Roofing Materials
Napa Valley, Napa, County, San Francisco North Bay, Ca. USA

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The weather proofing material is the topmost or outermost layer, exposed to the weather.

 Many different kinds of materials have been used as weather proofing material:

Thatch is roofing made of plant material, in overlapping layers. Wheat Straw, widely used in England, France and other parts of Europe.

Seagrass, used in coastal areas where there are esturies such as Scotland. Has a longer life than straw. Claimed to have a life in exccess of 60 years.

Shingles, called shakes in North America. Shingles is the generic term for a roofing material that is in many overlapping sections, regardless of the nature of the material. The word is also used specifically to denote shingles made of wood.

Redcedar. Life expectancy, up to 30 years. However, young growth redcedar has a short life expectancy. High cost. Should be allowed to breathe.

Hardwood. Very durable roofing found in Colonial Australian architecture, its use now limited to restorations.

Slate. High cost with a life expectancy of up to 200 years. Being a heavy material, the supporting structure must be very robust.

Ceramic tile. High cost, life of up to 100 years.

Imbrex and tegula, style dating back to ancient Greece and Rome.

Metal shakes or shingles. Long life. High cost, suitable for roofs of 3/12 pitch or greater. Because of the flexibility of metal, they can be manufactured to lock together, giving durability and reducing assembly time.

Mechanically seamed metal. Long life. High cost, suitable for roofs of low pitch such as 0.5/12 to 3/12 pitch.



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Alphabetical Listings

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ABC Supply Co 
35 Jordan St, San Rafael, CA 415 257-5706

Allied Building Products Corp
4159 Santa Rosa Ave, Santa Rosa, CA 707 584-7253

Bright Group
3375 Browns Valley Rd, Napa, CA 707 224-6877

Ca Shingle & Shake Co Inc
156 Utility Ct, Rohnert Park, CA 707 584-3092

California Shingle & Shake Co 

1179 Western St, Fairfield, CA 707 427-0700

Davis & Assoc
1040 Main St, Napa, CA 707 224-5000

De Bel Roofing Supply Inc
2150 Redwood Hwy, Greenbrae, CA 415 461-9533

Debel Roofing Supply Inc
747 Petaluma Blvd S, Petaluma, CA 707 765-9722

Evans Roof Tile
9360 Hwy 116, Forestville, CA 707 887-2332

Hanson Roof Tile Inc
8668 Sparling Ln, Dixon, CA 707 678-3281

Pacific Supply
2301 Napa Vallejo Hwy, Napa, CA 707 253-7866

Pacific Supply
879 N Wright Rd, Santa Rosa, CA 707 546-7317

Roofing Supply Group Vallejo
500 Connolly St, Vallejo, CA 707 553-7723

Santa Rosa Lead Products
33 S University St, Healdsburg, CA 707 431-1477

Suisun Roofing & Supply
Yountville, CA 707 944-0188

Suisun Roofing & Supply
260 Benton Ct, Suisun City, CA 707 425-6211

Vaca Valley Supply
125 Grobric Ct, Fairfield, CA 707 864-6528
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Concrete, usually reinforced with fibers of some sort.

Asphalt shingle, made of bitumen embedded in an organic or fiberglass mat, usually covered with colored, man-made ceramic grit. Cheaper than slate or tiles. Various life span expectancies.

Asbestos shingles. Very long lifespan, fireproof and low cost but now rarely used because of health concerns.

Membrane. membrane roofing is in large sheets, generally fused in some way at the joints to form a continuous surface.

Thermosetting plastic (e.g. EPDM rubber). Synthetic rubber sheets adhered together with contact adhesive or tape. Primary application is big box store with large open areas and little vertical protrusions.

Thermoplastic (e.g. PVC, TPO, CSPE). Plastic sheets welded together with hot air creating one continuous sheet membrane. Can be rewelded with the exception of CSPE. Lends itself well to both big box and small roof application because of its hot air weldability.

Modified bitumen - heat welded, asphalt adhered or installed with adhesive. Asphalt is mixed with polymers such as APP or SBS, then applied to fiberglass and/or polyester mat, seams sealed by locally melting the asphalt with heat, hot mopping of asphalt, or adhesive. Lends itself well to all applications.

Built-Up Roof - Multiple plies of asphalt saturated organic felt or coated fiberglass felts. Plies of felt are adhered with hot asphalt, coal tar pitch or adhesive.

Sprayed-in-Place Polyurethane Foam (SPUF) - Foam sprayed in-place on the roof, then coated with a wide variety of coatings, or in some instances, covered with gravel.



PTFE, (synthetic fluoropolymer) embedded in fiberglass.

Corrugated iron sheeting a house under construction in Northern Australia. Shows two gables and external cyclonic fastenings. Metal roofing. Generally a relatively inexpensive building material.

Galvanized steel frequently manufactured with wavy corrugations to resist lateral flexing and fitted with exposed fasteners. Widely used for low cost and durability. Sheds are normally roofed with this material. Known as Gal iron or Corro, it was the most extensively used roofing material of 20th century Australia, now replaced in popularity by steel roofing coated with an alloy of zinc and aluminum, claimed to have up to four times the life of galvanized steel.

Standing-seam metal with concealed fasteners.

Mechanically seamed metal with concealed fasteners contains sealant in seams for use on very low sloped roofs.

Flat-seam metal with soldered seams.
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