No, quite the opposite. The R-value for Premier Series glass block is 1.96 - more than twice the R-value for flat, single-pane glazing (THINLINE™ Series glass blocks have slightly lower R-values of 1.75). You can add the benefits of increased protection from solar heat gain with LX FIBROUS GLASS INSERTS. Remember, this degree of insulation comes to you without the maintenance and upkeep demands of your conventional windows.

No. Our products do not operate in this manner. Minimal benefit is netted when the product is doubled. See similar questions...

R-value is an assigned number derived from a specific testing procedure to determine a materials (or building assemblage) "resistance to conductive heat transfer". The higher the R-value, the more resistant a material (or building assemblage) is to conductive heat transfer. See similar questions...

A NRG Block is six to ten times higher in R-Value than a common block, which ranges from 1.5 to 2.5 depending upon the aggregate used. See similar questions...

Other blocks using inserts or hollow core blocks with poured insulation range between 5 and 6 for a 9 and 10" block. See similar questions...

Always on the inside. The film will stick to the outside, but it will greatly reduce the life of the film. This is due to the fact that the UV stabilizers are incorporated within the film's mounting adhesive, so the adhesive side must be facing the sun (installed on the inside, facing out). See similar questions...

Absolutely! And you have several options. In addition to loose block, Monroeville Glass Block carries a full line of do-it-yourself installation methods to include our patented CrystaLok™ vinyl-framed glass block window systems. See similar questions...

No. By placing two layers together, you will still only have one reflective surface. The only additional R-Value you will achieve is the additional R-Value of the bubble layer itself, which is an R.5. See similar questions...

That's a good question, but unfortunately the answer is not so simple, Window thermal performance is measured as a U-Value which Is the reciprocal of the R-Value ( R-Value = 1/U-Value. For example. R 2 = U .50, or 1/.50 = 2) A bit of background: the R-Value measures the resistance to heat loss or gain, while the U-Value measures the transmittance of heat through a material. The higher the number in R-Value the better the resistance, so the better the insulating value. See similar questions...

No. Products with R-values reduce rates of "conductive" heat transfer and are tested for this characteristic. Radiant Barriers provide benefit by dramatically reducing "radiant" heat transfer which is just as quantifiable but not related to R-value type performance. See similar questions...

Perhaps no other building material combines glass block's unique combination of timeless beauty, practicality and flexibility, as well as the added benefits of privacy and insulation. See similar questions...

Logs themselves are very good natural insulators and radiate back into your home warm air in the winter and cool air in the summer. The calculation is R = 1.25 per square inch. Our 12 to 14" logs are giving you a wall with an See similar questions...

Not really. Pittsburgh Corning Glass Block products are right at home in the demanding environment of a shower. They're virtually maintenance free, they afford privacy and they make your shower seem larger by letting in lots of light-all while adding decorating and design options you just can't get with other building materials. For even easier cleaning, you may want to use a non-mildew-forming silicone or acrylic sealer to coat the mortar joints. See similar questions...