Illustrative mockup. Final packaging may vary.

Sound Wall Compliance Pack

A case of acoustical sealant and a case of fire rated putty pads in one shipment: the two products the code's penetration sealing rule asks for on walls between dwelling units.

IBC Sound Transmission ASTM C919 ASTM E90

Who this is for

General contractors on small multifamily jobs: 4 to 40 unit buildings, conversions, and ADUs
Hotel and senior living renovation teams reworking walls between rooms
Owner builders who need the finished wall to pass a field sound test

What's included

One case of Everkem Sound Seal 90 acoustical sealant (16 x 20 oz tubes)
One case of Everkem fire rated intumescent putty pads (20 pads, 7" x 7")
Pre drywall sealing checklist and product data sheets
Covers the shared walls of roughly 2 to 4 typical units

Why these two together: the building code requires walls between dwelling units to hold their sound rating at every penetration, and the published failure data points at two details. USG's test data shows a wall built to STC 53 testing at 29 when the perimeter is left unsealed, and Canada's National Research Council measured up to 6 STC points lost to bare back to back outlet boxes. The sealant closes the first leak, the pads close the second. The full story is in our STC 50 wall assembly guide.

Both products are made in the USA by Everkem. Sound Seal 90 is for sound and smoke sealing in non fire rated assemblies; joints in fire rated assemblies need a listed firestop system. Review your wall types before ordering.

Frequently Asked Questions

How many units does one pack cover?

The sealant case covers roughly 980 linear feet at a 1/4 inch bead or 435 linear feet at 3/8 inch, and the pad case treats 20 electrical boxes. For typical unit layouts that works out to the shared walls of roughly 2 to 4 units. Larger projects usually move to additional cases or 5 gallon pails.

Why these two products together?

The code requires sound rated walls to be sealed at penetrations, and the two documented failure points are unsealed perimeter joints and bare electrical boxes. Acoustic consultants' pre drywall checklists pair acoustical sealant and putty pads for exactly that reason. The pack is that checklist in a box.

Why not buy the items separately?

You can. Both products are in our catalog individually. The pack exists for buyers who want the sound test materials handled in one decision and one shipment instead of sourcing a sealant brand and a pad brand separately.

Can I use the sealant in fire rated walls?

Sound Seal 90 is for sound and smoke sealing in non fire rated assemblies. The putty pads carry up to a 2 hour fire rating for electrical boxes. Where a wall is fire rated, joints and penetrations need a listed firestop system, covered in our firestop product selection guide.