Insulating for media room

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Forum topic by rkwoods posted 02-26-2014 02:33 PM 764 views 0 times favorited 3 replies Add to Favorites Watch
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21 posts in 1408 days

02-26-2014 02:33 PM

Topic tags/keywords: insulating sound proofing media

I’m putting a media room in my basement. Any suggestions on insulating and sound proofing the walls? I was out at my local Home Depot and saw a product called Homosote. Has anyone used this?

3 replies so far

View TheDane's profile


4939 posts in 3086 days

#1 posted 02-26-2014 03:04 PM

Norm Abram used Homasote to protect his work-benches when making through cuts, etc. It was also used in the ceiling of the New Yankee Workshop.

According to Homasote is described as being “lighter to hang than drywall and has some sound conditioning advantages. It is made of cellulose fibers (paper).”

You might check in at to see if anybody there has used it.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

View versa's profile


29 posts in 2556 days

#2 posted 03-07-2014 08:07 AM

For sound proofing the first thing you want to start with is air sealing the room. That is, make sure the sound does not have any open air pathways to leave the room, such as openings in the electrical boxes, lighting, windows, and doors. For the electrical they make special putty you can coat the outside of the box with to deaden it while air sealing it, as long as the walls are open, same with any can lights. Replace the interior door to the room with an exterior door with threshold to air seal the door.
Obviously you cannot seal your HVAC openings, but there are some things you can do to help in that area too. Sound deadening thin metal by coating it in mass loaded vinyl or replacing it with flexible insulated conduit, ideally with a couple of 90 degree turns in it.

You will get your most bang for the buck with the above suggestions, if you want to do more you can double drywall your walls and ceiling with green glue in between. You can also place an extra plywood subfloor and screw and glue it with green glue. If you want to go above and beyond you can make a room within a room and do all of the above but have the interior wall frames not share wall frames with the exterior walls. AKA leave a 1-6 inch gap in between the 2×4(or 2×6) for the interior room and any adjoining room’s framing. Stuffing insulation, either fiberglass or rockwool in any wall cavities will help to a small extent as well.

While you are doing this you might want to also consider designing your room with acoustics in mind, putting in first and second order absorbers and bass traps in the corners. Many people spend thousands on stereo equipment when 200-500$ spent on improving your room acoustics can improve your sound a lot more then a fancier receiver or speaker can.

As for homasote, I have never heard of it, googling it states “Homasote is a brand name associated with the product generically known as cellulose based fiber wall board, which is similar in composition to papier-mache, made from recycled paper that is compressed under high temperature and pressure and held together with a glue.” From that I gather it shouldn’t improve acoustics or sound proofing much more then regular gyspum board would, though it might be a slightly better insulator. I don’t think I would use it in a basement either, might absorb moisture and or become food for mold.

If you want additional information I would suggest visiting which has a forum for building dedicated home theaters from the ground up and a section on general media room designs.

View marcelmeister's profile


3 posts in 1119 days

#3 posted 03-07-2014 10:44 AM

As far as insulating and sound proofing are considered lot of sound proofing materials from wood to various polymers is put into use. In industries best used insulating material is glass wool and other insulating materials are also made us of. What about the electrical wiring and insulation part may be that is also equally important. Over current and surge protection are extremely important for proper functioning of electrical equipments giving an increased life span to your electrical and electronics equipments.

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