Custom Landscape curbing. Colors, stamps, antiquing. 16 years experience with over 500,000 of curbing poured. All work guaranteed! Before choosing a Lawn Curbing Company consider the following: 1. Does the company have considerable lawn curbing experience? 2. Are the installations performed by the owner or just some guys that the company replaces every year? It doesn't matter if the company has been around for 10 years if the installers are doing it for their first season. 3. Is the company licensed, carry worker's compensation on its' employees, have liability insurance? I know a lot of companies that do not like the added expense in utilizing the above services. If you hire one of these companies you are putting yourself at risk. Having one of their employees injured on your property could result in huge out-of-pocket expenses from your household. 4. Does the company use the proper materials in the curbing mix? Washed concrete sand, portland cement, air-entrainment.