Drum Room Isolation Calculator

Design drum room isolation with STC requirements, wall construction, floating floor, and cost estimation.

Inputs

Drum SPL (dB)

Target exterior (dB)

Wall layers (1-4)

Room size (sq ft)

Floating floor (0/1)

Tab to move between fields

Results

Required STC

Achieved STC55

Predicted exterior (dB)55

Meets requirement (0/1)0

Estimated cost ($)$6,007.00

Adequate size (0/1)0

How to Use This Calculator

Enter Drum SPL (dB), Target exterior (dB), and Wall layers (1-4).
Set Room size (sq ft) and Floating floor (0/1).
Review the Required STC result.
Use Achieved STC and Predicted exterior (dB) to inform your decision.

How the result changes with Drum SPL (dB)

Drum SPL (dB)	Required STC
85	50
98	63
113	78
125	90

What each input means

Drum SPL (dB): Peak sound level of drums (~110 dB typical).
Target exterior (dB): Max acceptable sound outside the room.
Wall layers (1-4): 1 = Single drywall, 2 = Double, 3 = Staggered stud, 4 = Double wall.
Room size (sq ft): Floor area of drum room.
Floating floor (0/1): 1 = decoupled floating floor (+10 STC).

What each result means

Required STC: STC rating needed for target isolation.
Achieved STC: STC from chosen construction.
Predicted exterior (dB): Expected sound level outside.
Meets requirement (0/1): 1 = isolation meets target.
Estimated cost ($): Wall and floor construction cost.
Adequate size (0/1): 1 = room is large enough for drums.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Drum SPL (dB) = 110, Target exterior (dB) = 35, Wall layers (1-4) = 2, Room size (sq ft) = 120 = 5 input(s) provided
Calculate Required STC
Required STC
75 = 75
Calculate Achieved STC
55 = 55
Calculate Predicted exterior
55 = 55

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