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ROXUL
ROXUL Mineral Wool High Temperature Insulation, 1 in x 48 in x 24 in

ROXUL Mineral Wool High Temperature Insulation, 1 in x 48 in x 24 in

4.7(25 ratings)

Last price we saw

$132.90at Zoro, last seen Nov 7

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Our take on the ROXUL Mineral Wool High Temperature Insulation, 1 in x 48 in x 24 in

ROXUL mineral wool board is a rigid, non-combustible insulation panel rated for high-temperature use, sold here in a 1 in x 48 in x 24 in size. Its 8 lb/cu ft density gives it an R-value of about 4 at 1 inch, so it is a heat barrier and firestop material rather than a wall-cavity insulator. It does not absorb moisture and holds up where fiberglass would melt or sag. Shoppers rate it 4.7 out of 5 from 25 ratings.

Best forStove, fireplace and chimney clearancesFirestopping around pipes and penetrationsGarage, shop and furnace-room heat shieldingSound damping in stud bays and around equipment
Pros
  • Non-combustible mineral wool rated for high temperatures
  • Rigid 8 lb/cu ft board cuts cleanly and holds its shape
  • Will not absorb moisture or rot
  • Dampens sound better than light fiberglass batts
  • Stable at 1 in thickness for tight clearances
Cons
  • R-value of only about 4 per inch, low for thermal insulation
  • Rigid board is pricier per square foot than fiberglass batts
  • Minerals and dust irritate skin and lungs during cutting
  • Heavy and crumbly at the edges, so it needs careful handling

ROXUL Mineral Wool High Temperature Insulation, 1 in x 48 in x 24 in prices at every store

  • ZoroCheck price at Zoro

ROXUL Mineral Wool High Temperature Insulation, 1 in x 48 in x 24 in price history

Lowest price we've seen: $132.90 on Nov 7 at Zoro. Tracked across 1 store since Nov 7.

What reviewers say

  • 4.7 / 525 ratings

Buyers rate it highly and mostly use it for heat shielding and firestopping, where its rigidity and temperature rating matter. Complaints center on itchiness and dust while cutting and on the low R-value for the price.

What people mention
  • Heat resistancePraisedOwners say it takes stove and flue temperatures without melting, smoking or breaking down.
  • RigidityPraisedThe dense board stays put in vertical and overhead applications where batts sag.
  • IrritationCriticisedHandlers report itching skin and dust, so gloves, sleeves and a mask are needed.
  • R-valueMixedAt about R-4 per inch it blocks heat and fire well but insulates less than thicker batts.
  • ValueCriticisedSome buyers find it expensive per square foot compared with fiberglass.

Specifications

Density
8 lb/cu ft
Thickness
1 in
Moisture Absorption
No
Approx. R Value
4
Length
48 in

Questions and answers

What is this ROXUL board used for?
It is a non-combustible mineral wool board for high-temperature shielding and firestopping: stove and chimney clearances, pipe penetrations, furnace rooms and sound damping. It is not meant as a primary wall insulator.
What R-value does 1 inch give?
About R-4. That is low for thermal insulation, so use it for heat and fire protection or add thickness where you need real R-value.
Can it get wet?
It does not absorb moisture and resists rot, but keep it dry during storage and install so it performs as intended.
How do I cut it?
A serrated knife or insulation saw cuts the 1 in board cleanly. Wear gloves, long sleeves and a dust mask, and clean up crumbs afterward.
Is it safe around a wood stove?
Mineral wool is non-combustible and widely used for stove and flue shielding, but clearances must follow the stove maker's instructions and local code.
How many pieces come in the 48 in x 24 in size?
Each panel measures 1 in x 48 in x 24 in, or 8 square feet. Check the listing quantity if you need to cover a larger area.
What do buyers say about the ROXUL Mineral Wool High Temperature Insulation, 1 in x 48 in x 24 in?
Rated 4.7 out of 5 from 25 ratings.

Stores we've priced the ROXUL Mineral Wool High Temperature Insulation, 1 in x 48 in x 24 in at

  • Zoro deals and prices