Better Billy Bunker Method
In 2009 Billy Fuller (owner and president of Billy Fuller Golf Design) was approached with a new concept for the Billy Bunker spec. The intent was to replace the liner with a manufactured binder to hold the gravel blanket in place, altogether eliminating the need for liners. Liners have always been the greatest challenge for Billy Bunkers, often being snagged by rakes and golf clubs, becoming exposed on edges and viewed aesthetically unpleasing. The binder allows water to pass through the stone at more than 1500” + inches per hour. After much study and testing, the Better Billy Bunker Method is a patented method and has been tested on hundreds of courses throughout the world. While these courses are located in varying climate conditions, one factor remains the same; excellent playing bunkers.
"The Better Billy Bunker Method is The Best Method to build a bunker I have seen. This method improves my original Billy Bunker Spec by eliminating the potential torn cloth Geo-textile liner which causes sand contamination. The Better Billy Bunker Method improves what has been the best bunker construction spec for 25 years. I recommend this method for the longest bunker life expectancy." Billy Fuller
The 5 Steps to the Better Billy Bunker Method:
1. Remove old sand and inspect drain lines
Excavate 6" profile to allow for the 2" gravel layer and 4" of sand. If plans call for an exposed thatch edge, calculate this depth in for further excavation. The floor should be smooth and compacted. Drain tile can be reused if it is still functional.
3. ST410 Polymer is installed by certified installer
ST410 POLYMER shall be sprayed by a certified and trained installer. The treated bunker shall be allowed to cure for approximately 24 hours prior to quality control. A sturdy pliable layer of glued gravel will be the result.
5. Sand installation
The tested and approved bunker sand is installed in the bunker and compacted at least four inches deep. Bunker sand should be examined for the proper particle size, color, drainage characteristics, angularity, angle of repose and ability to bridge with the drainage stone.
2. Install 2" layer of local gravel
A layer of approved gravel that is 3/16”-1/4” in size (4.5mm-6mm) shall be placed over the entire floor of the bunker 2" (50mm) deep. This gravel should be brought up to the edge of the bunker. The gravel may be deeper than 2" to shape the bunker's floor.
4. Polymer is cured for 24 hours and quality controlled
Every square foot of the bunker will be quality controlled to ensure that a proper application took place. After QC, sand may be installed immediately.
The end result is a great playing bunker no matter the weather conditions.