He started in 2003. The industry caught up later.
Darryl Simpson built his first SIP structure before most contractors had heard the acronym. That was 2003. In the two-plus decades since, he has consulted on more than $150 million in SIP construction — residential custom homes, U.S. military installations, commercial processing facilities, medical buildings, and everything in between. He is not an academic who studies SIP construction. He is a practitioner who has done it at every scale.
The track record
In 2006, Darryl acquired a SIP-related patent and formalized his consulting practice. Shortly after, he partnered with Hill Phoenix — one of the largest commercial refrigeration manufacturers in the country — specifying SIP panel systems for cold storage and processing applications across their national footprint.
Military work followed. Over the next decade, Darryl consulted on SIP construction projects at some of the most demanding installations in the country:
- Camp Lejeune, North Carolina
- Marine Corps Base Quantico, Virginia
- Marine Corps Base Camp Pendleton, California
- Fort Story, Virginia
That work expanded internationally. Darryl has consulted on SIP projects for the Turkish Armed Forces and the Canadian Armed Forces — projects that required ballistic-rated panel specifications, climate-specific engineering, and procurement compliance across multiple jurisdictions.
On the commercial side, his client list includes Bayer Chemical, Oak Ridge National Laboratory, and Steris — organizations where a wrong panel specification carries real consequences. These are not forgiving environments. They require precise specification, proper engineering, and a consultant who understands what failure looks like.
Residential work runs in parallel. Custom homes from 1,500 to 10,000+ square feet. Timber frame hybrids. Tiny home prototyping at scale. Subdivision developments for builders taking entire projects to SIP construction. SIP ADUs, garages, roof retrofits. If it can be built with SIP panels, Darryl has likely built something like it.
What makes the consulting different
Darryl sells no panels. He has no manufacturer on retainer. No contractor receives a referral fee. This matters more than it sounds.
When a SIP manufacturer recommends a panel, they recommend their panel. That is not a criticism — it is simply the nature of the business. What it means is that no manufacturer can tell you whether a competitor’s product is better for your specific application, your climate zone, your load requirements, or your budget. Darryl can.
The consulting relationship is direct. One consultant, one client, one project. No account manager, no junior associate handling the work. When you schedule a call with Darryl, you are talking to the person who has been in the SIP industry for over 20 years — not a representative of one.
What Darryl consults on
- Panel selection — EPS vs. polyurethane, thickness, manufacturer recommendation
- Value engineering — reducing material and labor cost without reducing performance
- Architectural plan development — SIP-specific design from early concept to construction documents
- Engineering stamps — valid in all 50 states
- Spec writing — SIP specifications for contractors and plan sets
- Contractor vetting — evaluating SIP crews before you commit to one
- Project management — oversight from panel delivery through installation
- Site inspections — on-site quality review at critical construction milestones
The right call to make first
Most clients find Darryl after their first manufacturer conversation left them with more questions than answers. A few find him before — and those projects tend to go significantly smoother. The intro call is a paid engagement because it delivers real value from the first minute: an honest assessment of your project, what panel fits, what it costs, and what to do next.
That conversation is what Darryl has been having for 20 years. It starts with a call.