Do You Have A Tile | Slate Roofing Project We Can Help With?

Clay tile is produced by baking molded clay into tile. The density of the clay is determined by the length of time and temperature at which it is heated. Tiles may be glazed and also may have surface texture treatments applied. As a result, there are a wide variety of tile profiles, styles, finishes and colors available. In addition, there may be separate accessory tiles—matched to each field tile design—of various shapes designed for use on ridges, hips, hip intersections and gable ends. Installation methods depend on the nature of the tile being installed; that is, whether it is two piece, one piece, interlocking or flat.

Concrete tiles are made of Portland cement, sand and water in varying proportions. The material is mixed and extruded on molds under high pressure. The exposed surface of a tile may be finished with cementitious material colored with synthetic oxide additives. The tiles are cured to reach the required strength. They generally have lugs on their undersides for anchoring to batten strips. There are additional waterlocks or interlocking ribs on the longitudinal edges that impede movement and prevent water infiltration.

As with clay tile, there are a wide variety of profiles, styles, finishes and colors available. Color may be added to the surface of a tile or dispersed throughout (color through). Special texture may be added in surface treatment. Each type of tile roof system may make use of separate ridge, hip, hip intersection, gable end and finial accessory tiles of various shapes in addition to field tiles

As with all of the steep slope options tile requires an underlayment (or “felt paper” as it is frequently called) be installed over the roof deck before the application of slate. The underlayment performs two primary functions: it provides temporary weather protection until the slate is installed, and it provides a secondary weatherproofing barrier if moisture infiltrates the slate roof covering. Many tile roofs have outlived the underlayment felts over which they were installed. Therefore, an underlayment’s service life should be comparable to the design service life of the tile roof covering.

Tile Roofing Gallery

Roofing slate is a dense, durable, naturally occurring material that is essentially nonabsorbent. Two properties of slate are cleavage and fracture. It has natural cleavage, which permits it to be easily split in one direction. Fracture, usually occurring at right angles to the cleavage, is called the grain. Roofing slate commonly is split so the length of the slate runs in the direction of the grain. The surface texture of slate after being split for commercial use derives from the characteristics of the rock from which it was quarried. Some slate splits to a smooth, practically even surface, while other yields a surface that is rough and uneven.

The color of slate is determined by its chemical and mineral composition. Because these factors differ in various regions, roofing slate can be obtained in a variety of colors. In addition, exposure to weather causes slate to change color. The degree of change varies depending on the slate. Slate exhibiting minimal color change is known as “permanent” or “unfading” slate. Slate that shows a more marked color change is known as “weathering” slate. Between unfading slate and weathering is “semi weathering” slate.

As with all of the steep slope options Slate requires an underlayment (or “felt paper” as it is frequently called) be installed over the roof deck before the application of slate. The underlayment performs two primary functions: it provides temporary weather protection until the slate is installed, and it provides a secondary weatherproofing barrier if moisture infiltrates the slate roof covering. Many slate roofs have outlived the underlayment felts over which they were installed. Therefore, an underlayment’s service life should be comparable to the design service life of the slate roof covering.

Slate Roofing Gallery

Call us today to discuss your particular roofing needs. On-site estimates are always free. We look forward to hearing from you!

Call (503) 241-7978 / (360) 695-3356 or Email advancedroofingnw@gmail.com

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