Acoustical Putty Pads
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Acoustical Putty Pads

Acoustical Outlet Backer Putty Pad for Soundproofing Walls. These pads are easily applied over standard outlet boxes for a secure acoustical seal.
7" x 7.25" x 1/8" thick, with Intumescent Fire Stopping Properties, for safety.

PRICED PER PIECE. Quantity Discounts begin at 20 pieces, see below.

Price: $5.99
Made in USA
Fast turnaround
Quantity Price
20-99 Items $5.49
100-499 Items $4.99
500+ Items $4.49

Note: you must order at least 5 items

Acoustical Pads are designed for those who seek perfection in their soundproofing project. Electrical outlet boxes are a commonly overlooked area, and if not properly secured, soundwaves can easily penetrate the boxes and drastically compromise the soundproof properties of the wall. These pads are molded around the boxes to ensure your wall retains its proper STC performance.

Putty pads are UL fire rate and can be used in fire rated walls. The intumescent fire stop properties which will prevent the spread of fire, up to 2 hours. See Technical Data Sheet for more details.

Pads dimensions are 7" x 7.25" x 1/8" and are peel and stick. Simply peel the paper off the pads and attach around the outlet, cutting where necessary to allow for wire penetrations.

Product Features:

  • Non-Curing
  • Applied by hand
  • 2 hour fire rating
  • 49 STC Rating
  • Red Color
  • No Asbestos fillers
  • Long Shelf Life

Material Properties

  • Color: Red
  • Physical State: Tacky Putty
  • Flame Spread: 5
  • Smoke Development: 15
  • Intumescent Activation: 220° F
  • STC Rating: 49*
  • Cure Time: Non-Curing.
  • Odor: Odorless
  • Shelf Life: 24 months
  • Specific Gravity: 1.48 g/cc
  • Application Method: By Hand
    (*Tested in a UL 411 wall assembly/section to ASTM E90)


  • Do not expose to water
  • Do not use where abrasion or physical tampering may be anticipated

How to Order:

Putty Pads are priced per piece, select quantity required above. Quantity Discounts apply when ordering 20 pieces.

Please note, images are for illustrative purposes only. Actual colors may vary slightly and size may be enlarged to show detail.

Acoustical Putty Pads are great for applications under Mass Loaded Vinyl sheets. To view more soundproofing products, see our Soundproofing Accessories page or our Soundproofing Homepage.

Application Procedures

  1. Remove product label from one side of pad. Align the side of the pad with the electrical box partially overlapping the stud and adhere.

  2. If the gypsum wallboard is already in place, pack putty into gaps between the electrical box and gypsum wall slightly overlapping the inner wallboard surface. If the wallboard is to be installed after the putty installation, overlap the front edge of the electrical box so that the putty pad will be compressed around the edges of the box as the wallboard is installed. Where cables or conduit are encountered, cut slits in the pad to fit around the obstructions.

  3. Press pad firmly to surface of top, bottom, and sides of the electrical box.

  4. Trim excess putty and apply to conduit fittings connected to box. Remove the exposed label. Putty may also be packed inside of conduit fittings to restrict the passage of smoke.

Shipping and Return information is specific to this product page only (not for other products on our site).

  • Material is in stock and ships the same day from our East or West coast facility.
  • Free Shipping on orders over $75.00. There will be a $14.99 Shipping and Handling flat fee on orders under $75.00 - Applies to orders shipping in the USA (Excluding Alaska & Hawaii).
  • Ships FedEx Ground.
  • Overnight and Express shipping is available. Please call us at 845-388-1200.
  • Shipping Time varies. For more information see our Shipping Information page. 


  • Product can be returned up to 60 days, if in brand new condition.
  • Please call or email us to receive an RMA number before returning. No returns will be processed without an RMA number.
  • We will deduct $10.00 per case on all returns to cover our original shipping cost.
  • Return shipping is customer's responsibility. Return address wil be provided along with RMA number.
  • If you are shipping via USPS (not recommended) do NOT require signature as we will not be able to pick up your package from local post office facility.
  • Click here for more information on our Return Policy.


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Product reviews are only available to verified buyers of this product. To leave a review, please refer to the product review email we sent you.
  • Effective (2)
  • Work Better Than Expected (1)
  • Eliminates Flutter Echoes (1)
  • Absorbs Standing Waves (1)
  • Heavy duty (1)
  • None (1)
best uses
  • Any Project (1)
  • Pro Audio / DJ / Mixing (1)
  • Home Studio (1)
  • Amateur Recording (1)

Reviewed by 2 customers

Displaying reviews 1-2

By peace

from New york

Verified buyer
They do exactly what they are supposed to
  • Effective
  • Heavy duty
best uses
  • Amateur Recording
  • Home Studio
  • Pro Audio / DJ / Mixing
Comments about Acoustical Putty Pads:
To seal off the back of outlets and other perforations
Bottom Line Yes, I would recommend this to a friend

By Stu-P-Ditty

from Hinesburg VT

About Me Do It Yourselfer

Verified buyer
Acoustical Putty Pads
  • Absorbs Standing Waves
  • Effective
  • Eliminates Flutter Echoes
  • Work Better Than Expected
  • None
best uses
  • Any Project
Comments about Acoustical Putty Pads:
The product worked better than I expected. I used them around electrical boxes and I was able to cut down and cover more than one electrical box per putty pad
Bottom Line Yes, I would recommend this to a friend
Displaying reviews 1-2

Customers Questions and Answers

1) robert oconnor: Hi, can I use ths product on HVAC duct end fittings that are attached to flexduct?

Trademark Soundproofing Reply:

Yes. It can be used there.

2) Philip B: Pads- Can this product be used over high hat lights in the ceiling ? My concern would be the heat accumulation. Thanks !

Trademark Soundproofing Reply:

It seals it up well so if heat accumulation is a concern this would not be the product you are looking for. Take a look at our recessed light cover for soundproofing.

3) Kyler G: Would this be suitable for a circuit board? It would probably need 4 of them

Trademark Soundproofing Reply: Yes. You can put a few of them together overlapping each other at the edges.

4) Ariosto A: What is the weight of every putty pad? Thank you.

Trademark Soundproofing Reply: 6.24 Ounce (.39 of a pound)

5) Kathryn: Can acoustical putty pads be used on the outer side of airtight recessed lighting trim (like these: Airtight Recessed Baffle Trim, I need to decrease sound transmission from a finished basement to the main floor. THe basement has about six can lights in the living room.

Trademark Soundproofing Reply: Yes it can be used on the outer side of these (but not on the top where it blocks the airflow).