Vinyl Replacement Window Terminology

With so many homeowners in the market for more energy efficient windows and doors for their home, I thought I would use this week's article to cover the more common terms used to describe a window's ability to insulate your home from the elements. There is an organization called The National Fenestration Rating Council (NFRC). Their purpose is to test each window manufacturer's product to independently verify the ratings for each test administered. So, let's discuss each test and what it means.

First, there is the U-Factor. This number represents the rate that heat escapes through the window. Therefore, the lower the U-Factor, the better the window. Most vinyl replacement windows with standard, dual pane glass, have a U-Factor around .5. When you add LowE glass in place of the standard clear glass, the U-Factor comes down below .4. By replacing the air between the panes of glass with Argon or Krypton gas, the U-Factor can be reduced to around .3. The Government's energy star program requires a window to have a U-Factor below a certain number in order to be energy star rated. You need to find out what that rating is in your particular area of the country. You can start by going to the energy star website. In areas of the country where rebates are given for installing energy star rated products in your home, you will only receive the rebate by proving that your windows have a U-Factor less than the maximum allowed. That proof comes from the manufacturer's NFRC label affixed to each window.

Another test is called Solar Heat Gain Coefficient (SHGC). The SHGC measures a window's rate of heat penetration from outside. The lower the number, the better resistance there is to heat getting into the house from outside. There are also air and water infiltration tests. The air test actually tests how much air is able to pass through the window from outside to inside. Therefore, you want a low number. Typically, a .30 is the maximum allowable rate of air infiltration. Water infiltration tests the amount of water and pressure the window is able to resist. Therefore, the higher rating is better for this test. Frankly, i wish they would just rate all tests on a 1 to 10 scale, with 10 being best. Then, you wouldn't get confused trying to remember which tests should have high numbers and which ones should have low numbers. You can get more information on window testing by going to the NFRC Website .

John Rocco has been installing replacement windows since 1978. To learn more, visit How To Install Windows

In The News:


pen paper and inkwell


cat break through


Non Slip Maintenance Of Honed Interior Marble

A honed finish is a satin surface with relatively little... Read More

How To Buy Double Glazing In The UK

Double glazing reduces heat loss through your windows. You can... Read More

Repairing Your Own Machine Components

Many industrial concerns have workshops of their own. For the... Read More

Remedies for a Wet Basement

A wet basement can be just a nuisance or even... Read More

Single Pane Window Glass Repair in an Aluminum Frame

Let's suppose you still have those old aluminum single pane... Read More

Make Your House A Home

When thinking about polished floors, cushions in place, an exquisite... Read More

Solar Energy Advantages Disadvantages

Many of us know that solar energy is a good... Read More

Removing Your Old Wood Double Hung Windows

Last week I told you how to measure your wood... Read More

Types of Table Saws

A table saw is one of the most popular pieces... Read More

How to Use Do-It-Yourself Toxic Mold Test Kits

VANCOUVER, CANADA. Many homeowners, landlords, renters, property managers, business owners,... Read More

Grandfather Clocks Bring a Sense of Awe?Theyre So Tall

Standing tall and big are the stately grandfather clocks. They... Read More

Dual Pane Window Glass Repair

For the past few weeks, I have been explaining how... Read More

Log Homes for Beginners - 10 Steps to Success

For those who may be thinking of building a new... Read More

Is YOUR Home A Safe Home?

Do you or one of your family members suffer from... Read More

Laminate Flooring - Cleaning & Maintenance

One of the biggest advantages of laminate floors is that... Read More

Choosing a Vinyl Replacement Window Contractor

Whenever I write an article, it's usually tailored to the... Read More

Popular Trends in Home Technology

As a former home automation installer and a former manufactures... Read More

Unfinished Furniture - Finish It Yourself!

Unfinished furniture has started to become extremely popular in the... Read More

From Toss Out to Sensational Keeper - Lamp Re-Make

When the old lamp from my children's room was turning... Read More

How to Build a Home Sauna - Three Important Questions to Answer Before Building

Considering that home saunas are believed to produce numerous health... Read More

Chimney Cap Checklist: Four Quick Ways to Evaluate Your Existing Chimney Cap

While you are cleaning leaves out of your home's gutters,... Read More

Planning Permission and Building Regulations for Conservatories in the UK

Do I need planning permission for a conservatory?Do I need... Read More

Roof Cleaning - Making Your Old Roof Look Like New!

Many Florida residents that have come from the North are... Read More

Selecting a Laminate Floor to Suite Your Needs

The traditional look of hardwood flooring is timeless; its beauty... Read More

Your Building Your Dream Home, But Where Do You Start?

You have finally found the perfect lot, in the neighborhood... Read More

Selecting the Right Air Compressor for Your Air Tool

An air compressor is used to power air tools such... Read More

Trading in Corporate Office for Home Office

Six years ago, I had not yet turned on a... Read More

Do You Know How To Use Window Coverings?

Window coverings serve an important role in your home, giving... Read More

Work From Home and Make Money from On-line Rewards and Incentives Programs

You'll be amazed at how much free money you can... Read More

Persian Carpets - Popular Styles

There are numerous styles of Persian carpets. In fact there... Read More

Spring Chores at the Cabin

Whether you live in your cabin year round or it's... Read More

Here Comes The Sun: Solar Energy is Becoming More Attractive for Mainstream Consumers

The price of a barrel of oil has never been... Read More

The Art of Power Washing Decks

Since the Environmental Protection Agency (EPA) started banning the use... Read More