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Shutters and R-Values: Compare Energy-Efficient Window Treatments

June 13, 2017

We make a big deal about energy-efficient window treatments. But that’s because we have proof to back up our claims. With the help of some outside research, we can chart the energy efficiency of the most often-chosen window treatments in Dover, from shades to blinds to shutters.

What Is R-Value And Why Does It Matter For Window Treatments?

Everything in your house that separates indoors from outdoors, from the walls to your window treatments, has an R-value. That number tells you how effective it is at blocking heat from passing through it. A bigger r-value means a better insulator.

white shades in Dover house 

So what difference can the r-value of a window covering make? Basically, a better insulator makes it easier to keep your home at the temperature you want. Whether you want to keep in the heat at wintertime or keep the heat out during the summer months, good insulation is crucial to that effort. That’s extra important for your windows, because they’re a likely reason for energy loss in your home.

Comparing R-values & Energy Efficiency Of Window Treatments

Every window treatment is not made equal, at least not in terms of energy efficiency. Though there’s some difference based on the material and construction between different brands and makes, below is what you can expect to find when comparing window treatments.

Window Treatment

Average R-Value

No window treatment

0.75-1

Blinds

1.5-2

Shades

2.5

Draperies

2-3

Wood Shutters

3-4

Cellular shades

4.5

Polywood plantation shutters

>6

R-values from HouseLogic & Energy.gov.

A quick look at the table shows you a few things. The first is that some window treatments offer almost no benefit at all (ahem, blinds), whereas others are total workhorses in insulating. That difference in R-value could make for a difference of several degrees – enough to make an impact in whether or not you turn on your AC.

The second is that the material of your window treatment makes a big difference. Cellular shades, which are made with a number of insulating layers designed to trap heat, can put a stop to heat flow much more effectively than pleated shades.

faux wood shutters in Dover great room 

The same way, Polywood® plantation shutters, built from a completely solid faux wood compound, are able to keep out heat a to a much greater degree than wood shutters. Natural wood can be permeable, with natural knots and gaps that allow heat to flow through them easily. Polywood shutters, fit with custom weatherstripping, make a solid seal on your window when shut, which is why they have that top of the line r-value of 6 and up.

Up Your Home’s R-value

The numbers don’t lie. Your window coverings play a big part in how comfortable your home can be. Think your home could be a bit more comfortable? We’ll help. Talk to the team at Sunburst Shutters Delaware by calling 301-835-1611, or use our free estimate request form below.