SCIF Construction
Technical Guide

SCIF Construction Best Practices

Comprehensive guide to building ICD 705 compliant Sensitive Compartmented Information Facilities.

15 min read Intermediate

Introduction

A Sensitive Compartmented Information Facility (SCIF) is a secure room where classified national security information is stored, discussed, and processed. ICD 705 establishes the standards for SCIF construction, and compliance is mandatory for government agencies and contractors handling sensitive intelligence.

This guide covers the essential requirements and best practices for constructing a compliant SCIF, from initial planning through final certification.

Key ICD 705 Requirements

1. RF Shielding

SCIFs must provide RF attenuation of at least 60dB across the frequency range of 10kHz to 40GHz. This prevents electromagnetic emissions from escaping and protects against external RF threats.

2. Acoustic Protection

Sound insulation must meet TEMPEST standards to prevent acoustic emanations. This typically requires a minimum of 50dB sound transmission class (STC) rating for walls and doors.

3. Visual Protection

Windows must be eliminated or protected with RF shielding treatments. Viewports, if permitted, must include appropriate attenuation.

4. Access Control

Physical security measures including secure doors, locks, and intrusion detection systems are required. Entry must be restricted to personnel with appropriate clearances.

5. Construction Standards

All construction must be inspected and approved before classified information is introduced. This includes penetration sealing, filter installation, and grounding systems.

Construction Best Practices

Design Phase

  • • Engage certified SCIF designers early
  • • Consider future expansion needs
  • • Plan for proper HVAC filtration
  • • Coordinate with security officials

RF Shielding

  • • Use modular shielding systems
  • • Ensure continuous shielding envelope
  • • Pay attention to seams and joints
  • • Test before closing walls

Electrical

  • • Install properly filtered conduits
  • • Use RF-gasketed enclosures
  • • Implement comprehensive grounding
  • • Plan for equipment power needs

Quality Control

  • • Conduct interim inspections
  • • Document all penetration seals
  • • Perform pre-certification testing
  • • Maintain as-built drawings

Common Mistakes to Avoid

Skipping pre-construction consultation with the Cognizant Security Authority
Using uncertified shielding materials
Failing to test before closing walls
Improper penetration sealing
Inadequate doorframe grounding
Forgetting about HVAC and utility penetrations

Ready to Start Your SCIF Project?

Our team has decades of SCIF construction experience and can guide you through the entire process.