rockwool price / availability across regions

[gekljklefgje]

Rockwool is not available in any of my local stores (North TX). I can order it online from some stores by pallet (lowes.com, hometownbuildingcenters.com) but the price is quite high ($80+/bag for R15 2x4 )

I changed the zip code to some other regions and found out the availability / pricing is much better in some cases, available in store at ~$50/bag. Why is there such a big difference in rockwool pricing & availability? still a shortage / seasonal high demand in some regions?

 

[Just_Steve]

$ 58.98 a bag but no stock, lowes 10 miles away has it in stock, same price.

 

[Jmonnty]

R-15 Comfortbatt 3-1/2 in. x 15 in. x 47 in.​

$53 in stock in Lebanon, I bought 8 bags on 7/10

 

[gekljklefgje]

I wonder if the price around me would come down if I wait for a few months, right now it's almost 50% higher

 

[theoldwizard1]

I believe Rockwool is a brand name. I think the generic term in "mineral wool".

The stuff is great for sound deadening and is more fire retardant than other insulation, but inch for inch, it is no better than fiberglass.

 

[Walkers]

I believe Rockwool is a brand name. I think the generic term in "mineral wool".

The stuff is great for sound deadening and is more fire retardant than other insulation, but inch for inch, it is no better than fiberglass.

It is my understanding, having never used it myself, that it doesn't make you itch like fiberglass. If true this would make it very desirable, but I have never seen it for sale here in the southwest.

 

[72Anthony]

Have you tried a local lumberyard or building supply house?

I've purchased Mineral wool

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[frankd]

I believe Rockwool is a brand name. I think the generic term in "mineral wool".

The stuff is great for sound deadening and is more fire retardant than other insulation, but inch for inch, it is no better than fiberglass.

I'm pretty sure it actually does have a higher R-value that fiberglass. filling a 2x4 wall with rockwool will get you an R-value 15, whereas fiberglass is r-12.
$80 here on Long Island NY as well. I'm shocked at how expensive it is.

Other benefits are that it's better for soundproofing, doesn't make you itch, and it doesn't absorb water or encourage the growth of mildew.

 

[tjpavlov]

I think the biggest advantage of Rock wool is its density. You can almost carve it around obstructions. It may have a similar R value as fiberglass but I think it's way easier to get a great install with.

 

[budget76]

having renovated a house that had rockwool initially and I replaced/added a bunch of fiberglass, I can say 10000% the rockwool is MUCH nicer to work with. Even without the itchy factor, its just a superior product to cut/handle/form around obstructions etc.

 

[BombShelter]

Mineral Wool, Yes, much better R-factor, you can compress it and it won't lose it's R's, it doesn't get moldy if it gets wet and it doesn't need fastners, you push it into the spot and friction holds it. It's fire retardant and sound deadining.

I cut mine with a hacksaw blade, it's pretty easy, it still has some dust so I use goggles and a mask. I'm surprised they don't have it, check with the commercial building suppliers like White Cap

Search - White Cap

White Cap

www.whitecap.com

 

[wagoncrazy]

We installed Rockwool in our 3100 sq ft single story house 2 years ago (remodel down to the studs) and without a doubt...it's performed way better than fiberglass does. Our house stays cooler for longer in summer, and warmer for longer in winter.
My wife and I installed it all in a weekend, with just masks and goggles. I can't remember the exact count by it was probably 80 bags of it.
The vaulted cielings with their 2 x 12 rafters took 2 layers of the 5 1/2 inch thick stuff. That was the smartest thing (for keeping the cooling and heating bill down). I highly recommend getting it.

 

[Just_Steve]

Also unlike fiberglass rodents do not use Rockwool for nesting.

