Wholesale Insulation Rolls
Fiberglass insulation rolls in 4-foot, 5-foot, 6-foot, and 8-foot widths. R-8 through R-30 thermal ratings. Direct from NAIMA-certified U.S. manufacturers at the actual factory wholesale rate — no distributor or retail markup.
Fiberglass Insulation Rolls Explained
Insulation rolls are continuous lengths of fiberglass insulation packaged on a roll rather than as pre-cut batts. The installer unrolls the material along the wall or roof surface, cuts to length at each bay or run, and secures the roll in place with banding, staples, or seam tape. The continuous format reduces seam count on large overhead and wall runs — a 50-foot roll covers an entire metal building wall span in one piece, where pre-cut batts would have 12+ butt joints across the same distance.
The underlying fiberglass and R-value performance are identical between rolls and batts. The difference is purely package format. Rolls dominate metal building, pole barn, garage, and commercial applications because the continuous format matches how those buildings are framed (long horizontal purlins and girts rather than short vertical stud bays). Batts dominate residential framed-wall construction where the 48-inch batt length matches standard 16-inch and 24-inch on-center stud spacing exactly.
At Insulation Overstock, every product in the catalog ships as rolls. Roll widths and lengths are listed below; pricing is the same per square foot regardless of format. The calculator above prices the material by total square footage, and roll dimensions are matched to your order at fulfillment time.
Insulation Roll Widths and Lengths
Standard Widths
| Width | Best Application | Available In |
|---|---|---|
| 4 ft | Standard pole barn girt spacing | All facings, all R-values |
| 5 ft | Metal building purlin spacing (5' on center) | All facings, all R-values |
| 6 ft | Commercial buildings with 6' purlin spacing | All facings, all R-values |
| 8 ft | Commercial scale, wide-span warehouse | WMP-30 only |
Standard Lengths
Roll length varies inversely with R-value — thinner R-values pack more square footage on a roll than thicker R-values:
How Much an Insulation Roll Covers
Coverage per roll equals width times length. Quick reference for common sizes:
| Roll Dimensions | Coverage |
|---|---|
| 4 ft x 50 ft | 200 sq ft |
| 5 ft x 50 ft | 250 sq ft |
| 6 ft x 50 ft | 300 sq ft |
| 8 ft x 50 ft (WMP-30 only) | 400 sq ft |
| 4 ft x 100 ft (R-8) | 400 sq ft |
| 6 ft x 30 ft (R-25) | 180 sq ft |
To estimate how many rolls you need: total project square footage divided by coverage per roll, rounded up. For a 2,400 sq ft envelope using 6 ft x 50 ft rolls (300 sq ft each), you would need 8 rolls. Add one extra roll for waste and cutting margin.
For square footage calculation help, use the Insulation Square Footage Calculator.
Insulation Roll Facings Available
Every insulation roll sold here comes with one of these facing options. Selection drives moisture management, aesthetics, and tensile strength.
Vinyl-Faced Rolls (Most Common)
- VR-R Plus (PSP): The value-priced general-purpose facing
- WMP-10 (PSK-STD): 10-perm rating, standard for dry-climate metal buildings
- WMP-30 (PSK-HD): 30-perm heavy-duty, also the only facing in 8-foot widths
- WMP-50 (PSKP): Premium 50-perm with metalized backing for cold storage
Specialty Facings
- Foil-faced: Adds radiant barrier on top of fiberglass R-value
- Black-faced: Dark interior aesthetic for agricultural and low-glare commercial use
- Unfaced: No vapor barrier, for interior partitions and layered assemblies
For detailed facing selection guidance, see the facing comparison page.
Insulation Roll Pricing
Roll pricing is calculated per square foot regardless of roll dimensions. Lowest wholesale rates in the catalog:
- R-8 rolls: $0.48 / sq ft (cheapest)
- R-13 rolls: $0.65 / sq ft (standard 2x4 walls)
- R-19 rolls: $0.90 / sq ft (most-installed)
- R-25 rolls: $1.13 / sq ft
- R-30 rolls: $1.36 / sq ft (ceilings, attics)
Add freight ($395-$745 by state) and your offered service fee within the published acceptable range. Full pricing across every facing and R-value: insulation cost page.
Insulation Rolls FAQ
What are insulation rolls?
Insulation rolls are continuous lengths of fiberglass insulation packaged on a roll rather than in pre-cut batts. The installer cuts to length at the job site to match the actual cavity. Rolls are the dominant format for metal building, pole barn, and commercial insulation because they reduce seam count across large overhead and wall runs.
What widths do insulation rolls come in?
Standard widths are 4 feet, 5 feet, and 6 feet. WMP-30 is also available in 8-foot widths for commercial-scale projects. Custom 24-inch and 36-inch widths available with a cut charge.
How long are insulation rolls?
Roll length varies inversely with R-value. Lower R-values (R-8, R-10) run 50-100 feet per roll. Higher R-values (R-25, R-30) ship in shorter lengths (16-40 feet) because of the thicker profile.
How much does an insulation roll cover?
Coverage equals width times length. A 6-foot wide by 50-foot long roll covers 300 sq ft. Calculate total project square footage first, then divide by roll coverage to determine quantity.
What is the difference between rolls and batts?
Batts ship in pre-cut rectangular pieces (typically 48 inches long). Rolls ship in continuous lengths that the installer cuts to fit. Underlying fiberglass and R-value are identical; only package format differs. Rolls dominate metal building and pole barn applications; batts dominate residential framed walls.
Where do insulation rolls ship from?
Rolls ship directly from NAIMA-certified U.S. manufacturing facilities via LTL freight. The material does not sit in a warehouse or pass through a distributor — it goes straight from the production line to the job site, typically arriving in 7-14 business days.
Order Insulation Rolls Direct
Run your spec through the calculator to see wholesale roll pricing for your square footage and state. Material ships factory-direct on LTL freight.
Price Calculator
Select your facing, R-value, square footage, and delivery state to see wholesale pricing instantly.
Add accessories and offer the Service Fee amount to complete order.