Polyisocyanurate (Polyiso) Roof Insulation

Paratherm polyisocyanurate products provide high-performance and cost-effective solutions for roofing insulation demands. The insulation boards are designed to be used in conjunction with Siplast roof systems, and offer a variety of compression strengths and facer types to meet different roofing project specifications.

Siplast Paratherm - Enhance your roofing investment

Whether it’s fire resistance, sustainable design, additional surface strength, or moisture resistance – Siplast Paratherm products & systems can bring more than just thermal value to the roof system.

Meet Your Siplast Partners

At Siplast, we never stop working to be your trusted partner. Meet some of the people who will be with you every step of the way.

Resources for you

Design Professionals
Get your job done even more efficiently.
Learn More
Building Owners
Access the information most relevant to your needs.
Learn More
Contractors
The information you need most in one place.
Learn More

Help and Support

Find a Representative

For information on Siplast systems, assistance with a project, and more, contact your local representative today.

Search Now

Contact Us

Have a question or want more information? Our support team is here to help with inquiries on products, programs, project queries, or your Siplast roof.

Submit a Claim

Need to report a leak or other performance-related issue? Our Guarantee Services Department can help process your claim.

Fill out a form

Rigid Insulation Systems