About us

Almost everyone can come up with an idea. What really matters is the development of practical products at the highest level.

About us



Permeable Hardscape North America LLC is your number one source for permeable grouting and bedding materials in North America. We are dedicated to bringing you the very best line of products, with a focus on delivering a product line you will love.

Since their entry into the permeable eco-friendly paving industry in 2010, Wolfgang Worrmann and Stephanie Goodwin, founders of Permeable Hardscape North America LLC, have come a long way from where they started. Their passion for "eco-friendly and permeable products" drove them to action to continually bring you the next generation in permeable hardscape products. We serve customers across the country and we are thrilled that we're able to turn our passion into a new direction.

Permeable Hardscape North America LLC is proud to announce that we are the North American General Importer for GftK GmbH, a pioneer and worldwide leader in the field of innovative mortar systems for DIY and commercial products. And we are committed to bringing their world-class products to you.


Since the foundation of our company in 1971 we are specialized in the development, production, and the sale of high end products in the domain of building chemicals for circulation areas of all kind.

Being the pioneer in the field of development of innovative mortar systems based on epoxy resins, we have set a milestone in 1985 already by introducing the first EP-jointing mortar, vdw 800, designed for a simple, quick, environment-friendly, and long lasting jointing of paved areas.

Due to our experience for many years combined with our permanent development, we are in the position today to offer the appropriate mortar for any application to our clients. Along with that, we are anxious to strengthen our leading position as problem solvers through permanent development in that area.

Since 1991 we offer a system solution for a long lasting, coloredcoating of circulation areas named COLOROUT, available in many different colors and offering a “built-in” grip in order to contribute to the safety of traffic participants. Until today, COLOROUT has perfectly proven its qualities on many thousand squaremeters of circulation areas.

In our German manufacturing plants in Rheinbach and Erfurt we produce high end products for the world market.


The GFTK production facilities producing quality products made of synthetic resin. Our own Research and Development department, develops formulas that satisfy highest quality standards. GFTK has also set up its own standards, that surpass the generally valid norms. Pavement fixing mortars and industrial flooring made of synthetic resins, are the main products that are developed and manufactured according to modern principles

CE identification

The entire GFTKproduct range has the CE identification. This certifies that we as manufacturer are in accord with the currently valid EU guidelines. The entire product range went though rigorous checks. In addition, all new products brought into the line are tested according to current norms and guidelines and given the CE identification

For over 50 years GftK has specialized in the development and production of innovative high-end building chemicals for use in circulation areas of all kinds. Being a pioneer in the field of innovative mortar systems based on epoxy resins, GftK set a major industry milestone in 1985 with the introduction of the world’s first epoxy paving jointing mortar, vdw 800, designed for the simple, quick, environmentally friendly, and long-lasting jointing of paved areas.

We produce our high end products for the world market in our own manufacturing facilities in Rheinbach and Erfurt Germany.

All GftK products are developed and manufactured exclusively at its wholly owned and operated facilities in accordance with ISO-9001. We are proud to confirm that all of our products are 100% developed and manufactured in Germany, where there is a long-standing reputation for engineering excellence, and which leads the world in the paving mortar industry.
PHNA LLC is based in San Antonio, Texas. We assist our clients with a commitment to service, support, and competent advice for homeowners and contractors alike. We offer continuous customer orientation to help you realize your project from planning to inception to completion.
We at PHNA, together with local partners, have developed a concept that offers our clients the best possible assurance that your project is delivered to the highest possible standard. The advantage of using PHNA is our long experience in the industry and our ability to provide sector-specific advice to ensure you get the technical support you need for your project, no matter how large or how small.
Our mobile app is coming soon.

Where we have established business

  • USA, Canada, Qatar, Korea, New Zealand
  • Great Britain, Ireland, Netherlands, Belgium, Luxemburg, France, Switzerland, Austria, Italy, Slovakia, Poland, Denmark, Sweden, Norway, Finland, Iceland, Spain, Romania, Estonia, Lithuania
phnausa instagram