Business Details
31 Years
experience
Gypsum Underlayment Installation Experts
Permafloors was established in 1995 and has grown to become the most reputable gypsum underlayment installer in Montana and surrounding areas. As Montana's only USG Levelrock applicator, we specialize in radiant heat systems, sound and fire mitigation, and restoring uneven floors to level. Our family-run business prioritizes strong communication, jobsite efficiency, and customer satisfaction. With over 25 years of experience, we serve commercial and residential projects across Montana, Idaho, Wyoming, Washington, and North Dakota. Our team's expertise ensures fast, professional installations that keep projects on schedule while meeting LEED certification requirements.We maintain long-term relationships with top builders and utilize advanced equipment to maximize output. Our management team proactively coordinates schedules to minimize disruptions, and our rapid-set materials allow other trades to resume work within 24 hours. We pride ourselves on delivering fair pricing, reliable service, and solutions that enhance building value through improved thermal efficiency, acoustic performance, and fire safety.
Services
Gypsum Underlayment
Radiant Heat Systems
Sound Mitigation
Floor Leveling
LEED Certification
Details
- Year established: 1995
Highlights and features
- Montana's only USG Levelrock applicator with 25+ years of local experience
- Specialize in radiant heat systems with thermal mass optimization
- Deliver LEED-credit-eligible floor solutions
- Complete installations 15,000 sq ft/day at 1.5" thickness
- Maintain 24-hour turnaround for subsequent trades
Associations and certifications
- USG Levelrock
Services
Gypsum Underlayment
Our gypsum underlayment solutions create perfectly level surfaces while enhancing building performance. This lightweight concrete application improves thermal efficiency for radiant heating systems, reduces sound transmission between floors, and increases fire resistance ratings by 1-2 hours. The fast-setting material allows immediate foot traffic within 45 minutes and supports subsequent trades within 24 hours. Available in multiple strength grades, our USG Levelrock products deliver durable, code-compliant results for commercial and residential projects.
Radiant Heat Systems
We specialize in radiant heat system installations using thermally conductive gypsum underlayments. Our Levelrock RH product creates optimal thermal mass for even heat distribution while maintaining structural integrity. This solution reduces boiler operating temperatures by 10-15F, enhancing energy efficiency without compromising comfort. The integrated system provides draft-free heating that's particularly effective in large open spaces and multi-story buildings while meeting fire safety and acoustic requirements.
Sound Mitigation
Our sound mitigation systems combine gypsum underlayments with specialized sound attenuation mats to achieve superior acoustic performance. The Levelrock SRB and SAM series products address both airborne and impact noise transmission, achieving STC ratings up to 55 and IIC ratings up to 75. These solutions are ideal for multi-family housing, commercial spaces, and CLT construction projects requiring strict noise control while maintaining structural efficiency and LEED credit eligibility.
LEED Certification
We help projects earn LEED credits through sustainable material choices and construction practices. Our USG Levelrock products contain 94% pre-consumer recycled content and qualify for MR 4.1/4.2 (recycled materials), MR 5.1/5.2 (regional materials), and EQ 4.1-4.4 (low VOC) credits. The rapid curing process reduces construction timelines while maintaining indoor air quality. Our team provides documentation to support LEED certification for commercial and residential developments.
Floor Leveling
Our floor leveling services restore uneven substrates to precise specifications using high-strength gypsum compounds. Quicktop material achieves 10,000 psi compressive strength while feathering to 1/8" thickness. This solution effectively rehabilitates aging concrete slabs without complete replacement, saving time and materials. The self-smoothing application creates surfaces that meet strict flatness requirements for finished flooring installations while maintaining structural integrity.
People
Fraser Johnston
President
Fraser Johnston brings extensive construction and business development experience to Permafloors. With a background in management roles across construction and oil field industries, he ensures operational efficiency and strategic growth while maintaining the company's commitment to quality installations and customer satisfaction.
Galina Johnston
Office Manager
Galina Johnston manages Permafloors' office operations with organizational expertise developed through years in complex scheduling environments. Her administrative leadership ensures smooth project coordination and client communication, supporting the company's rapid-response capabilities and commitment to schedule adherence.
Pete Ferranti
Operations
Pete Ferranti oversees Permafloors' field operations with technical expertise in gypsum underlayment applications. His hands-on management ensures consistent quality control across installations while maintaining the company's standards for jobsite efficiency and safety compliance.
Questions
What makes Permafloors' underlayment better than traditional concrete?
Our USG Levelrock products offer faster installation (15,000 sq ft/day), lighter weight (55% lighter than concrete), and quicker curing (ready for finishes in 24 hours) while providing superior fire resistance and acoustic performance.
How does your radiant heat system improve energy efficiency?
The thermal mass of our gypsum underlayment retains heat longer, allowing boilers to operate at lower temperatures (10-15°F reduction) while maintaining consistent room temperatures without drafts or hot/cold spots.
Can you help achieve LEED certification for commercial projects?
Yes, our materials contribute to MR 4.1/4.2 (recycled content), MR 5.1/5.2 (regional materials), and EQ 4.1-4.4 (low VOC) credits. We provide documentation to support LEED certification requirements.
What soundproofing options do you offer?
We combine Levelrock underlayments with SAM series sound attenuation mats and SRB sound reduction boards to achieve STC ratings up to 55 and IIC ratings up to 75 for multi-family and commercial applications.
How quickly can you complete a floor installation?
At 1.5" thickness, we install up to 15,000 sq ft per day. Most projects see immediate foot traffic within 45 minutes and allow subsequent trades to resume work within 24 hours.
Do you work outside Montana?
Yes, we serve Montana, Idaho, Wyoming, Washington, and North Dakota, maintaining relationships with regional suppliers to ensure timely project completion across our service territory.
