What You Need to Know About SHGC

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Information about What You Need to Know About SHGC

Phil Puccio

Whether you’re looking for replacement windows or patio doors for your home remodeling project, you need to learn how to check their energy efficiency ratings. These are important in understanding their efficiency and how they can keep the interiors of your home naturally comfortable for longer. One of these ratings measures the product’s potential to gain and lose heat, which is essentially how much sunlight it can bring into your home. This is known as the SHGC rating, expert window and Metal roofing contractor Hinkle Roofing explains how they are measured:

Things worth knowing about SHGC

This is how SHGC works

In almost all window products sold on the market, the glass absorbs heat and redirects it inward through conduction, convection and radiation. To measure this properly, SHGC (also known as the Solar Heat Gain Coefficient) is a standard rating used in the United States to estimate the amount of solar radiation that passes through the glass surface. This is relative to the amount of solar radiation that hits the glass as this is usually the primary method of energy transfer through window products.

If you are browsing multiple windows by a trusted one Roofing company for residential buildings, they guide you through the different reviews and help you find what you are looking for. SHGC in particular is influenced by factors such as reflection, absorption and transmission. They are expressed as a number between 0 and 1. The lower the SHGC, the less solar heat is transferred and the greater its shading ability. SHGC is tied to visual light transmittance (VT), which refers to how well the glass lets sunlight through. Therefore, the lower the VT, the lower the SHGC.

Who gives the SHGC ratings and how are they measured?

The NFRC (National Fenestration Rating Council) is a voluntary program responsible for providing SHGC and other energy efficiency ratings for qualified products. They carry out all tests, certifications and labels for windows, skylights and doors based on their energy efficiency classes. When looking for an energy efficient window, make sure that it bears the NFRC label so that you can determine its energetic properties for comparison.

Regardless of whether you are replacing a window or a Metal roof installed, Hinkle Roofing is your best bet to get the job done right. Call us today at (205) 324-8545 or fill out our convenient form Online contact form!

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