Permeable
Jointing & Protection Products


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Permeable
Bedding Products


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Gravel / Chipstone Binder
Products


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What we do

GftK – A pioneer in the industry

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.

Production

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

Made in 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.

Customer Service

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.

Hotline

  • Permeable Hardscape North America
    1-844-880-5065

Project Support

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.

Mobile App

Our mobile app is coming soon.

System Warranty

10 Year System Warranty

The PHNA/GFTK 10 year system warranty is a special advantage for any customer. Based on 50 years of experience manufacturing industry-leading building materials, we are confident that we are providing the highest quality products to our clients.

Become a Dealer

Become a Dealer

For more information contact us here

Become a Dealer

Northeast Hardscape EXPO

AWARDS OF EXCELLENCE

Presented to Permeable Hardscape North America

We have received one of the highest awards for the construction industry.

AWARDS OF EXCELLENCE

News

NEHEXPO
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PHNA is a member of:

Natural-Stone-Institute
Masonry and Hardscapes

Our Partners

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SHS Distributors is a wholesale company focusing primarily on hardscape dealers
YOUR ONE-STOP SHOP FOR PORPHYRY AND GROUT

PHNA Highlights and see sophisticated products

Here you find a selection of our top selling products

Xtreme Easy

Our DIY permeable joint compound

  • No mixing
  • No waste
  • No hazing
  • Can even be applied in light rain
Xtreme-EASY_33lbs

Vario Sand

  • Water-permeable
  • Air-drying
  • Self-compacting
  • Can be applied in light rain
  • Clean, stain-free surface
  • Pressure washer friendly
  • 1/8'' joint width suitable for ceramic tile, 1/4" for concrete pavers
  • For pedestrian traffic loads
Vario-jointing-sand_55lbs

Classic

  • For light to medium traffic loads
  • For joint widths from 1/8"
  • Water permeable
  • Highly frost and de-icing salt resistant
  • Very free flowing
  • Can be applied to ground temperatures of > 32°F
Classic_55lbs

Xtreme

  • Water-permeable
  • Can be applied in rain and low temperatures
  • Self-compacting
  • Clean, stain-free surface
  • No need to protect surface from rain
  • Highly frost and de-icing salt resistant
  • Durable and abrasion resistant
  • Pressure washer friendly
  • 3/16'' joint width or larger
  • For light to medium traffic loads
Xtreme_55lbs

Xtreme plus

  • Very slightly water-permeable
  • Can be applied in rain and low temperatures
  • Self-compacting
  • Clean, stain-free surface
  • No need to protect surface from rain
  • Highly frost and de-icing salt resistant
  • Durable and abrasion resistant
  • Pressure washer friendly
  • 5/16" joint width or larger (1/4" with PHNA approval)
  • For heaviest traffic loads
Xtreme-Plus_55lbs

Xtreme Ceramic

  • Water-permeable
  • Can be applied in rain and low temperatures
  • Self-compacting
  • Clean, stain-free surface
  • No need to protect surface from rain
  • Highly frost and de-icing salt resistant
  • Durable and abrasion resistant
  • Pressure washer friendly
  • 1/8'' joint width or larger
  • For light traffic loads
Xtreme-Cermaic_22lbs

Xtreme Gravel Lock

  • Highly water-permeable
  • Suitable for extra-wide joints
  • Can be designed to accommodate up to light vehicular traffic loads
  • Pressure washer friendly
  • High UV resistance
  • Very high resistance to yellowing
  • Suitable for clean aggregates 1/16" to 1" in diameter
  • Suitable for glass chippings
  • Suitable for damp aggregates
Xtreme-Gravel-Lock_1.3Gallon

Xtreme Grit plus

  • For light to medium traffic loads
  • For any type of grit and gravel includes fines
  • Water permeable
  • Very durable and frost-resistant
  • Can be applied to ground temperatures of > 50°F
Xtreme-Grit-plus-stabilizer_5Gallon

Xtreme Trassbedding Compound

Frost resistant drainage mortar

  • Highly water-permeable
  • Frost and de-icing salt resistant
  • No efflorescence despite rapid hardening
  • High-quality plastic coating resists capillary effect
  • For light to heavy traffic loads
  • Compressive strength up to 5500 psi
  • Eliminate the need for a concrete sub-slab
  • Can be grouted 24 hours after installation
  • Compatible with radiant heating / snowmelt systems
Trassbedding-Compound_55lbs

Xtreme Adhesion Elutriant

  • For light to heavy traffic loads
  • Fast hardening
  • Desired quantity can be mixed as needed
  • Suitable for use with under-surface heating
  • Laid "wet-to-wet" on the Trass Bedding
  • Surface can be opened 24 hours after application
Adhesion-Elutriant_55lbs

Stone Protect 3 in 1

  • For natural stone and other paving substrates
  • Grouting relief for subsequent jointing with resin binder
  • Hydrophobic – water repellent
  • Oleo phobic – oil repellent
  • Reduces staining and contamination for easy care
  • Vapor permeable
  • Solvent free
  • Quick drying
  • Suitable for use on sensitive stone before the grouting
Stone-Protect-3in1_1.3Gallon

10 Year warranty

OUR 10 YEAR SYSTEM WARRANTY! will protect your Project…!

  • Squares!
  • Paths!
  • Public Areas!
  • Streets
phna-10-Year-Warranty
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