Jesse and Holdfast are amazing for ICF supplies in Flathead Valley. Prices are competitive and when…read moreyou get talking you know you're not going to get ripped off. They've got your back. They have all the high quality Superform ICF blocks and accessories we needed for a complete ICF build. Other than purchasing ICF products, they work with ICF contractors and concrete guys if you need that. Definitely reccomend!!

From the owner: Elevate your next project with Holdfast ICF, Kalispell Montana's choice for ICF foundations, ICF…read morewalls and ICF construction. Explore our insulated concrete forms, ideal for residential and commercial projects, and see how our ICF can enhance your construction needs. At Holdfast ICF, we understand the unique needs and environmental challenges of building in the rocky and steep Kalispell, Bigfork, and Whitefish areas. Our mission is centered around you – helping you create durable, energy-efficient, and comfortable structures using the premier building solution, Insulated Concrete Forms (ICF). Tailored For You Whether you're building your dream home or a commercial project, our offerings are designed with your specific needs in mind. Made in USA & Canada As the Flathead Valley's leading supplier of insulated concrete form technology, we bring you Superform ICF blocks—manufactured in the US and Canada and acclaimed for unmatched quality. Sustainability & Innovation With ICF construction, prepare for reduced energy bills, superior insulation, and a quieter, more comfortable indoor environment.

Had two men from Lilianthal in my basement to put in insulation. The one guy was super rude and…read moredidn't bother saying hello. He pushed past me to use the bathroom in my home not once but twice and stunk up the whole house. Then I heard him hucking luggees in my basement. I was too scared to confront the situation because he looked dangerous. My dog wouldn't stop barking and I had to kennel him because he could tell this guy was bad news. I feel violated, disrespected, and I am completely shocked by this bad experience. I will be cleaning my house now of all the dirt they tracked in as well as clean my bathroom, and hope I don't step in a luggee that the vile man spit in my basement. I feel like I need 1,000 showers because I am completely disgusted!!! I do not recommend them if you want peace of mind and a clean house!

We are so grateful and impressed by the team at Lilienthal!! They did a great job and ended up…read morefinishing our job ahead of schedule despite the bumpy road of construction timelines with delays. The crews were friendly, punctual, and professional!! We are SO happy with their work!!!