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Roofing

9/15/2017

1 Comment

 
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Homeowners are recommended to have their roofs professionally inspected on a regular basis. New roofs only to be inspected every 5 years, with more frequent inspections as the roof ages. Be sure to check for any signs of damage after storms with heavy rain and high winds. When shopping for a newly built or existing home be sure to hire a licensed and qualified home inspector to look over the prospective home's roof to report any defects.

The cost of roof repairs or replacements can vary greatly depending on the size and material used. A total roof replacement can cost from $1,500 to over $10,000, making roofs one of the most expensive components to repair within your home. Defects within a roof make the structure susceptible to moisture damage leading to rotting wood and mold growth. Remove any organic growth, including moss and vines, from your roof to avoid decay.

​It is good for homeowners to know the basic components to their roof in case any issues arrise. All roofs are made of the same basic setup, however the materials used may vary greatly. Age and location of the home can create an impact on the variation of materials used.
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PictureClay-styled shingles
Decking (or Sheathing)
Decking is the first layer that lays on top of the bones (Structural Trusses or Rafters) of the roof.
  • Wooden Planks were commonly used in older homes; this decking is generally sturdy and easy to repair.
  • Tongue and Groove boards create an attractive look. They were popular in the 1950s and 60s, today they are popular for cathedral ceilings.
  • Plywood or OSB is found in most homes built since the 1970s; it is cost effective and has an easy installation process.

Underlayment
Underlayment is a crucial part of the roof, it acts as a barrier to protect the decking and structure from moisture damage. There are 2 commonly used underlayments.
  • Felt is considered the standard underlayment installed by developers. Felt comes in 2 thickness levels, 15- or 30-lb, the thicker the underlayment the stronger it will stand up to wind, rain, and repairs. All felts are coated in either asphalt or fiberglass.
  • Synthetic is durable and acts as a water-repellent, however it is more expensive than traditional felt. 

Flashing
Flashing is designed to protect areas of your roof that shingles are not able to. These areas may include around skylights, drip edges, ventilation pipes, chimney bases, or valleys and intersections. In Virginia, homes are commonly built with 2 different types of metal flashing, however many other types of metals may be used. It is important to carefully choose your flashing to avoid Galvanic Corrosion from mixing incompatible materials.
  • Copper Flashing is an excellent choice as it is easy to use for most applications and is extremely durable. Copper also has a very long lifespan, saving you maintenance costs in the long run. Unless your copper flashing is coated with lead, it will have a reaction with galvanized steel.
  • Aluminum Flashing is popular because it is low-cost and easily manipulated. It is easily susceptible to corrosion around bodies of salt water and when in contact with pressure-treated wood or wet mortar.





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Shingles
​Shingles are designed for water to properly run-off your roof and avoid moisture damage. It is important that the shingles are laid down flat and completely cover the underlayment.
  • Asphalt Shingles are the most common and affordable shingle; they come in many different styles and colors.
  • Tile Shingles are very attractive, but are more costly than asphalt and can last up to 80 years. Ceramic styles are popular in Europe and some parts of Asia.
  • Wooden Shingles are durable (with a lifespan of 30-50 years) and are more expensive than tile shingles.
  • Metal Roofing is generally affordable and has a lifespan of 50 years. Metal roofing can be noisy when rainy or windy and is not recommended near salt water areas.
  • Slate Shingles have a lifespan of up to 100 years, however they are quite expensive and heavy. Due to their heavy weight they are not recommended for all houses.

1 Comment
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