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Mold: Signs, Types of Mold, Clean-up, Effects on Health, Toxins, Mold Prevention and Additional Resources

Understanding the exact nature of mold is well in order before proceeding to more detailed discussions regarding mold growth and mold control.
Mold is, to put it in the simplest of terms, a type of fungus. Fungi are classified as eukaryotic microorganisms. As far as numbers are concerned, only insects rank ahead of fungi in organic variety. Fungi are often divided into two broad categories by mycologists:

  1. Yeasts – Yeasts are mono-cellular fungi that typically grow and reproduce by simple budding.
  1. Mold – Molds are multi-cellular fungi. They are microscopic and typically grow and reproduce by a process called apical reproduction. Unlike yeasts, molds exist in characteristic vast networks.

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Roofing Work
Roofing Fundamentals and Safety Practices

A well-constructed roof should last from ten to twenty years, depending on weather conditions and the materials used in its construction; however, no roof is expected to continue forever. Most roofs will require a certain amount of maintenance and repair on an annual basis.

It is to your advantage to have an understanding of basic roofing fundamentals, even if you do not intend to do the work yourself because such knowledge can save you money when you deal with professional roofers. You will be able to appraise the work better as it is being done.
If you feel that laying a new roof or repairing a roof will be too complicated for you to handle, then contact a reputable roofing firm. Many are listed in the Yellow Pages, but you should check with the local Better Business Bureau about your choice before signing any contracts or making any commitments. The Better Business Bureau may have a file of complaints against the firm you choose (being in the Yellow Pages are only a listing, not a seal of approval). Never allow a door-to-door salesman to talk you into a “cut-rate” job. Very few reputable roofing firms do business this way.
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Materials
Asphalt Shingling, Built-Up Roofing and Wood Shingling

Asphalt shingles are the most common type of roofing material used on pitched roofs. They are lightweight, comparatively inexpensive, and available in many different colors, sizes, and shapes.
Asphalt shingles are sold in the form of individual shingles or as strips of shingles joined together in two, three, or four tab units. The strips are 36-inches long. Their width will vary from slightly over 11 inches to 12 inches wide, depending upon the style and manufacturer. Lock-type asphalt shingles are also available in a number of different styles.
Before laying a new roof with asphalt shingles, you must first calculate the total area to be covered. A high school plane geometry text will provide you with the formulas necessary to calculate the square footage of surface area. Many roofs form uncomplicated rectangular or squares.
Unfortunately, hip roofs, dormer roofs, and other types of minor roofs present more complicated surfaces. In any event, the total square foot area of the roof covering the structure must be calculated.
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Materials
Tile Roofing, Slate Roofing and Metal Roofing

Roofing tiles are made from a variety of different materials, including shale, shale and clay, cement, cement and asbestos, and metal. Both curved and flat types are available for installation on roofs. Curved tiles are manufactured in the mission and Spanish style designs; flat tiles in the shingle and interlocking designs.
Mission roofing tiles are laid in courses which overlap on alternating sides. The concave side, or cover, forms a course Cover Tile Used to Cap the Ridge of tiles which overlaps with the convex parallel courses on either side. The cover tile is nailed to a wood strip fastened to the roof sheathing; whereas the pan tile is nailed directly to the sheathing. The roof ridge is capped by a cover tile which is nailed to a wood strip fastened to the ridge.
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Roofing Work
Roof Contracting – Preparing to hire a Professional Roofer

There are many outstanding roofing companies, and your job, if you contract, is to find the right company. Your roof is a long-term investment spanning twenty to thirty-five years. This places you in the position of dealing with a contractor who knows you won’t need his services again for twenty years or longer. Once you have paid your contractor for completing your roof, the only residual value he can gain from you is the referral work you send him. A top quality contractor lives by referrals and will make sure his customers are pleased.
The flip side of this is that once you have paid your contractor for completing your roof, the only residual value he can gain from you is the referral work you send him. A disreputable contractor doesn’t care about references from you. There are enough easy marks out there that he doesn’t give a rip about anything but slapping your roof on as quickly as possible and getting your money. Things could be worse. Your contractor could take your deposit and disappear forever. Things could be worse still. He could screw up the job so badly that you suffer extensive damage to your home especially the interior.
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Roofing Work
Roofing Basics

All you need to know about roofing

Whether you will contract or do it yourself, there are specific decisions that need to be made. Color is extremely important not only aesthetically, but also as a matter of energy efficiency and durability. Installation of additional ventilation including power ventilators is important for comfort and energy consumption. Tool and clothing tips are important to the do-it-yourselfer. Read the following sections and combine the facts (and opinions) with your personal preferences and tastes, so you can decide which best suit you and your home. More…
Roofing Work
Roof Computations for an Overlay and Preparations for the Job

If you are doing the work yourself, you need to order your materials. There is only one way to find out what you need and that’s to get up on the roof and measure. But first, if there has been a problem with leaking, go up in your attic and check for rotten sheathing (plywood or planks) and rotten rafters. If an area of the roof is bad, you’ll see it from the attic and won’t get any surprises (like falling through) when you walk on the roof.
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