have a question? Contact them online or call 206-231-5665.
The number one reason metal roofing has grown in popularity in the last few decades is because of its energy-efficient nature. In hot summer months, metal roofing reflects most of the solar rays away from your home so they are not absorbed into the interior. This reflectivity minimizes the heat entering your home from the outside, ultimately saving on air conditioning costs. The opposite is true in the winter, with metal roofing improving insulation and keeping heat within the home.
Another green aspect of metal roof installation is the recyclability of roofing materials. Many metal roofs are produced with recycled metals, but almost all of them are recyclable after their use. Traditional asphalt roofs are composed of thousands of pounds of unrecyclable materials that end up in landfills every 15 to 25 years. Metal roofing is recycled once its life is complete, in 50 to 60 years.
Asphalt roofs are projected to last anywhere from 15 to 25 years on average. Metal roofing can last up to 60 years. This means you will likely never need to reroof your home. With the costs involved in purchasing a new roof, this is a huge saving. Some metal roofs actually outlast the homes they are built on.
Proper maintenance of a metal roof involves removing debris. If branches fall onto the roof, they need to be removed to prevent damage. Other than that, there is no maintenance. Many homeowners with asphalt roofs and shingles must actively maintain their roofs or replace shingles after storms. With metal roofing, this is not necessary.
Many people believe they are not able to walk on their metal roof. In actuality, walking on the roof is not a problem with proper technique. Once a roofing contractor has installed the metal roof, they will instruct you on proper walking techniques. The professional can tell you where on the panels you can safely walk without damaging or denting the materials.
The problem of hail on metal roofs has been improved with materials and textures. Aluminum and copper are relatively soft materials, presenting the possibility of hail damage. Many companies offer stronger materials or non-denting roofs to remedy this situation. If you are considering a metal roof, ask your roofing contractor about hail damage and their guarantees for prevention of dents.