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Product selection from JOHNS MANVILLE

Johns Manville R31 42.66-Sq. Ft Unfaced Fibreglass Batt Insulation

Article #34815009 Model #90003758 Format 16x48x9.5"
This item is not currently available for immediate purchase, but can be ordered by visiting the selected store.
The earliest delivery date displayed is only an estimate. The actual delivery date may change based on availability of products, or due to other circumstances beyond our control. Appliance delivery date can be selected in the checkout. If there is no option to schedule your appliance delivery, our team will contact you to schedule a delivery within 24 hours. Learn More.
All express deliveries are delivered by our 3rd party partner ToolBX Inc. Only available for select in-store items in sufficient stock at the participating selected store. Delivery address must be within delivery zone of the selected participating store. Weight limit of 1,475 Kg (3,250 lbs) per order. Service must be requested before 2 p.m. on weekdays and before noon on Saturdays (local time) to get your order on the same day. After these times you'll get your order on the next available delivery day. Not available on national/provincial holidays. Service may not be available due notably high in-store traffic, bad weather conditions or any other situation affecting the availability of the service. See all details.
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Our expert center will contact you to schedule a delivery within 24 hours. The delay for delivery is an estimate and may vary according to the availability of products, or due to other circumstances beyond our control. Delivery prices only include curbside delivery, except for appliances. Delivery service is only available within a 50 km radius from the selected store (75 km for RONA+ stores). Additional charges may apply for installation. We will not leave deliveries at an unattended site – note that additional delivery charges may apply for subsequent delivery attempts. See all details.
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Description

This Johns Manville insulation was created for walls and attics to improve energy and acoustic efficiency. You will appreciate the flexible material made of fibreglass without formaldehyde and resistant to fire and mildew. Up to 42.66 sq. ft. 9.5 x 16 x 48 in. R31. Fibreglass.
  • Lightweight, thermal and acoustical fiber glass insulation
  • Designed for steel framing
  • Convenient length for installation and transport
ECOLOGO 

Ecological Attributes

This insulating product is certified ECOLOGO®. It emits fewer VOCs and formaldehyde for better air quality, reduces heat loss for energy savings, and is made from at least 45% of recycled materials to reduce the use of raw materials.

Product specifications

Coverage Area(ft2)
42.66
Coverage Area(m2)
3.963114
Length(cm)
121.92
Length(in)
48
Length(mm)
1219.2
Thickness(cm)
24.13
Thickness(in)
9.5
Thickness(mm)
241.3
Width(cm)
40.64
Width(in)
16
Width(mm)
406.4

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Could this insulation be used on top of spray foam insulation in an attic to increase the total R value?

Asked by: Little tuna
Yes I believe so.
Answered by: PMJ1
Date published: 2022-11-25

Description says designed for steel framing, can this be used with wood framing as well?

Asked by: shanelbow
This insulation is ideal for insulating between ceiling joists, but too thick for 2x4 wall insulation. It worked well for the ceiling application.
Answered by: PMJ1
Date published: 2021-11-30

I have an unusual 4.5" deep space to insulate. At 9.5" this insulation is perfect if split to half thickness. How easy is it to split this insulation to half thickness?

Asked by: Colt
It would have to be torn in half, it is not able to be cut the way you need. You would not be able to get a uniform thickness. Better off to find the thickness you need or go with blown in insulation. Just my opinion.
Answered by: Handyman 53
Date published: 2021-04-03

Would this be any good for the ceiling of a crawl space? I ask because it does say designed for steel framing.

Asked by: NDSeed
I've used it for that with wood framing; it just means you have to push it in a little more because wood frame 16" will only have 14.5" between the studs, but frankly I'd rather have the R31 than R20ish which is the best I've ever seen for wood frame 16".
Answered by: DrRTFM666
Date published: 2021-02-22

the attic area I am going to insulate is 122 sq ft how many bundles of johns Manville R-41 fiberglass attic insulation will I need? Is there basic instructions with material.

Asked by: JAllison
122sq/ft devided by 42.66 sq/ft per bundle = 2.8 or 3 bundles
Answered by: Mjrb
Date published: 2021-11-05

So can this be used on 2 x 10's with 16" oc wood frame?

Asked by: Kevin12345
Yep.
Answered by: Booyah
Date published: 2019-07-20

can i use this in a 2x4 studs for attached garage?

Asked by: donnkris
No, the insulation is like 11 or 12 inches thick when it expands, so to compress into a 2x4 stud wall makes no sense.
Answered by: Garsan
Date published: 2018-07-06

it states that it is designed for steel studs, but can it be used with wood? I need R30 for ceiling with no attic in my area, so this would be perfect for me if so

Asked by: INeedANickName
Batt insulation can be used with both steel and wood framing. Batts made for steel framing are usually slighty wider though, so measure the width between your rafters to make sure you buy the correct width. Too wide and it won't fit in well, too narrow and the batts won't stay in place and you'll have incomplete coverage. Both will reduce the effectiveness of the insulation in your ceiling. Aside from the above, spray foam insulation is a far better option for cathedral ceilings. Not only because it'l yields a higher R-value, but also because it will result in an air tight barrier that will keep more heat in, and more importantly also prevent air from bypassing your insulation which can lead to moisture and mold issues. If using batt insulation in a cathedral ceilings, ensure that the air and vapour barrier is given a lot of attention and detail, especially around lights and other electrical devices.
Answered by: Energy_guy
Date published: 2019-04-17
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Johns Manville R31 42.66-Sq. Ft Unfaced Fibreglass Batt Insulation is rated 4.0 out of 5 by 5.
Rated 5 out of 5 by from Quick Turnaround Ordered product mid-day and received a notification it was ready for pickup about 2 hours later. Wasn't expecting that. I was quite pleased to say the least.
Date published: 2021-06-01
Rated 5 out of 5 by from does the job I used this insulation batt on my cold room ceiling, easy to work with and the cold room felt warm now, don't know how warm during coldest months. Let wait and see.
Date published: 2020-11-05
Rated 5 out of 5 by from R31 insulation Perfect insulation for my basement ceiling. Could not find easily elsewhere. Delivered in good shape and installed easily. Very happy with this purchase.
Date published: 2020-10-25
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