Sound Control Doors

Which Soundproof Door Is Right for My Project?

The best soundproof door for your project depends on your goals and wall design.

• Standard wall (no isolation products or light materials like MLV or resilient channel): Choose the IsoDoor V.
• Wall with Green Glue, multiple drywall layers, or staggered studs: Choose the IsoDoor SD.
• Wall with resilient clips or double-stud framing: Choose the IsoDoor HD or IsoDoor HD LF for maximum noise reduction.

Available Sizes

Our standard acoustic door size is 36" × 80", but we can manufacture nearly any size.

• Single doors: 24"–48" wide, 24"–96" tall
• Double doors: 48"–96" wide, 24"–96" tall

Soundproof Door Models

IsoDoor V

Perfect for home offices, bedrooms, and hotels that need better sound isolation than a solid-core door.

• 1-3/4" thick, 150 pounds (7.5 pound per square foot)
• Performs well in walls up to STC 47

IsoDoor SD

Best for recording booths, offices, and studios needing more privacy and sound control.

• 1-3/4" thick, 230 pounds (11.5 pounds per square foot)
• Performs well in walls up to STC 55

IsoDoor HD / IsoDoor HD LF

Designed for home theaters, recording studios, and high-performance acoustic spaces.

• 2-1/2" thick, 340 pounds (17 pounds per square foot)
• Performs well in walls up to STC 64

The HD LF version delivers superior low-frequency noise reduction, ideal for professional audio environments.

Communicating Doors for Maximum Performance

For the highest STC and OITC ratings, we recommend communicating assemblies, where two soundproof doors are installed in one opening—commonly used in hotel and studio walls. Our tests from STC 50–63 use combinations of the IsoDoor V, SD, and HD models.

Understanding Higher STC Ratings

Some brands claim single doors with “STC 56” ratings, but most cannot deliver. A genuine STC 56 door typically weighs 800 lb, includes a steel and concrete frame, and costs over $12,000. Many advertised ratings are outdated or inaccurate. Remember, your wall’s STC rating determines what you need:

• A STC 50 wall only needs about an STC 40 door.
• For home theaters or studios, focus on low-frequency soundproofing (OITC), not just STC numbers.

Share your project goals and wall design, and we’ll help you choose the right soundproof interior door for your space.