A lot of us have been there… You just bought a home and you can hear the sound of the toilet inside of your powder room. Or your son has been begging to get the basement room prepared so he can play the drum set with his classmates for the talent show. Fear not, I really do think the Roxul Safe & Sound is a very good solution. This post will guide you through what the product is, how it works and where I recommend using it– to make the most out of your privacy within your living spaces.

Fire & Sound Proof Insulation

Roxul Safe&Sound is a stone wool based batt insulation by Roxul. Perfect for wood and steel construction here in Canada, it is a non-combustible product that can tolerate up to 117 degrees Celsius. In addition, it does not produce any toxic byproduct or fuel fires- even with direct heat applied. This product is then able to provide a superior sound dampening property and is able to fit in between studs/joists on walls, in between floor joists and ceilings.


Roxul Safe and Sound Application 1: Around Bathrooms

This would be the most obvious solution for you to sound proof your bathroom. What I have done on past projects is place the safe and sound in between the joist cavity before applying the drywall/tiles. In addition, I like to apply it around any plumbing pipe/stacks in the area is I have found it does a very good job at keeping the noise out. This avoids privacy issues when guests visit as well as removes any water/plumbing noises from that loud Geberit tank you just bought! In our Nocturne project this seemed to work well even with drywall and wallpaper

roxul safe and sound in bathroom
Roxul safe and sound in bathroom around toilet

Can you also apply it on ceiling joist-spaces? Absolutely! Especially around ceiling fans– as I have only encountered one (Panasonic’s whisper Quiet) that does a good job of muffling the noise.


Application 2: Theatre/Recreational room

This application was probably the most time consuming because its something we had to be very careful with. On our Mississauga Rd project, we actually had the insulation company spray only the exterior walls/areas with the 2 lb closed cell spray foam as agreed with the architect and with the required R-value set by the City of Mississauga (In this case it was R-22 foam on the rim joist and R-20 foam on the exterior walls). Even with the upgrade in spray insulation, however, we knew this wasn’t enough as the client wanted to turn this space into a Theatre room. The solution? R-40 Roxul Safe and Sound! We started by topping up the the joist spaces with the safe and sound as well as the interior walls so it would encompass the whole area.

Roxul Safe and Sound in a theatre
Worker installing Roxul Safe and Sound in theatre

Once this was completed we looked at filling in the spaces around the return and supply ducts as well to maximize the acoustic absorption. Before we knew it, we were ready to slap on the drywall to the furring channel and we knew the client would be happy!

Roxul Safe and Sound Application 3: Around Elevator pits & Stairs

Now I know what you’re thinking– how on earth am I supposed to do this? I have no elevator and its too late for stairs! No worries! This is for your next big house/project 🙂

Now the building code requirements are vey strict on elevator safety with regards to the right track support as well as fire safety in the hoistway. They care little, though, about noise.. That’s okay though, as thats why us contractors are here! What we did was prepared the joist cavities with roxul safe and sound! We were then ready to strap the hoist-way with the correct fire-rated plywood. This enabled a good amount of sound dampening on our project as well as a significant amount of protection against any fire hazard.

Roxul Safe and Sound around elevator hoistway
Roxul safe and sound in elevator
Roxul safe and sound in elevator

With Staircases, there’s no real requirement as ours was within an interior living space. Nobody, however, likes to hear loud steps on the other side or directly underneath the treads. For this we simply placed the safe and sound within the cavity space as well as on the underside of the stairs (on the main floor and basement) to very good effect. Now its impossible to dampen out the sound of slippers or feet hitting each step. However, it does reduce the vibration and protects the inside wall.

roxul safe and sound on stairs
Roxul Safe and Sound on stairs

Roxul Safe and Sound application 4: To provide an adequate fire block

People will look past this point as they don’t find it important but City Inspectors will absolutely make sure you do this.

The point is simple: Wherever a vertical wall meets a horizontal space– you have to have a fire blockIt can be plywood or in this case insulation! This makes sure that the fire does not travel up and across into another room- making sure you are well protected!

roxul safe and sound fireblock

Fire-stop needed at the point the 2 arrows meet- the horizontal cavity meeting the vertical space

Additional areas

Now we can go on and on as to which areas we recommend installing this product but here are a few more (NOT IN ANY PARTICULAR ORDER)

Our consensus

In conclusion, the Roxul Safe and Sound is a product that very worth every penny. It provides an excellent insulation value as well as protection against fire and a reasonable amount of noise. As always, I recommend you do your own research before purchasing the product and where you believe it should be applied.

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