Frequently Asked Questions

Find answers to common questions about our ceiling systems, acoustic performance, installation process, and service area.

Services & Materials

  • What ceiling systems does Schaefer Acoustics install?

    We install acoustic tile, suspended grid systems, decorative and linear metal ceilings, Compässo trim systems. Most commercial projects combine one or more of these depending on the space. We also supply material directly to contractors who prefer to handle their own installation.

  • Do you work with both commercial and institutional buildings?

    Yes. Our project history spans offices, schools, hospitals, retail spaces, and restaurants. Each building type carries different acoustic, durability, and code requirements, so we specify material and installation around the specific space rather than applying one standard package across every project.

  • What's the difference between suspended and direct-mount ceiling systems?

    Suspended systems use a metal grid that leaves the space above accessible for wiring and ductwork. Direct-mount panels adhere to an existing surface, preserving more ceiling height but making future access harder. The right choice depends on your building’s maintenance needs and available clearance.

  • Can you install acoustic wall panels alongside ceiling work?

    Yes, and we often recommend it. Ceilings and walls solve different acoustic problems, overhead reflection versus lateral reflection, so rooms with hard, parallel walls usually need both addressed to reach a genuinely quiet result rather than a partial fix.

  • What is a Compässo ceiling system?

    It’s a USG suspension trim system that creates free-form ceiling islands, ovals, clouds and fascia instead of a flat grid. It suits lobbies and open offices where the ceiling is meant to be a design feature, not just a finished surface overhead.

  • Do you supply ceiling tile without installation?

    Yes. We supply Armstrong, USG, and specialty materials directly to contractors and building owners, with or without our installation crew attached. If you already know your product line, we can quote material alone, no installation commitment required.

Performance & Specifications

  • What does NRC rating actually mean?

    Noise Reduction Coefficient measures how much sound a panel absorbs, on a scale from 0 to 1. A rating of 0.70 or higher is generally considered high performance. Standard acoustic tile typically falls between 0.50 and 0.70.

  • Is a higher NRC rating always better?

    Not necessarily. A very high NRC panel in a small room can feel acoustically flat or unnaturally quiet. Matching the rating to the room’s size and use matters more than simply choosing the highest number available.

  • What's the difference between NRC and CAC ratings?

    NRC measures sound absorbed inside the room where a panel is installed. CAC measures how well it blocks sound from passing into the space above. A panel strong in one can be average in the other, so both matter depending on the application.

  • Can metal ceilings control sound as well as acoustic tile?

    Metal panels alone reflect more sound than they absorb. Getting comparable acoustic performance requires an absorptive backing layer behind the visible panel. Perforated metal options let sound pass through into that backing, closing most of the performance gap.

  • How do I know if my ceiling or my walls are causing a noise problem?

    Try clapping once in the room. If the echo seems to come from overhead, the ceiling is likely the main issue. If it seems to bounce side to side, the walls are doing more of the damage than the ceiling.

Working With Schaefer Acoustics

  • How long has Schaefer Acoustics been in business?

    Since 1989. We’re a family owned, union contractor based in Duluth, with three decades of experience across healthcare, education, and commercial construction throughout the region, working both sides of the Twin Ports.

  • Are your installers union trained?

    Yes. Every installer completes formal training and apprenticeship, which shows up in consistent workmanship: level grids, precisely cut tile, and fewer callbacks once a project wraps, even on complex commercial jobs.

  • Can you install ceilings in a building that stays open during construction?

    Yes, regularly. We phase most commercial installations around active business hours and coordinate directly with staff to minimize disruption, a common requirement for hospitals, schools, and retail spaces that can’t simply close their doors for weeks.

  • How far in advance should I schedule a ceiling project?

    As early as possible, ideally during design or planning. Standard materials ship quickly, but specialty finishes and custom components can take a month or more, and summer construction season tends to book up fastest across the region.

  • Do you provide a written estimate before work begins?

    Yes. Every project starts with a site walkthrough to confirm grid condition, material needs, and scope, followed by a straightforward estimate. We flag any lead time or access concerns upfront rather than after a contract is signed.

  • What should I ask before hiring a ceiling contractor?

    Ask how much of their work is ceiling-specific, whether their crew is union trained, which brands they install, and how they handle occupied buildings. Specific answers to these questions matter more than the lowest bid on paper.

Service Area