| Comparison |
| |
Single Pane Window - 1/8" Flat Sheet |
Pittsburgh Corning Mortared Glass Block Window |
| Energy Efficiency: |
Miminal insulating value. |
Comparable to a double pane window. Eliminates drafts. |
| Window Treatment: |
Needed to control privacy; thus adding extra costs. |
No need. Privacy controlled by pattern selection. |
| Security: |
Susceptible to breakage, entry and loss of household contents. |
Deters breakage and entry. Reduces the risk of burglary. |
| Maintenance: |
Dependent upon framing selection. |
No maintenance. |
| Replacement: |
Breakage requires replacement of whole window. |
Simple individual block replacement. |
| Water Penetration: |
Could be problem with below-grade installation. |
Water resistant. Acts as a solid concrete block wall. |
| Cost: |
Windows made with Pittsburgh Corning Glass Block are often less expensive. Check with your local distributor. |
Very comparable or less expensive. |
