Is Your Roofing Solution in Shingles or Tabs?

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BP & GAF Architectural shingle side-by-side

Roofing Materials Today

Manufacturers make modern roofing from laminated compounds with color added. There are two basic types, which are essentially either a single-layer or a double-layer roofing tile. The double-layer roof tile is the architectural or dimensional type. The single layer is the three-tab version.

The architectural type is costlier but more appealing to the eye, and it can add value to your home. The single-layer type or three-tab tile is a basic roof cover. It has a flat appearance, and the tiles are consistent in size and shape.

Construction of Asphalt Roofing

Damaged three tab shingle roof
3 tab shingles installed on a roof showing damage

The inner core of each tile is a piece of fiberglass. The fiberglass is water-resistant and provides some insulation. The maker then sandwiches the sheet of fiberglass between two weatherizing layers. Next, the top layer receives a covering of mineral granules, which add texture and color.

The architectural type of roof tile is a double of the four composite layers. The lower edge of the architectural tile has a raised laminated ridge. This raised section adds to the appearance of depth.

The double-layer composite tile is a popular roof cover. Manufacturers call it architectural or dimensional roofing. You can distinguish the architectural type from a three-tab or single-layer tile by its size, weight, durability, and appearance.

Asphalt Composition

Asphalt is the base material for architectural or double roofing and the 3-tab types. In the early 1980s, technical advances in lamination and materials created the architectural type. From that time to the present, architectural types have replaced tabs as the preferred material for roofing installations. Today, the traditional three-tab type of roofing is the low-cost option and the required material to repair roofs that already have tab shingles. 

When estimating the number of shingles needed to cover a roof area, Roofr uses technologically advanced methods to obtain precise measurements. Roofr will utilize satellite imagery to determine the exact roof dimensions and to estimate the bundles needed to complete the work on your home. 

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Architectural shingles have depth and dimension

Advantages of Architectural Roof Covers 

The double-layer roofing tiles have a noticeable multidimensional surface. The tiles stand out for their contours and depth. You can get them in shapes and colors that resemble high-end materials, like baked tiles, cedar shakes, and slate tiles. The advantages of double-layer tiles include: 

  • Durability: Double-layer roofing lasts longer and maintains its appearance better than single-layer materials. While the costs of acquisition may be higher for double-layer roofing, the longer life and added value for your home can pay for the added investment.
  • Appearance: The double-thick roof types have the appearance of depth. They add value to homes because of their popularity and eye-catching results.
  • Wind resistance: The thick tiles do not resist the wind better than the thin tiles until they seal. Single-layer tiles traditionally have ratings of up to 80 miles per hour. The manufacturer's warranty requires a 6-nail installation pattern for a high-wind damage rating of up to 130 miles per hour.
  • Warranty: Manufacturers typically provide warranty coverage in the range of 40 to 50 years. The latest warranty trends also include a lifetime coverage for as long as you own your home.

Begin the Roofr process and discover the solutions we have for your roofing needs and style preferences.

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Why Slope Matters in Roofing

Roof Slope and Project Estimates

Roof slope is one of the biggest factors that professionals consider when calculating a price for a roofing job. A steep roof may present a number of challenges. Generally, the steepness of a roof relates to how much risk is involved with the project, especially if it is on a tall building. Working on a roof with a steeper angle may also require bringing in more equipment and taking longer to deal with issues. All of this is factored into your roofing estimate.

The Ratios

The pitch of a roof is commonly expressed as a ratio or fraction. The rise is stated in inches of height per 12 inches of length. For example, a 4/12 grade on a roof means the surface rises 4 inches for every 12 inches of length.

This can lead to some misleading math. While 12/12 as a fraction sounds tame, it actually means that a roof rises very aggressively for every foot of distance. Conversely, a 1/12 grade is actually rather flat.

Conversion table:

Roof Pitch Angle Roof Pitch Multiplier
1/12 4.76° 1.0035
2/12 9.46° 1.0138
3/12 14.04° 1.0308
4/12 18.43° 1.0541
5/12 22.62° 1.0833
6/12 26.57° 1.1180
7/12 30.26° 1.1577
8/12 33.69° 1.2019
9/12 36.37° 1.2500
10/12 39.81° 1.3017
11/12 42.51° 1.3566
12/12 45.00° 1.4142

Calculating Pitch

One of the easiest and safest ways to calculate roof pitch is from inside your attic using a level, tape measure, and pencil. First, measure 12 inches on your level and make a mark. Then, hold the level flat against the bottom of a rafter while making sure the level bubble is centered between the two lines.

The final step is to measure vertically from the 12-inch mark on the level to the underside of the rafter above it. The distance from the level to the rafter shows you how much your roof rises for every 12 inches of length. This is a good rough figure that you’ll be able to pass along to a contractor.

At Roofr, we help customers connect with contractors quickly. Knowing the angle of a roof will enable you to provide better information as you receive multiple estimates through our system. Contact us today to start the Roofr process.

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A Valley on My Roof? - Roofing Language Explained: Valleys

Shingle roof with woven valley
Valley without metal flashing.

Valleys and Flashing explained in simple terms.

It may sound odd to learn that you have a valley on your roof. The place where two roof surfaces intersect is called a valley. This is one of the most common areas for a roof to leak. Non-permeable materials such as metal sheets or roof rolls are placed over these joins to seal out moisture. 

Weathered shingles and valley with flashing
Asphalt shingles and metal flashing on a damaged Canadian roof. 

Definition of a Roof Valley

The greatest portion of a roof is a flat expanse that is covered with a non-permeable material, such as asphalt shingles, metal tiles or slate tiles, to protect the roof structure and the interior of the building. When two roof surfaces meet, a valley is created. The valley creates a channel that allows moisture to run off the roof.

Importance of Flashing in Valleys

Valley with metal flashing to protect from rain damage
Water flows onto and down the metal flashing in the valley.

If your roofer says to put flashing in the valleys, the contractor is concerned that moisture may penetrate between joins. Flashing is placed in a valley to create an impermeable seal. Valleys often deteriorate more quickly than other portions of a roof, particularly if leaves and debris build up in the channel. If valleys become clogged, water will not run off. As debris accumulates, the flashing weakens and corrodes.

If your roof leaks, a roofing expert can inspect the roof surface and valleys to find the source. Roofr works with vetted roofing contractors who are licensed to work in your area. Each independent contractor provides a guarantee for labor and a warranty for materials. Roofr makes sure you're satisfied with the quality of work. Our goal is to hear you say, "My roofer did an excellent job. My roof looks great, the valleys are well-sealed and there are no problems."

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