Blank weights are an issue of blank strength vs. weight, whereby heavier foam equals better resistance to dents on the deck. Some of the choices for foam blanks include Ultralight, superlight, superblue, supergreen, classic, etc. Deck dents are common to ultra light, super light, and super blue, their lighter weight makes them a performance choice. The weights are competition light, light, medium, and heavy. Mack Surfboards uses Blue unless otherwise specified by the surfer.
Prices for custom blanks are available on a quote basis from Clark Foam. Doing things like using custom stringers and glue colors define a custom blank. Ordering custom blanks adds a minimum delay of one week, and can take as long as 4 weeks, depending on the schedule of Clark Foam. Generally the summer months are the busiest times in the shaping industry, so waits may be longer then. Please take this into consideration when ordering your board.
The fastest way to get a board is to use a stock blank. Stock blanks are available in ultra, super blue, super green, and in stringers 1/8" to 1/4". Basswood stringers are standard. Other stringer woods are available on a custom basis, at a slight added expense. Things like spruce, cedar, redwood, and balsa are some alternative custom choices, but if something really special is necessary, please inquire.