Who We Are

Firwin Corporation is a leading manufacturer of custom insulation products for diesel and gas engines & exhaust systems, and industrial applications. Our 2 main product lines are removable and reusable insulation blankets (also known as removable insulation covers and removable insulation jackets) and permanent Hard Coat™ composite insulation. We also stock a wide range of off-the-shelf high temperature tapes and sleeves.

We service a diverse range of industries, providing insulation solutions for applications such as diesel and gas powered generating stations, gensets, on-road and off-road vehicles, as well as industrial applications such as process and steam line valves, flanges, and piping.


Firwin Corp has been in the insulation blanket business since 1982. Founded by 2 entrepreneurs Dave Fireman and Paul Winn (thus the company name Firwin), the company was acquired by Paul and Miriam Herman in 1989. From its small beginnings as a family business, Firwin Corp has grown over the years to its position today as one of the leading North American manufacturers of removable insulation blankets and permanent composite Hard Coat™ insulation solutions. The Herman family still owns and operates the business, with the next generation of family members holding key positions in the company.

Our Philosophy

At Firwin, our approach to business can best be summed up by the following statement: “How can we help you”? We are in the business of building supportive professional relationships with our clients, aiding them in making the best insulation decisions that reduce risk and promote peace of mind.

We strive to treat our all customers, be they big or small, with the patience and respect. Our goal is to provide our customers with the best insulation solution for their particular situation – to the extent that if we feel that the best solution lies outside our company, we will say so.

We are continuously making process and production improvements. We embrace technology innovations and find ways to incorporate these changes into our products. We have invested heavily in R&D and continuously strive to translate this research into new products. We work very hard for our customers, and do our best to meet their needs.

Our Standards

Firwin Corp is committed to excellence in customer service. We strive to respond to all inquiries within 24 hours. Have a rush order? We will do our best to accommodate you. Our in-house design team is ready to help you determine what insulation solution is right for you. If there is ever a problem with one of our insulation products, we will do whatever is necessary to make it right. Just ask our customers – most of our business comes from their referrals.

Just contact Paul Herman at
Toll Free: 1.877.FIRWIN7 347.9467

Seeking new and innovative concepts for cost-saving insulation solutions? We’ll be pleased to talk with you and tell you more.

Management Team


ISO 9001:2015:
Firwin Corp is proud to be an ISO 9001:2015 certified company.

pdf-icon ISO 9001:2015 Certified (PDF – 464KB)


UL2200 Certification:
The UL 2200 standard is geared specifically to Stationary Engine and Generator Assemblies. The purpose of the standard is to ensure that generators have been designed and built to guard against risk of fire, electric shock, and injury to personnel.

The UL certification applies to Firwin’s standard insulation blankets, with either FW1200 or FW1800 insulation.

Firwin blankets also meet Marine and Military Standards.