Glass Block Sizes: What Any Contractor Should Know Before Designing The Next Job


For contractors, building firms and architects; their reputations are constructed one-eighth of an inch at a time. Being equipped to figure out the square footage of an area, keep within the specifications and fill up any given area with accurate precision takes natural talent and great product knowledge. Quality Glass Block and Window Co. discuss their knowledge with other experts whose reputations depend on “getting it correct the very first time”.


When handling lumber, glass or perhaps cabinetry; dimensions and sizing tolerances are typically a guideline for just what is satisfactory and what is not. In the event the merchandise is excessively over tolerance, then there is wasted time included in getting the actual correct dimensions. The American Made Glass Block is created usually within one-sixteenth of an inch and is actually a more popular among architects for their consistency, strength and functionality. At times, plans arise and require perfect precision and this is when size matters. A minor miscalculation often means a large amount of wasted time and expense.


Nominal glass block sizes are NOT the precise size and the apparent thought would be; “why would the manufacture allocate a size which wasn’t exact”? This will come to be obvious in a moment. Glass blocks were meant to have a mortar joint in between the glass blocks simply because putting two glass blocks together will eventually bring about breakage. These mortar joints were supposed to be one-quarter of an inch wide. So any time a glass block size is called “nominal size”, it can make it very easy to compute the glass block measurements along a projected glass block wall, window or shower enclosure. For instance, an area to be filled with a glass block window is brick to brick; thirty-two inches by thirty-two inches. Having a nominal size of eight inches by eight inches, the professional can rapidly compute four rows tall and four rows wide equates to sixteen glass blocks required to fill the location with all eight inch by eight inch (nominal size) glass blocks. But actually, if the contractor would use silicone as opposed to the mortar, the mortar joints would not exist and the true size of the window would be thirty-one by thirty-one.