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R-13 Fiberglass Insulation โ€” Wholesale Supply

The most widely used batt for 2ร—4 wall framing. Wholesale pricing, no minimum order, same-day quotes, next-day delivery anywhere in the U.S.

No minimum ยท Next-day delivery ยท Pay at delivery ยท All 50 states

R-13 Standard Fiberglass Batts

R-Value
13
Application
2ร—4 Walls
Widths Available
15" ยท 23"
Thickness
3.5"
Coverage / Bag
~40โ€“65 sq ft
Facing
Kraft or Unfaced

The standard for 2ร—4 framed walls nationwide.

01

Perfect fit for 2ร—4 cavities

At 3.5" thick, R-13 is engineered to fill a standard 2ร—4 stud bay completely โ€” no gaps, no compression. It's the most popular batt sold in the U.S. for a reason.

02

Interior walls and retrofit

Beyond exterior walls, R-13 is ideal for interior partition walls where sound control matters โ€” bedrooms, bathrooms, media rooms. Also used in retrofit projects where 2ร—4 framing is already in place.

03

Highest volume product

Because it's the most widely used batt in residential construction, we keep deep stock of R-13. Short-lead orders and volume pricing are both available โ€” call to discuss your project.

Order R-13 in three steps.

01

Call or text your list

Tell us: R-13, batt width (15" or 23"), quantity, zip code, and delivery date. We respond same business day.

02

Receive a firm invoice

We confirm stock and send an itemized invoice with your exact delivery window โ€” no guessing.

03

Delivered โ€” then you pay

Delivery next business day on stocked product. Verify the order, then pay at delivery. No upfront required.

Common questions about R-13.

Can R-13 be used in climate zones 4โ€“8?

For above-grade walls in cold climates, codes typically require R-20 or higher โ€” which means R-13 alone doesn't satisfy code for exterior walls in zones 4+. However, R-13 can be used as part of a continuous insulation assembly, or for interior partition walls, in any climate zone.

What's the difference between R-13 and R-15?

R-15 is the high-density version for 2ร—4 cavities โ€” same thickness, higher density, better thermal performance. Both fit the same framing. If your spec or code requires R-15, ask about it when you call.

Do you have kraft-faced and unfaced versions?

Yes. Kraft-faced is for exterior walls and basement walls. Unfaced is for interior walls, retrofit, and double-layer attic applications. Specify when you call.

Is there a minimum order?

No minimum. You can order a few bags or a few pallets. Volume earns better pricing โ€” ask about it.

Ready to order R-13?

Call or text with your quantity, width, and zip code. Same-day quote, next-day delivery. Pay at delivery.

Ready? R-13 Fiberglass Insulation โ€” Wholesale Supply

Leave your number and what you need โ€” we text or call you back with a quote the same day.

Or reach us directly: (929) 466-1426 ยท Text us