Grain Stand-Up Paddleboard

May 14th, 2007, by Mike

This is the big board we get the most requests for, so we’re making it happen.

Fresh off the design table is our new Grain 12′ Stand-Up Paddleboard, The S.U.B.. To be honest, this a side of the sport that none of us are all that familiar with, but with some research behind us and some good design work, we’ve come up with a pretty good starting point.

Our first 12′ SUB frame on the drafting table waiting for planks.

This first S.U.B. will be around 12′ x 30″ x 5″, but could vary a little as we start building it. At this size, we believe this board will be a better flat water cruiser/distance paddler than it will a wave catching machine.

With a fresh delivery of wood in the 12′ range, we plan to begin building it in the next few days. Once built and tested a bit, we hope to offer The S.U.B. in our line of custom boards as well as in our Home Grown Surfboard Kits.

Package the S.U.B. with a hand-made Whiskey Jack Paddle and you’re really ready to go. We’ll soon be working directly with Whiskey Jack to match wood grain from board to paddle, so we’ll keep you updated. We also hope to offer some other S.U.B. sizes and shapes in the near future, so keep sending us your thoughts and ideas. Thanks.

The largest and smallest boards in the Grain lineup. The 12′ SUB and the 5’4″Waka.

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41 Responses to “Grain Stand-Up Paddleboard”

  1. Bob Babcock Says:

    Sweet!…..can’t wait to see the finished product. I’ll be up to see you guys this summer. Maybe break for a brew after?

  2. Matt Says:

    Like a giant redwood next to a sapling. The SUB is the board we’ve all been waiting for…nice work Mike, thanks GRAIN!

  3. ty williams Says:

    the S.U.B sure looks crazy….like a giant skeleton of a banana or something!!!
    i sure like the fish in the photo though…can any of the boards ordered come pre waxed???
    love you guys and ill see you soon…cali is getting too busy for me.

  4. scott Says:

    how big of a guy will this thing float. Can it handle 240lbs. of heft?

  5. Bob Babcock Says:

    Thought you guys might find this photo interesting.

  6. Spiderman Says:

    Still, I’ll be standing outside in my 17′ Old Town Molitor picking off all the set waves!

  7. Troy Says:

    Whats the latest on this board?

  8. Rob Says:

    Hi……….I too am waiting to hear about this project! I would like a model that is good for catching small waves. How much do you think this will weigh when its done?

  9. Andy Says:

    SUP surfing has really grown in Santa Cruz, and many of the shapers have long backlogs on ordered boards. Cost is high too. This got me thinking about a building a hollow board, and I was wondering if Mike and the Grain team would be on it, and they are! Will kits and/or plans be available when prototyping is done? Also, for those who may want to occasionally paddle surf their SUP, max width should be about 27″, so this looks like a pure stand-up board. We have had a New England-like summer flat spell in Santa Cruz this summer, and a SUP board would be the cure. I can’t wait to see the finished board!

  10. Mike Says:

    Hey Andy,
    Thanks for the comment on our blog. How’s things going out there? We are working on a stand up board, but it’s still gonna be a while before we have one built, just hard to find the time, to much going on with customer orders etc. A good problem to have I guess. I agree that our initial design seems bigger (12′ x 30″ x 5″) then most boards people are on these days. I think I will shave it down some, maybe 4.5″ thick and 27″ or 28″ wide, maybe even drop it down to 11′ long, we’ll see.

    To answer some of the other questions, sure it should be able to handle 240 lbs without a problems, especially with that width. Wood boards tend to have more float then foam as well, so thats a bonus as well. Balancing will take some getting used to, but the board will absolutely handle the weight.

    As for weight, I surf a 12′ board everyday and it is in the 30 pound range. This board will be heavier due to the added glue, epoxy and glass. With that said, rememeber that weight does not necassarily increase relative to added length. Because they are hollow, the bigger the board, the more air is inside. I would imagine our SUB will be in the 35- 39 lb range, but thats just a guess at this point.

    Hope to have more on this board in the coming weeks.


  11. Chaz Says:

    Things here have swung the other way…the popularity of SUP has created a demand being filled with production/imported pop-out boards that are pretty stable but not very good in the surf. My 12′ tandem board, triple stringer with a good deal of rocker and narrower tail, is less stable but surfs like a shortboard once it drops in. The pop-out SUP’s are wider in the tail (no vee either) and have less rocker, making them more stable to paddle, but not as maneuverable. I have not seen any true hand-made SUP boards, all of them have been epoxy production deals. Are there foam SUP blanks available? Seems logical to make a hollow wood one. Am thinking of a longboard style sailboard as well, a wood version of an Exocet Kona.

