Rated ExcellentHigh R-Value
High thermal performance per inch.
RMax-polyisco
Official Distributor
Rmax® polyiso is a one-step, continuous insulation solution that reduces construction time, saves labor and material, and lowers your building's carbon footprint. Browse our range of Rmax wall, ceiling, foundation and roof insulation products. Our customer service is available to guide you. If you need advice, just call a member of our team at 786-224-0029 or send us a message via Live Chat. To learn more about Rmax polyiso, visit www.rmax.com → Rmax® polyiso is a high-performance continuous insulation solution designed to improve building-envelope performance while helping reduce construction time, labour and material use. Browse Rmax wall, ceiling, foundation and roof insulation products available from Insulation4US.
Why Rmax Polyiso
Higher Performance. Greater Possibilities.
Rmax polyiso insulation provides high R-value per inch, moisture resistance and versatile solutions for walls, roofs, ceilings, foundations and specialty applications.
Moisture Resistance
Closed-cell polyiso protection.
Code Compliant
Tested and engineered systems.
Easy Installation
Lightweight and versatile.
RMAX
Featured Rmax Products
Shop the Rmax Range.
Rigid Board
RMax Thermasheath 4ft x 8ft Polyiso Rigid Foam Insulation Board
Rmax Thermasheath is an energy-efficient thermal insulation board composed of an environmentally sound closed-cell polyisocyanurate (polyiso) foam core bonded to reinforced aluminum foil facers on each side.
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Exterior Wall
RMax Durasheath®3 4ft x 8ft Insulation Board
Rmax Durasheath®-3 is an energy-efficient thermal insulation board composed of a closed-cell polyisocyanurate (polyiso) foam core bonded to inorganic polymer-coated glass fiber mat facers on each side
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Continuous Insulation
Rmax ECOMAXci® FR
Rmax ECOMAXci FR is a polyisocyanurate thermal insulation board designed to meet the demands of today’s building industry.
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Foundation
Rmax Below Grade
The construction of the RMax Below Grade Insulation Board features a polyiso foam core that is bonded to reinforced polymeric facers on both sides.
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Insulation Board
Rmax ECOMAXci Air Barrier
Rmax ECOMAXci® FR Air Barrier is an energy-efficient thermal insulation board composed of a closed-cell polyisocyanurate (polyiso) foam core bonded to glass fiber reinforced aluminum foil facers on both sides.
Shop Rmax Air Barrier
Tape
Rmax R-Seal 3000W Insulation Joint Tape 3" x 150' (16 Rolls)
R-SEAL 3000W is a nominal 2mil high strength dead soft white aluminum foil coated with cold weather acrylic pressure sensitive adhesive.
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Exposed Wall & Ceiling
TSX-8510
High-performance Rmax polyiso product for exposed wall and ceiling applications.
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Browse Full Rmax Range
Explore the complete range of Rmax insulation boards, accessories, roofing products, and wall systems.
VIEW ALL RMAX PRODUCTS →Why Polyiso
More Performance. Less Thickness.
Polyisocyanurate is a closed-cell rigid foam board insulation with facers on both sides. Rmax develops polyiso solutions for roof, wall, ceiling and specialty applications.
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High Thermal Performance
High R-value per inch helps achieve strong insulation performance within space-conscious assemblies.
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Reduced Material Requirements
Higher performance per inch can help reduce required insulation thickness in appropriately designed assemblies.
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Moisture Resistance
Polyiso's closed-cell structure provides low water absorption and low vapor transmission.
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Fire Test Performance
Rmax provides products and assemblies engineered for demanding fire-performance requirements.
Continuous Insulation
Rmax continuous insulation solutions are designed to help reduce thermal bridging and improve the performance of the building envelope.
Building Envelope
Continuous Protection.
Continuous insulation extends across structural members to help improve thermal performance. Depending on the selected Rmax system, the assembly can also address air, water and moisture control requirements.
Learn About Continuous Insulation →
Thermal Performance
Helps limit thermal bridging through continuous insulation coverage.
Air Control
Selected Rmax systems can contribute to air-barrier strategies.
Moisture Management
Polyiso provides moisture-resistant insulation performance.
Installation Efficiency
Rigid boards are designed for efficient cutting, handling and installation.
Rmax Solutions
Insulation for Every Application.
Choose the Rmax solution that matches your project, from below-grade foundations to exterior walls, ceilings, roofs and specialty applications.
Below Grade & Foundation
Insulation solutions designed for exterior foundation and below-grade applications.
Shop Below Grade →
Exterior Wall & Ceiling
Continuous insulation and sheathing options for commercial and residential envelopes.
Shop Durasheath →
Roof Insulation
Polyiso roof insulation options designed for demanding roofing applications.
Shop Recover Board →
Specialty Applications
Rmax products are also used across specialized industrial, residential and commercial applications.
Shop Multi Max →Why Insulation4US
The Best Place to Buy Rmax.
1
Dedicated Rmax Product Range
Shop Rmax polyiso insulation boards, continuous insulation products and R-Seal accessories from the dedicated Rmax collection.
2
Competitive Pricing + Volume Discounts
Trade pricing and quantity discounts for contractors, builders, and commercial buyers. Custom quotes available.
3
Nationwide LTL & Freight Delivery
Full pallet and LTL freight shipping to job sites, warehouses, and distribution centers across all 50 states.
4
Expert Technical Support
Call 786-224-0029 for help selecting the right product, thickness, and system for your project.
By The Numbers
80K+
Registered Members
10K+
Products In Stock
50
States Served
4.9★
Customer Rating
Need Rmax for a Larger Project?
Get in touch with our team for product guidance, project requirements and a custom quote.
Delivery Information
Rmax Delivery Details
- Rmax orders generally arrive within 5–7 working days.
- Live delivery date estimates are displayed on each product page.
- Delivery will always take place between Monday and Friday.
- Delivery charges are location-based, and will be calculated at checkout.
Questions? Call 786-224-0029 or contact our sales team →
Ready to Order
Ready To Order Rmax.
Browse our full range or get a custom freight quote for your project today. Expert advice available by phone.
Or call our experts:
786-224-0029