Click here for Table of Contents
Click here to request of copy of H C Fennell’s Buyer’s Guide for Polyurethane Foam (PUF)
Highlights —
H.C. Fennell Consulting has developed two Guides. One to assist building owners and homeowners embarking on polyurethane foam insulation projects (Learn more). The second Guide is designed to assist spray foam installers (Learn more) in providing building owners with assurances that they are qualified to properly process and install their applications. These Guides build upon the decades of experience Henri Fennell has had as an academically trained architect, the owner/operator of a spray foam installation company, and as a consultant who has trained installers in building science, codes, and foam techniques, designed high-performance polyurethane foam projects, evaluated failed and successful system, developed remediation plans, and has represented clients as an expert witness in legal proceedings.
Efficiency Vermont Better Building by Design. May 6-7, 2026. Henri Fennell will present on two topics. The first is SIPs – it’s all about the joints…and more. This presentation covers how to properly seal panel joints properly, and to fix failed joints. The method of locating critical air leakage and the conditions discovered when these sites are uncovered will be discussed. Finally, a range of strategies for remediating SIP problems will be presented.
The second presentation is Remediating IAQ problems caused by foam plastic installations using the interstitial-space depressurization method. This presentation discusses the means of restoring safe indoor air quality after spray foam has been misapplied. (Click here to link to the BBD2026 website: Better Building by Design (BBD) | Efficiency Vermont)
Podcast: IDI Distributor’s Ken Allison interviews Henri Fennell on avoiding major pitfalls with Spray Foam Projects. Click here to listen to the IDI podcast R-Value.
If you are considering the use of spray polyurethane foam (SPF) in your home or your next commercial building project, but you don’t know which type of foam to select or who should install it, and you are wondering which building science issues you need to worry about, contact Henri for the assurance that your project will be successful and perform beyond your needs and expectations. The increase in the use of spray foam in construction has led to a growing need for experienced professionals to support owners and design professionals who want to implement this high-performance building enclosure material. As an architect with over 40 years of experience in the design and installation of polyurethane foam, Mr. Henri Fennell provides design support, project planning, building enclosure and foam commissioning and diagnostic services to the construction industry. His unique combination of experience in the design, manufacturing, and installation of polyurethane foam of all types in high-performance, high-profile, and unique applications allows him to offer support for any project that includes foam intended to provide insulation, air and vapor control, structure, and/or water management. As an architect and CSI/CDT who has worked on thousands of spray foam projects, he can develop detailing and specifications for the appropriate foam materials for any combination of the building enclosure functions required for residential and commercial projects alike.
Whether you are an architect, facilities manager, or a homeowner, now there is a way to answer all of the questions you may have about foam insulation from a single, unbiased source. H C Fennell Consulting works closely with industry suppliers, trade organizations, and the building science community to provide clients with up-to-date information about the foam industry and best-practice detailing, specifications, quality assurance protocols, and applications.