  12. Andy Says:

    In Santa Cruz, Bob Pearson (Pearson Arrow Surfboards) has been hand shaping SUP boards for a while now. Steve Boehne at Infinity in SoCal is making some nice looking custom boards as well. For sure I hope that the hand-built surfboard industry continues to flourish in the post Clark Foam era, in glass, epoxy and of course wood.

  13. Andy Says:

    My interest in Stand Up Paddle Surfing is getting the better of me, perhaps enhanced by the extended flat spell that has plagued Santa Cruz for the majority of the summer. I went to my local specialty lumber yard at lunch one day this week, and have begun building a bass wood stand up paddle. Once it’s done, I’ll need something to paddle on, and sadly my trusty 10-0 doesn’t have enough float. Does anyone out there have a good set of rib templates and an outline in the 11 foot range? Alternatively, any tips on reverse engineering? I can probably get my hands on a production board or two, but don’t really know where to begin as far as taking lines off of one. The “slices” seem like the trickiest part. I have a bunch of old-growth heart redwood (from an old redwood water tank) that I plan to resaw for planking and rail strips. Yeah, a bit heavier than cedar, but I have it in 20′ sticks, and it is beautiful stuff. Cedar is surprisingly hard to find in NorCal.

    Do you anticipate having a stringer kit or plan set available when the Grain SUP gets through R&D?

  14. Brad Says:

    We don’t have “plans” per se… but the framesets for all of our boards are available separately and that defines most of the boards’ shapes. Because they are cut on CNC machines, that is really better than plans, I think. Almost all of the other parts are also available separately, except for manuals. There’s no reason that I can think of that the SUP frameset wouldn’t also be available.

  15. Andy Says:

    Thanks for the info. My preference would be to buy a frameset from Grain and supply the other materials myself. Is the manual a step-by-step builder’s guide? From the various web resources I have a pretty good idea of how to put a HWS together, but I’m sure there are tips and tricks from the pros at Grain that would be worth having. I recall reading something about development of a how-to video a while back, did that make it to production?

  16. Ryan G. Says:

    I just wanted to thank you again for giving my wife and I a tour three weeks ago. We up from Mystic came to visit and see your operation and interest in the SUP design. I am excited to get my hands dirty on building a SUP board. We were talkind a bit about rocker and my reading has lead me to believe that very little nose rocker is needed and some tail rocker, as well as parobolic rails for control in paddling. Like you mentoined above, width of 27-29. Hey thanks again for the great tour! I will be in touch.

  17. Brad Says:

    We continue to talk about producing a video on board building, but nothing is in the works yet. There are a number of builder-blogs where folks are documenting their experiences with our kits. We often visit these blogs and add comments that contain tips and tricks. It sounds like you may have run across these already. Good luck with your project – we are psyched that more and more people are building their own wood boards! If you have more questions email me directly.

  18. Bob Babcock Says:

    Strangely enough I will have a paddle before I have a board. I’m building a couple of SUP paddles (one for my brother) and the other for me. They’ll be similar to the WhiskeyJacks. When do you think the SUP kit will be ready?

  19. Andy Says:

    Not strange at all. On a whim, I bought some basswood durning a lunch hour, and have glued up a paddle blank, and will start shaping this week. It seemed like a good place to start…

  20. Peter Lataille Says:

    Just finished making my second SUP board. First one is EPS blank with hand lay up, weighs 38 lbs. Second one is hollow foam core sandwich using 1/8″ 8lb density skin over EPS on deck. Deck and rails, carbon fiber, Hull and rails 2- 6 oz layers. All of this is vacuum bagged. After painting, it weighs in at 26-27 lbs. The advantages of lower central rocker and increased tail rocker make a board that is both stable and fast to paddle as well as extremely maneuverable as it is surfed of the tail end. I can’t tell you how much I appreciate the light weight. Very responsive in the turns and the acceleration comes in handy on the late take offs. Also much easier to carry to those out of the way spots. I live up here near Bangor and would love to visit you guys some time to talk design. Send me a note and let me know how your SUP is coming along

  21. Rob Says:

    What’s SUP with the SUP? Updates? Kits? …………Patiently Waiting – Rob

  22. Mike Says:

    Thanks for your comment on the SUP. At this point our SUP design is still in works. We’ve been super busy building boards, getting kits out there and preparing for our West Coast tour and tradeshow. It’s still a major priority and were looking forward to having it done soon. We’ll keep you posted.


  23. Mike Says:

    What length and width boards did you make? Single fins?
    I’d be interested in seeing them.

  24. Louis Poulain Says:

    Anything new on the SUP front? When do you expect having a kit ready to go? Thanks, Louis.

