Roxul / Guides

Insulating a Slab on grade for a Passive Solar LEED Home with Rockwool © Ecohome
Insulation and soundproofing

Insulating below slab-on-grade floors

...Roxul / Rockwool . See other slab on grade information pages here: The Definitive Slab-on-grade Technical Guide How to build a slab-on-grade foundation with thickened edge for normal soil conditions Slab on Grade insulated prefabricated ICF form kits, how to build them, what are the advantages?

Mineral wool insulation in roof by Rockwool - LEED Platinum V4
Roof assemblies - new construction

Mineral wool insulation in roofs by Rockwool

Mineral wool roof insulation used to best effect: Watch more Green Building Video Guides on the EcoHome YouTube Channel here The Ecohome's Edelweiss House LEED Platinum certified V4 roof is a 2/12 pitch insulated to R95 with Rockwool (formerly Roxul) mineral wool batts. R95 far exceeds the most rigorous Canadian...

Building science for LEED v4 wall design made easy
Concept and design

Building science for LEED v4 wall design made easy - video

...Roxul ComfortBoard IS instead of polystyrene rigid insulation (EPS or XPS - see comparisons here) . We chose this option for a variety of reasons. Roxul has high embodied energy, but the final product is effectively inert, with characteristics that will remain unchanged with the passing of time. This is not the case ...

Off grid, passively heated and cooled house in the Gatineau Hills, Que
Off-grid and Net-Zero Housing

Off grid living blog, part 2: passively heated, this house in Quebec aims for LEED certification

...Roxul mineral wool batts and cellulose totalling R80, the basement is a mix of EPS foam and Roxul batts totalling R28. The benefits of a double exterior wall are plenty. It eliminates thermal bridging through studs, provides lots of room for insulation, and the air/vapour barrier is sandwiched between walls where it ...

Slab-on-grade for Ecohome's upcoming video building guide
Slab on Grade

how to build a slab-on-grade on standard soil

...Roxul) . Note: Engineers at Rockwool could not confirm with us that their product had the compressive strength to carry the load under the footing, so where the weight of the walls would bear, we installed EPS foam. Slab floors are often built in a way that requires footings and sometimes frost walls to be poured f...

Correctly installed Triple pane south facing windows on Ecohome's Demo House
Windows and doors

Installing doors & windows for the best performance in high efficiency homes, LEED & Passive House

...Roxul Comfortboard) makes leveling and placing windows quite easy. It is somewhat compressible and it holds its R value when compressed, and it isn't harmed by moisture the way fiberglass insulation can be. Create a durable air seal: low-expanding spray foam is commonly used around windows, which works fine for its i...

How to insulate basements properly
Insulation and soundproofing

Best practices for basement insulation in new home construction

...Roxul mineral wool exterior foundation insulation © Roxul Exterior EPS or mineral wool: Neither are harmed by moisture. With care they can be largely held in place against exterior walls with backfilling below grade, and fixed above grade with fiber cement board attached through to foundation walls. Drainag...

Passively-heated off-grid LEED house in Low, Quebec
Off-grid and Net-Zero Housing

Off-grid living blog: a firsthand account of building and living in a remote area

...Roxul batts. Finally, a standard layer of sheetrock covers the interior walls. A big advantage of the utility wall is that all of the openings that need to be cut for outlets, fixtures, etc., don't puncture the air barrier. Outside of the 2x8 wall there is a layer of plywood, then 1.5" of Roxul ComfortBoard, which is...

Rendering of the Ecohome demonstration house
Efficient home design

Ecohome Demo House: High performance, affordable cost

...Roxul mineral wool insulation, which has a high embodied energy but superior durability compared to many other insulation materials. It can also be easily disassembled and entirely reusable at the end of the operational life of this home, whenever or if that may come. Compact Home design The full footprint of 1,552...

Slab on grade or a foundation and basement?
Foundation choices

Slab-on-grade vs foundation and crawlspace or basement

...Roxul mineral wool below a concrete slab floor Follow the advice in THE ECOHOME A TO Z SLAB BUILDING GUIDE Further reading for Slab on Grade or basement construction: How to choose between a crawlspace or a slab foundation ? - Ecohome Guide Best practices for basement construction - Ecohome Guide How much...

Installing foam panel insulation, which is best?
Insulation and soundproofing

Rigid insulation panels: which ones to use for different applications

...Roxul Like any particulate, it is best not to inhale the fibers while installing rock wool insulation board, so like any batt insulation we recommend using eye protection and a mask, not to mention gloves to prevent skin irritation. As an insulation it is non-toxic, and unlike foam products there are no blowing a...