the 2 most popular methods to finish the joints between glass block windows and walls are mortar and silicone. The advantages and disadvantages of both methods are as follows:
Question 2 – Is it best to purchase premade windows with mortar or silicone joints between the blocks? – Mortar and silicone joints each have their own advantages and disadvantages, but purchasing pre-made windows is almost always a cost savings vs. doing the project block by block.
- Mortar Advantages – harder to break through, traditional masonry look, more variation in joint size
- Silicone Advantages – all glass look, windows come out smaller in size, easy to clean.
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