What’s the Difference: Primers
Learn what the difference is between latex, oil-based and shellac-based primers and how to choose the right one for the job.
For most paint jobs, both inside and outside the house, latex paint is preferred. Latex emits fewer odors and VOCs than oil-based paint, and it cleans up much more easily. In one area, however, oil-based products still hold their own over latex: primers. With interior applications and exterior spot-priming, there’s another option: shellac-based primers. All three primers can be used under latex topcoats. Choose a primer based on the condition of the substrate to be primed and its location. Before you open the can, though, be sure to prep the surface you’ll be priming. No primer will perform its best if the surface hasn’t been thoroughly scraped, sanded, or otherwise readied for painting. Continue reading
Ever since the 10-story Home Insurance Building in Chicago was called the first “skyscraper” in 1885, architects have been striving to create ever-taller buildings. Ten stories quickly became 20, 20 became 50, and on and on. In 2009 the Burj Khalifa in Dubai became the world’s tallest building, with its 154 floors towering above ground level.
So why is the mayor of Portland, Oregon, calling a modest 12-story tower set for completion there next year “a true technological and entrepreneurial achievement?” It’s not the affordable housing the building affords, nor its dozens of bike racks or even the roof farm that has Ted Wheeler gushing. It’s that the Framework apartment building will be made almost entirely of wood. Continue reading
What is self-cleaning glass?
The first thing to note about self-cleaning windows is that they’re not, in fact, “simple pieces of glass.” They have a very thin outer coating of titanium dioxide, a white, powdery titanium compound best known for giving that dazzling gleam to paint, toothpaste, and all kinds of other bright white things.
Now if titanium dioxide is, essentially, the white in white paint, it might seem ludicrous to splash it all over a window—something we naturally want to be transparent. But the coating really is ultra-ultra thin. We’re talking about putting a layer 10–25 nanometers deep on glass that might be 4mm thick, which is like sitting a dime on top of the Empire State Building! It reduces the light passing through the glass by no more than about 5 percent. Continue reading
What are Low-emitting Materials?
Low-emitting materials are products that do not release significant pollutants into the indoor environment. Volatile organic compounds (VOCs) are chemicals found in many common products and building materials that can escape into the air and cause illness and allergic reactions. These emissions are one of the contributors to the situation known as “sick building syndrome” (SBS) in which building occupants experience health and comfort effects. Continue reading
Too much mold can affect the health of you and your family. In addition, mold can damage or destroy building materials such as wood or gypsum board in our homes. This article answers your questions about mold, what it is, where it grows, how it spreads, how it can be prevented. Continue reading
There are plenty of excellent insulation materials on the market today. Many of these have been around for quite some time. Each of these insulations have their own ups and downs. As a result, when deciding which insulation material you should use, you should be sure to be aware of which material would work the best in your situation. Considering differences like R-value, price, environmental impact, flammability, sound insulation and other factors, here are the 5 most common types of insulation materials:
The 5 most common types of insulation on the market.
Developing innovative solutions within an existing city layout may be one of the challenges faced by some cities when accommodating for growing populations. It can be time consuming and expensive for a city to rework its pre-existing urban infrastructure. Rather than retrofitting the city’s public transportation infrastructure, it seems to be more feasible for a city to create an innovative solution in collaboration with pre-existing developments. Continue reading