Rockwool Foil Faced CurtainRock 40, 3 in

Last price we saw

$133.64at Arbor, last seen Nov 7

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Our take on the Rockwool Foil Faced CurtainRock 40, 3 in

Rockwool CurtainRock 40 is a rigid stone wool board with reinforced foil facings, made for commercial curtain wall insulation. It combines thermal and acoustic control in one board, with an R-value of about 4.3 per inch and a melting point near 2,150°F. Boards measure 24 x 48 inches and come 40 sq ft per pack. It is a commercial-grade product, not a DIY retrofit board, and is installed by mechanical fastening behind exterior wall systems.

Best forCommercial curtain wall projectsArchitects specifying exterior wall insulationBuildings that need thermal and acoustic control togetherSpecifiers who want a non-combustible stone wool core

Pros

Stone wool core is chemically inert and non-combustible
R-4.3 per inch gives solid thermal performance for the thickness
Sound absorbent, so it handles acoustics as well as heat
Reinforced foil facings suit curtain wall cavities
Passed fungi resistance testing
Service temperature far above typical building use

Rockwool Foil Faced CurtainRock 40, 3 in prices at every store

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Rockwool Foil Faced CurtainRock 40, 3 in price history

Lowest price we've seen: $133.64 on Nov 7 at Arbor. Tracked across 1 store since Nov 7.

Specifications

Form: Board
Product Type: Rigid Foam Board
Insulation Type: Thermal, Acoustic
Insulated Plasterboard: No
Material Type: Stone wool
Facing: Reinforced foil facings
Material Composition

Questions and answers

What is CurtainRock 40 used for?: It insulates commercial curtain wall systems, fitting between the exterior cladding and the interior structure. The stone wool core handles thermal and acoustic control, and the foil facings add a radiant barrier.
What R-value does the 3 in board give?: At about 4.3 per inch, a 3 in board is roughly R-13. Check the labeled R-value on the pack, since thickness and density affect the final number.
Is it fire rated?: The stone wool core is non-combustible, with a melting point around 2,150°F. The full assembly rating depends on the wall system and how the boards are installed, so confirm with the system's listing.
How much area does a pack cover?: Each pack covers 40 sq ft. Boards are 24 x 48 inches, so a pack holds about five boards.
Can I use it in a house?: It is designed for commercial curtain wall cavities and mechanical fastening. For a home, standard stone wool batts are usually cheaper and easier to fit.
Does it need a vapor barrier?: The foil facing acts as a vapor retarder when joints are sealed. The wall assembly still needs a properly detailed air and water barrier behind it.

Stores we've priced the Rockwool Foil Faced CurtainRock 40, 3 in at

Arbor deals and prices

More from ROCKWOOL

Our take on the Rockwool Foil Faced CurtainRock 40, 3 in

Best forCommercial curtain wall projectsArchitects specifying exterior wall insulationBuildings that need thermal and acoustic control togetherSpecifiers who want a non-combustible stone wool core

Pros

Stone wool core is chemically inert and non-combustible
R-4.3 per inch gives solid thermal performance for the thickness
Sound absorbent, so it handles acoustics as well as heat
Reinforced foil facings suit curtain wall cavities
Passed fungi resistance testing
Service temperature far above typical building use

Questions and answers

What is CurtainRock 40 used for?

It insulates commercial curtain wall systems, fitting between the exterior cladding and the interior structure. The stone wool core handles thermal and acoustic control, and the foil facings add a radiant barrier.

What R-value does the 3 in board give?

At about 4.3 per inch, a 3 in board is roughly R-13. Check the labeled R-value on the pack, since thickness and density affect the final number.

Is it fire rated?

The stone wool core is non-combustible, with a melting point around 2,150°F. The full assembly rating depends on the wall system and how the boards are installed, so confirm with the system's listing.

How much area does a pack cover?

Each pack covers 40 sq ft. Boards are 24 x 48 inches, so a pack holds about five boards.

Can I use it in a house?

It is designed for commercial curtain wall cavities and mechanical fastening. For a home, standard stone wool batts are usually cheaper and easier to fit.

Does it need a vapor barrier?

The foil facing acts as a vapor retarder when joints are sealed. The wall assembly still needs a properly detailed air and water barrier behind it.