There’s no denying that glass walls are one of the hottest trends in residential construction — especially if you’re lucky enough to have a view lot. Whether multiple windows grouped together or glass walls that slide, pivot or accordion open, the effect brings endless views while satisfying an ongoing desire for a deeper, more intimate connection with the outdoors. The additional glass also brings in more natural light and can improve health. And windows with insulating argon gas can lower energy costs and help homes stay cool in summer and warm in winter. While surging in popularity today, the desire for glass walls has always been there. Jason and Signe Smith, who co-own smitharc architects in Dallas, Texas, have been fielding requests for big glass walls for more than 20 years. The difference today? Availability. Previously, larger units had to be imported and were cost-prohibitive for all but the most…