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Fiberglass Windows Raleigh NC

The Things You Need to Know Before Replacing Your Windows

Before you decide to replace your windows, there are few important things you need to know. Whether you want wood or fiberglass windows in Raleigh, NC it is important to do your homework before replacing windows. One of the most confusing parts of window replacement is the energy efficiency language.

The Language of Energy Efficiency

One of the hardest things about getting new windows is wading through all of the jargon. You might hear salesmen talking about the U-factor and VT ratings, and you may be left scratching your head. In order to overcome this obstacle you just have to do a little bit of research. Knowing what all of these ratings mean will help you pick out the best window for you. Here are five common energy efficiency categories and a quick explanation to help you pick out the best fiberglass windows in Raleigh, NC:

  • U-factor: This is a measure of how well the window insulates. This means it measures the rate of heat transfer. The lower the number the better the rating. The rating normally ranges from 0.25 to 1.25
  • Solar Heat Gain Coefficient (SHGC): This is a measure of how well the window blocks. That means it measures how well the window keeps out the heat caused by sunlight. The lower the SHCG number the better it is. The rating normally ranges from 0.25 to 0.80.
  • Visible Transmittance (VT): This is a measure of how much light the window lets through. The higher the rating the more light is let through. The VT rating normally ranges from 0.20 to 0.80.
  • Air Leakage (AL): This measures the rate at which air leaks through the window joints. The lower the number, the less air that leaks through. The AL is measure in cubic feet of air that passes through one square foot per minute (cf m/ft2) Today, most building codes require an AL of 0.3 cf m/ft2.
  • Condensation Resistance: This is a measure of how well the window resists water build up. The higher the rating, the less water that builds up on the window. The Condensation Resistance normally ranges from 0 to 100.

Finding a Contractor

Once you know a little bit about the energy efficiency language, you also need to be sure to find a reputable contractor to install them for you. Finding fiberglass windows in Raleigh, NC shouldn’t be a headache. Do your homework and find a reliable contractor before you get new windows.