I plan on building a large prototype Solar Kiln for drying large timbers out of my own Structural Insulated Panels (SIP)

These kilns will need good insulation and will be exposed to the elements for several years. I have read considerable information on these panels and understand that the panels are structurally stronger than conventional stick built using only the panels themselves with proper installation. If any one out there has some Technical knowledge that you are can share, it will very useful.

1.What is the best construction/production method? 2. Use blank slabs with hot knife or pours into forms? 3. If pouring, is it best to recess edges for splines? If so what type of material is best to not stick to foam? 4.What will be the cost (approx.) of the expandable foam? **I have a hard wood floor Company source for 1" OSB (7’x3’) and (6’x4’) for the skin at about .03 per square foot** 5. Is that to thick or to small? 6. What do you think about using recycled rigid foam panel with the 1" OSB? 7. Would Expanded Polystyrene (MEPS), Extruded Polystyrene (XPS), or Urethane (Polyisocyanurate) be the best choice for this? **A company out of Framingham, MA will donate odd size and tapered rigid foam Panels of any of the above three types for the cost of shipping. ** 8. Can the recycled panel be glued and filled in with the same pouring method? Thank you.

-- Greg in Indiana (hogwarrior21@aol.com), January 08, 2002

Answers

Greg, I'm a big proponent of SIP's. Where are you in Indiana? There are manufacturers not far from you almost wherever you are who would give you a plant tour, I'm sure.

As to your list of questions, many depend on your costs. I would definately think I'd want the recesses for splines, etc. I think 1" thick OSB is overkill and would make the panels tougher to handle. The industry standard is 3/8". As to your OSB sizes (and hence, your panel sizes) I'd think you'd want to stay with the more conventional 8'H x 4'W at minimum. Again, the industry today goes from there to 8'H x 24'W.

Do a search for structural insulated panels and do some reading on the sites that come up. I think that'll help you out with some of the basics. When I know where you are I can direct you to a couple manufacturers near you. I hope this helps.

-- Gary in Indiana (gk6854@aol.com), January 08, 2002.