Warehoos is a mineral wool insulation supplier shipping to all 50 US states. We carry the rigid mineral wool boards, mineral wool batts, and air-sealing accessories that exterior continuous insulation, passive house, and high-performance wall assemblies require. We confirm stock and lead time when you order.
Mineral wool insulation SKUs we ship to the USA
PowerWool RigiBoard 80
- R-4.2 per inch (ASTM C518) — rigid mineral wool board for exterior continuous insulation
- Thicknesses: 1" to 5" online, and up to 8" on request (see Available sizes below)
- Sizes: 2' × 4' boards; coverage per bag runs from 64 sq ft (1") to 16 sq ft (4" and 5")
- Compressive strength 616 psf @ 10% (ASTM C165)
- Non-combustible (ASTM E136), flame spread 0 and smoke developed 0 (ASTM E84)
- Shop PowerWool RigiBoard 80 →
PowerWool RigiBoard PRO MAX
- R-4.0 per inch (ASTM C518) — high-density rigid mineral wool, 11 lb/ft³
- Thicknesses: 1", 1.5", 2", 2.5", 3", 4", 5"
- Compressive strength 755 psf @ 10% (ASTM C165)
- For exterior walls that need higher compressive strength (commercial assemblies)
- Shop PowerWool RigiBoard PRO MAX →
Rockwool Comfortboard 80
- Rigid stone wool board. R-value tested to ASTM C518 — see ROCKWOOL's current data sheet for applications and values.
- Thicknesses: 1.25", 1.5", 2", 2.5", 3"
- Continuous insulation for IECC climate zones 4–8
- Shop Comfortboard 80 →
Rockwool Comfortboard 110
- Higher-density stone wool board. R-value tested to ASTM C518 — see ROCKWOOL's current data sheet for applications and values.
- Thicknesses: 1.5", 2", 3"
- Shop Comfortboard 110 →
Rockwool Comfortbatt
- Cavity insulation for 2×4 and 2×6 walls (Comfortbatt R-15, 3.5"; Comfortbatt R-23, 5.5")
- For fire and moisture properties, see ROCKWOOL's current data sheet.
- Shop Comfortbatt →
Available sizes: PowerWool RigiBoard 80 and RigiBoard PRO MAX
All boards are 2' × 4', sold by the bag. Both products come in these seven thicknesses online:
| Thickness | Boards per bag | Coverage per bag |
|---|---|---|
| 1" | 8 | 64 sq ft |
| 1.5" | 6 | 48 sq ft |
| 2" | 5 | 40 sq ft |
| 2.5" | 4 | 32 sq ft |
| 3" | 3 | 24 sq ft |
| 4" | 2 | 16 sq ft |
| 5" | 2 | 16 sq ft |
RigiBoard 80 is now also made in thicker boards, up to 8". For thicknesses over 5", email sales@warehoos.com or call 1-877-383-2671.
Why builders order mineral wool from a Canadian supplier
Warehoos carries the SKUs that passive-house and high-performance builders specify, and transit time is quoted with your order.
Three reasons US contractors use us:
- Stock. We confirm current stock and lead time when you order.
- Cross-border logistics handled. Customs paperwork, brokerage, and freight quoted at order time. No surprise duties.
- Direct contractor pricing. Contact our sales team (sales@warehoos.com or 1-877-383-2671) for project pricing.
Cross-border shipping details
- US destinations: all 50 states
- Transit time: quoted with your order
- Carriers: LTL freight carriers for pallet orders; parcel via UPS/FedEx for smaller orders
- Customs: USMCA preference applied for cross-border shipments where eligible; duties and brokerage quoted at order time
- Documentation: commercial invoice + USMCA certificate of origin (cross-border only) provided with every shipment
Frequently asked questions
Q: Does Warehoos ship mineral wool to all 50 US states?
A: Yes. We ship to all 50 states, and transit time is quoted with your order.
Q: What's the R-value of the mineral wool boards Warehoos carries?
A: PowerWool RigiBoard 80 is R-4.2 per inch. RigiBoard PRO MAX is R-4.0 per inch. Both are tested to ASTM C518 (PowerWool data sheets). For ROCKWOOL Comfortboard, see ROCKWOOL's current data sheet. Full R-value table at /pages/r-value-mineral-wool.
Q: Is the mineral wool fire-rated?
A: PowerWool RigiBoard 80 is non-combustible per ASTM E136, with flame spread 0 and smoke developed 0 (ASTM E84). For ROCKWOOL Comfortboard and Comfortbatt, see ROCKWOOL's current data sheet. Mineral wool is inorganic — no food source for mold or insects.
Q: What are the specs of PowerWool RigiBoard 80?
A: R-4.2 per inch (ASTM C518), 616 psf at 10% deformation (ASTM C165), 8 lb/ft³, non-combustible (ASTM E136), flame spread 0 and smoke developed 0 (ASTM E84). Source: PowerWool data sheet, issued 2026-08-04. For high-load applications we also stock RigiBoard PRO MAX at 755 psf. For Comfortboard 80, see ROCKWOOL's current data sheet.
Q: Do you offer contractor or volume pricing for US builders?
A: Contact sales@warehoos.com or 1-877-383-2671 with your project details for a quote.
Q: How are duties and brokerage handled for US-bound orders?
A: Duties and brokerage are quoted at order time as a line item on your invoice. USMCA preference is applied where eligible. We use established cross-border carriers familiar with the paperwork — no surprise charges on delivery.
Q: Can I get mineral wool insulation for IECC climate zone 5 or 6?
A: Yes. Under IECC 2021 and 2024 (Table R402.1.3), a wood-framed wall in zones 5 and 6 can use R-20 cavity + R-5 continuous insulation, R-13 cavity + R-10 continuous insulation, or R-20 continuous insulation alone. R-5 is 1.5" of RigiBoard 80 (R-6.3). R-10 is 3" (R-12.6). Check the edition your jurisdiction adopted, and contact sales@warehoos.com for help with thickness.
Q: Is mineral wool a good choice for exterior continuous insulation?
A: It depends on the assembly and the priorities. Mineral wool is non-combustible (ASTM E136), drains and is vapour-open, which suits fire-conscious and moisture-managed assemblies.
Q: How long is Warehoos's mineral wool lead time?
A: We confirm stock and lead time when you order. Transit time is quoted with your order.
Q: Can architects request a quote for a spec project?
A: Yes. Email specs to sales@warehoos.com with quantities and project location. We reply with pricing, lead time, and a USMCA-eligibility check.
Ready to source mineral wool from a Canadian supplier that ships to the USA?
- Browse all mineral wool insulation products →
- Call our direct sales line: 1-877-383-2671
- Email for contractor pricing: sales@warehoos.com
Disclaimer: The information on this page is taken from each manufacturer's published data and/or open source information online, and is provided for general guidance only. Specifications can change and can vary by product, thickness and market. Always confirm performance values, code compliance and suitability for your assembly against the manufacturer's current data sheet before specifying or ordering. All trademarks are the property of their respective owners.