by • November 15, 2013 • FoundationsComments (2)9272

Craftsmanship of Concrete – Board Formed Walls

Contemporary Pool by Austin Architects & Designers Mell Lawrence Architects

  The photo above is from my clients pool that was designed by Austin Architect Mell Lawrence.  You can see more on his website here. (Full disclosure, I didn’t build that project)
  I’m working on another project for these clients with Alterstudio Architecture and the house we are building has alot of board formed concrete walls like in the photo above.  We are still early on the project, but the process of making the mock-up walls was really cool and I thought I’d shoot a video showing the craftsmanship that goes into these exposed architectural walls.  Enjoy!

Matt Risinger
Risinger Homes in Austin, TX

Risinger Homes is a custom builder and whole house remodeling contractor that specializes in Architect driven and fine craftsmanship work. We utilize an in-house carpentry staff and the latest building science research to build dramatically more efficient, healthy and durable homes.
Be sure to check out my video blog on YouTube, and follow me on Twitter @MattRisinger 

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  • Bryan

    I am a Project Engineer with McAlvain Construction in Boise, ID. We have been attempting to do mock ups of a concrete wall with horizontal rough sawn cedar planking on one side to see if we can achieve the desired look. The problem we are having is when we remove the forms we have lots of bug holes on the side with the cedar planking. We have tried various mix designs and consolidation methods to remove the air bubbles to no avail. I watched your video and observed some of your pictures of completed pours and was very impressed. I was wondering if you had any advice on the best type of wood to use, have you used cedar for these applications, the best mix design you have found, and what method of consolidation you have found works best to remove the air bubbles?

    • Matt Risinger

      Bug holes are always possible in board forming and sometimes desirable and wanted depending on size. Ideas that might help reduce them include:

      1.) Apply at least two layers of form release, allowing it to soak in, since cedar is such a soft wood and prone to soaking up the water in the concrete mix.

      2.) We have had good success with a mix design of 5 sack mix, straight cement, no fly ash. You could add a water reducer and pour a high slump mix.

      3.) Proper vibration is always paramount to a good finish. Sometimes the concrete vibrator is pulled out too quickly. Check out Oztec Concrete Vibrators website. It has great tips for proper vibration.

      4.) Changing your form lumber to a denser wood could also help.

      Hope this helps! Matt