Category Archives: Frequently Asked Questions

Old Stone Basement Foundation FAQ

This is part of a series of blog entries that will feature mason, Randy Ruth. Randy was the former lab technician at LimeWorks.us and received lots of questions on masonry and the use of our materials. We post some of these questions on our blog.  Look for “FAQ” in other titles of our blog. Q: […]

Let’s Talk Sand

Our Ecologic™ Mortar uses a sharp well graded proprietary blend, so it’s not just ANY sand! The dictionary definition of Sand: weathered particles of rocks, usually high in silica, smaller than gravels and larger than silts, typically between about 0.06 mm to 5 mm. The particles are hard and will not crumble. Sand is used […]

Colorwash Stain, For Brick Walls With Mismatched Brick

Q: There are some bricks in wall that are mismatched in color. Is there a way to have them match without removing them? A: While this question comes up from time to time, most often people don’t know that they can easily remedy such a problem and don’t bother to ask. By using silicate stains […]

FAQ Friday: What are Silicate Paints?

Silicate Dispersion Paint is also known as Inorganic Mineral Paints and is unique in regard to its ability to breathe and supply a long service life to masonry materials. Chemical mineral paints are based on “Waterglass” AKA Potassium Silicate, which has been described as liquid stone. When silicate Paint petrifies a mineral substrate such as […]

FAQ Friday

Two weeks ago I attended The 12th International Congress on the Deterioration and Conservation of Stone in New York City. It was four days long, jam packed with presentations that covered geology, physics, material science, engineering, chemistry, biology, architecture, and conservation. During this time I took lots of notes thinking that I may never be […]

Favorite Books on America’s Building Heritage and Masonry, FAQ Friday

While it may not be directly in front of you, information about our building heritage in the United States and countries around the world is available for free or next to nothing. Understanding the materials used in masonry construction over time can be a complex thread of knowledge. In short, as people change over time, […]

How To Stay Cool While Working with Lime in Extreme Heat

With temperatures across the U.S. exceeding well beyond the 90° F during the day and relentless scorching sun I have been asked the same question a lot in the past few weeks. Can or should I use lime products above the suggested 85° mark? Using Lime in extreme conditions can require extreme or excessive measure […]

How do Natural Hydraulic Lime Mortars Compare to Common Type-O Mortars Containing Portland Cement?

For well over 30 years it has been common practice to prescribe the use of a Type-O masonry mortar for use on the conservation of masonry buildings. The most common formula of a Type-O mortar is 1:2:9, a blend of 1 part white Portland cement, 2 parts Type-S hydrated lime (most often dolomitic lime) and […]

Understanding Mineral Paints and Stains for Masonry Applications

Ecologic™ Silicate mineral paints are mineral paints made using potassium silicate, also known as waterglass. They are combined with inorganic, alkaline-resistant pigments and these paints have zero VOC offgassing. Silicate Mineral paints were patented in Germany during the late 19th century. Examples can now be found around the world in masonry conservation and alterations as well […]

What Sand Should I Use With Natural Hydraulic Lime For Repointing My Building? FAQ Friday

Quick and short of it…. Make sure the sand meets ASTM C-144. But you might ask yourself, what the heck does that mean? ASTM C-144 is a standard specification for aggregate for masonry mortar, brought to you by the American Society for Testing Materials (ASTM). To start off many people will use the term aggregate […]