  25. Nick Says:

    Thanks for your note. Our SUP board designs are still in the works. They got put on the back burner through the holidays. Were hoping to have something in the 10-11ft range built and tested soon. Once it passes all inspections we’ll be offering it as a kit. We’ll keep you posted here on the site.

    Thanks again and sorry for the delay.

  26. Louis Poulain Says:

    Thank you Nick. Looking forward to having a look at the specs and pictures of your prototype. Cheers,

  27. Peter Says:

    Reaallllly sorry for the long delay on the answer to your question. Climbing season happened and I forgot all about this thread. My first board was 11 feet by 29.75 inches. A really good place to start since if you can’t stand on it and paddle you can’t surf it. It has three fins cluster or thruster with the fins moved a little forward of the traditional longboard. It has a little less rocker than usual and a little more tail rocker. My second board is 10’4″ and 28.5 inches wide with the same 3 fins moved even more forward. The rails have less diameter than my first which decreases stability a little but increases holding power on the steeper walls. This board has less overall rocker.I just spent some time surfing other designs in CA and I think I did a pretty good job on my first SUPs. I’ve never had more fun in surf and these boards open up a whole new option in wave selection.

  28. Mike Says:

    Hey Peter, Thanks for keeping in touch, hope the climbing season was good. We are really working some SUB designs and I feel confident that we will have a design ready to put out there for review within a couple weeks. Our plan is to have a 3D model of a 10’6″ up on the website within a couple weeks. With a little feeback from the community (something we thrive on) and as long as we’re happy with it, we’ll have frames cut and begin the building process. We should be offering the board in kit form soon after. The 12′ SUB is next in line.

    Keep an eye on the blog for more details and we really appreciate everyones comments.

  29. rick Says:

    I can’t believe I found you guys, it came up on Google but on Dogpile, go figure. I am up in TC mich and have started to build an eps board 12′x31x5″. this is my first try. Iwould love to be working in wood than this stuff though the hot knife helps get it started but the rest….. I look forward to you folks coming out with something in that range, in a kit or plans? Ever concider the bead and cove cedar used on kayaks? Or is that not workable because of the radius?
    want to keep posted on your progress

  30. outkayaking Says:

    What’s the latest on the SUP? This would make a great winter project…

  31. Laura Says:

    Hello, paddling here in the Northwest, the opposite corner… would love to see a SUP kit from you guys, any updates on that front? Thanks!

  32. AndyG Says:

    I would be interested in coming up for a class and working on a SUP board if your ready. SUP is to hot right now not to do one.

  33. monty Says:


  34. Brad Says:

    Here’s the latest on SUP/SUB’s: Even though they are wildly popular, we’ve pretty much scrapped our plans to build the demo we were working on. Originally, we got kinda amped about it when we saw them starting to pop up at our local break (as you can tell from the above post) and started messing around with a prototype. After a while though, we had so many other new custom board designs being ordered, that it just got back-burner’d. We also had some design concerns that we weren’t sure how to address without some significant effort.

    Which isn’t to say we wouldn’t do one if we had an order for a custom… but that hasn’t happened yet, If it did, we would probably build it, get feedback on it, and then add it to the line if we thought it was something people would want. That’s the way all our boards have entered our line and become kits. So really until then we will probably just let the SUP juggernaut keep rolling by us. We’re certainly sorry to sound so positive about it in this post, but Grain runs largely on enthusiasm, so that’s our only defense!

  35. Retired Warren Says:

    I made a chambered Sourthern Cedar 8’10″ longboard this past fall. I used 1×6 planks. I drew the board profile on each plank, chambered each plank and then glued the planks together. I then applied six coats of spar varnish. The board weighs approximately 50 pounds and floats exceptionally well. The board is very stable, easy to paddle and catches waves very easily. However, I do not recommend this design concept. The planks were moderately expensive.

  36. Brad Says:

    Right – we calculated that building boards around a frame as we do uses about a third of the wood required by solid or chambered boards. Saves money and – more importantly – a better use of resources. Cool that you went old-school for your board, tho!

  37. Andre Siebert Says:

    Do you have plans available?

  38. Brad Says:

    Hi Andre,
    We put a hold on this project a long time ago. But we recently got an order for a new one, and we’ll be putting something together in the next few months. Sign up for our newsletter at the top of this page, and you’ll be sure to hear about progress on it. I think that I can guarantee that we’ll also eventually be publishing plans for it and that will be posted in the newsletter and here on our blog as well.

  39. Claudio Says:

    Hello guys, is there any news about SUP/SUB ???

  40. hutch Says:

    i want to build a Grain SUP for the summer here is so cal! when r u going to have a kit?

  41. jen Says:

    any updates on the SUP?