No! Low-e glass blocks excessive heat and UV rays that can harm plants, as well as providing extra insulation during cold weather.

Do glass blocks insulate well?

ANSWER: Glass-block windows are becoming increasing popular because of their attractive appearance, high security, low cost and energy-efficiency. A standard glass-block window has an insulating value about equal to a standard double-pane thermal window. This vacuum produces the good insulating quality.

Are glass blocks heat resistant?

Standard glass blocks naturally have a 45 minute fire rating. Furthermore, there is a line of glass blocks specifically made for commercial use or where fire rated materials would be needed. The fire rating on these special blocks is 60 minutes and 90 minutes.

Are all glass bricks fire rated?

There are a couple of common misconceptions regarding fire ratings and glass blocks. One is that all glass blocks are fire rated. Another is that blocks advertised as fire rated can be installed in any manner.

Are glass block windows worth it?

Glass blocks were a popular material during the Great Depression because of its low cost. Not only is the product itself inexpensive but it is a great way to save on energy costs. Because it’s not transparent and still lets light flow it’s a great material to use in interior walls, staircases etc.

What can I use instead of glass block windows?

Acrylic and glass blocks are attractive alternatives to standard glass. Acrylic- and glass-block products are making a statement as shower enclosures and replacement windows in homes of all styles these days.

Are glass blocks dated?

But glass block frames are semi-opaque alternatives that are used for windows and as non-load-bearing interior wall installations. From an interior design point of view, glass blocks may be considered dated. These shifts are responsible for the hot and cold trends in the popularity of glass block frames.

Is glass block cheaper than Windows?

You should expect to pay more for a glass block because of the extra benefits it offers compared to a regular window in terms of better insulation and durability. A single glass block can relatively cost around $15 on the lower side with specialty blocks that are colored or frosted running up to $50.

How strong is glass block?

The solid glass block R-value is 1.15. With hollow glass block and its inherent partial vacuum, a jump in R-value occurs: The R-value of thin glass block is 1.75 and the R-value of standard glass block is 1.96.

How much is it to install a glass block shower?

How Much Do Walk-In Glass Block Showers Cost? Most walk-in glass block showers cost anywhere from $1,200 to $3,000 installed. That includes just the glass block wall or walls, not the shower pan, shower valve, or any tile work inside the shower.

Are glass block windows waterproof?

When replacing basement windows, most people now consider glass block. It’s a good insulator, secure, and waterproof. It lets light in, but obscures visibility from the outside, and can incorporate small vents to allow air flow. It is durable, long-lasting, and virtually maintenance-free.

Can heat go through glass?

It is not heat that passes through the glass,but electromagnetic radiation in the infrared range, in the same way as the visible light passes. Glass is transparent to visible light and to most of the spectrum before and after visible light frequencies , depending on the optical properties of the specific glass.

Are glass blocks expensive?

Glass block windows are heavy and the process used to create them is expensive, so they can be a costly addition to your home when compared with the standard alternatives. A single glass block would cost approximately $15, with specialty blocks such as frosted or colored blocks can run up to $50.

How long does it take to install glass block windows?


How fast does glass heat up?

The specific heat capacity of a typical sample of glass is 0.837 J⋅K−1g−1 . In other words, it takes twice as much heat to raise the temperature of 1 g of wood by 1 K as it does to raise the temperature of 1 g of glass.

How well does glass conduct heat?

Glass is a very poor heat conductor. It has one of the lowest possible heat conduction a solid (without air trapped in it) can possibly have, this is mostly due to its lack of ordered crystal structure. Since it’s an insulator, the electronic contribution to the thermal conductivity is very small.

Are glass blocks making a comeback?

According to ABNewswire, market researchers have determined that the demand for glass block will increase by a Compound Annual Growth Rate of 7% by 2022. Glass block is not only for walls and ceilings but are frequently used for flooring to allow light to pass from one building level to the next.

Can cold air pass through glass?

You’re absolutely right that the cold isn’t radiating in, but the energy of the warm air in your house can certainly go into the window pane. But the glass also faces the outside air, which has much less energy than the window pane. And so, the window pane will donate its energy to the outdoors.

Are glass block windows energy efficient?

Improved Energy Efficiency – Glass block windows can greatly improve your home’s energy efficiency. Many standard glass block windows meet ENERGY STAR® guidelines because they are just as efficient as thermal pane windows, and they are airtight.

How much are glass blocks worth?

Glass blocks price ranges from $5 to $15 per piece. Custom made glass blocks are more expensive running as high as $50 per piece. The blocks are sold in batches like a dozen, half a dozen or five pieces depending on the manufacturer. A batch of glass blocks goes for $20-$1,000.