Soundproofing Drain Pipes

Acoustic Challenge

Drain pipes inside your walls carry water from kitchens, bathrooms and laundry rooms.    As the water flow navigates through the pipe system, pressures surface that force noise to break out through the walls of the pipes and transmit into the rooms of your home.   Your goal is to contain the noise to within the loud drain pipes and protect your home from any noisy plumbing fixtures.

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Soundproofing Treatment
 

If you have access to the loud pipes, simply wrap them with our NetLag sound pipe insulation lagging material featured in the Product Bin.   If you do not have access to the pipes, consider treating the finished wall for transmission loss as outlined in our Walls section of this Applications Guide.   

Acoustic Results

Wrapping noisy drain pipes with the NetLag sound barrier material featured in our
Product Bin can trigger average 10-12 dB drops.   Simulated results for soundproofing
noisy pipes are broadcast in our Sound Chamber.   Treating the finished wall with
dB-Bloc and a proper framing treating can trigger comparable results depending on
leakage and framing techniques for better residential sound control.

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Start Smart:     Good Decision Making Will Save You Money

Making good decisions will save you time and money.   Nothing is more costly or pocketbook-draining than to discover that the wrong product, the wrong treatment, or the mis-installation of your order forces you to start over,  accept inferior results, or suffer from buyer's remorse.

To help avoid missteps and protect your investment, NetWell Noise Control
offers its famous, safe, and secure email course called StartSmart.   It is filled with valuable insider tips on saving money with your soundproofing treatment.   This popular teaching tool is your guide to a successful
soundproofing outcome.   The eCourse is free, and enjoyed by more than
90% of all new customers.

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Isolate all pipes from framing and drywall with resilient mounts or hangers to create dead air chambers.   Then wrap NetLag around your pipes and apply your sheetrock.   If any of these walls are to be insulated for temperature control, stuff the walls full of fiberglass batting insulation.   Note that this batting material isn't dense, it won't block noise from bleeding through it, but it is a good thermal insulator depending on which wall you are treating.   NetLag will hold the sound of the noise banging through the pipes inside and not let it spill out into the room.

Heavier cast iron water lines will hold more noise in than will PVC pipes if you have the option.    Also if you can, opt for larger diameter supply and drain pipes to minimize the constriction of liquid flow and the noise that would come with it.

If you don't have access to your pipes, line the chase walls with dB-Bloc, add a layer of firring strips or resilient channels, and put up a new finished layer of drywall.   This treatment is outlined in our Walls section, and will serve to combat any noise source from attempting to bleed through the wall.   Here you are treating the wall, not the pipes, for stopping the bleed.