a sectional side view of first alternative embodiment it can be seen that insulation 4 is placed adjacent to both first and second face of compressed straw panel as with the preferred embodiment said insulation is a non woven material made of fiberglass rock wool or mineral wool with a density in the range of 0 7 4 0 lbs ft 3 11 2 64 2 kg m 3 in the first alternative embodiment as illustrated insulation 4 completely fills the space between first and second face of compressed straw panel 1 and first and second gypsum board sheets 3 the only exception being the small space above and below z channel 2 that is created due to the non right angle of said z channel as previously mentioned it is recommended that said insulation 4 be attached to said compressed straw panel by adhesive or other suitable means referring to fig4 a an isometric cutaway view of a second alternative embodiment is shown the second alternative embodiment also comprises a substantially sandwich configuration with each component aligned in substantially planar relative configuration compressed straw panel 1 is attached on first face directly to a gypsum board sheet 3 by attachment means 10 said first gypsum board sheet comprises first outer face of wall construction in this embodiment attachment means 10 may be a penetrating fastener such as a nail or screw a strong adhesive such as an epoxy resin or any combination thereof compressed straw panel 1 is attached on second face to a plurality of z channels 2 as illustrated each z channel is.