 

[Hobby_Man22]

I wonder if the price around me would come down if I wait for a few months, right now it's almost 50% higher

Holy ****. I could have swarn I bought r30 for $38.99 a bag a couple years back

 

[budget76]

Also unlike fiberglass rodents do not use Rockwool for nesting.

my 1950's rockwool-insulated house counters this statement. Ceilings had mouse signs all over when we ripped out the old ceiling/drywall etc. Had to replace some with fiberglass b/c it was the cheaper option at that time

 

[Hobby_Man22]

my 1950's rockwool-insulated house counters this statement. Ceilings had mouse signs all over when we ripped out the old ceiling/drywall etc. Had to replace some with fiberglass b/c it was the cheaper option at that time

I agree. Everytime i mow a field mouse makes his way in.

 

[mepstein]

I did my workshop in rockwool. I would do it again in a heartbeat. Even at the higher price, I would do it. I won’t touch fiberglass again.
Buy a large, non serrated knife from the dollar store. It’s the perfect rockwool cutting tool.

 

[Just_Steve]

my 1950's rockwool-insulated house counters this statement. Ceilings had mouse signs all over when we ripped out the old ceiling/drywall etc. Had to replace some with fiberglass b/c it was the cheaper option at that time

I stand corrected.

The below is directly from Rockwoll's official web site.

Are ROCKWOOL products rodent resistant?

There is no test method to determine whether or not any product is rodent resistant. ROCKWOOL’s reputation as a rodent-resistant insulation is mainly based on word of mouth and lack of negative feedback from numerous customers who use our products in “cottage country”. That being said, if a certain pest type is a nuisance to your particular area, best practice is to protect the insulation.

Never to old to learn.

 

[Imatk]

Yep rockwool is awesome. No ITCHY! And forms really well.

 

[GrayFlattop]

Johns Manville TempControl® R-15 Mineral Wool Insulation Batt 3-1/2" x 15-1/4" x 47"​

Menards - $30.60/bundle (after 11% rebate) - my local store has 128 bundles in stock.

 

[oldcarpenter]

An insulation contractor can usually install the product for the same cost that you would purchase materials, at least around here.

 

[BombShelter]

My shop walls are not covered and the critters do go after the RockWool, they tend to get a pile and then abandon the project.

 

[ducatithunder]

Best bet is likely big box stores like HD. When I did mine I ordered to get the bulk discount price. IIRC the bulk discount was more then 10 bails. This combined with the Military discount was roughly sub $23 a bail for R23 comfort batt. I would encourage you to buy to atleast get the bulk discount. If you end up returning the unused portion so be it.

 

[Hobby_Man22]

Best bet is likely big box stores like HD. When I did mine I ordered to get the bulk discount price. IIRC the bulk discount was more then 10 bails. This combined with the Military discount was roughly sub $23 a bail for R23 comfort batt. I would encourage you to buy to atleast get the bulk discount. If you end up returning the unused portion so be it.

That's what I did. You get 10 percent off

 

[Hobby_Man22]

I won't use rockwool anymore because it blocks the cell signal, but it has great sound blocking attributes which was what I was after. Could be a damn hurricane outside and you wouldn't know it.

 

[dogdog]

$80 per bag now wtf

ROCKWOOL R-15 Comfortbatt 3-1/2 in. x 15 in. x 47 in. Fire Resistant Stone Wool Insulation Batt (59.7 sq. ft.) RXCB351525 - The Home Depot

Protect outdoor walls, ceiling and floor frames by using this ComfortBatt Stone Wool Insulation from Roxul. Mold and water resistant.

www.homedepot.com

 

[finn]

$80 per bag now wtf

ROCKWOOL R-15 Comfortbatt 3-1/2 in. x 15 in. x 47 in. Fire Resistant Stone Wool Insulation Batt (59.7 sq. ft.) RXCB351525 - The Home Depot

Protect outdoor walls, ceiling and floor frames by using this ComfortBatt Stone Wool Insulation from Roxul. Mold and water resistant.

www.homedepot.com

Still $40.88 at Menards.

I don’t understand why people still shop at HD if they are in a Menards service area.