Business Details
40 Years
experience
Emergency
services
Expert Roofing & Waterproofing Solutions in Conyers, GA
National Building Contractors (NBC) has been delivering exceptional roofing and weatherproofing solutions since 1986. As a certified small business and EDWOSB, we specialize in serving government, institutional, commercial, and industrial clients with a focus on technical expertise and quality workmanship. Our team, many of whom have worked together for decades, offers unique problem-solving capabilities and project management expertise. We are committed to safety, maintaining a zero-accident record for the past three years and an EMR of 0.72.Our services include historic restoration, 24/7 emergency response, and proactive roof asset management programs. NBCs dedication to innovation is evident in our use of advanced technologies like vegetative roofing systems and infrared analysis. We hold GSA contracts and are recognized as a Tremco SMART Contractor, ensuring compliance with federal procurement requirements while delivering cost-effective, sustainable solutions.
Services
Roof Repair
Waterproofing
Historic Restoration
Emergency Services
Vegetative Roofing
Roof Inspections
Building Envelope
Storm Damage
Preventive Maintenance
Roof Replacement
Details
- Year established: 1986
Highlights and features
- We offer 30+ years of specialized roofing expertise for government and commercial clients
- Our team maintains a zero-accident safety record for the past three years
- We provide 24/7 emergency leak mitigation services with rapid response
- Our patented vegetative roofing systems reduce environmental impact by 40%
- We hold GSA contracts and EDWOSB certification for federal procurement compliance
Associations and certifications
- EDWOSB
- GSA
- Tremco SMART Contractor
Services
Roofing Solutions
Our comprehensive roofing services address all system types including slate, metal, and thermoplastic. We provide installation, repair, and maintenance with a focus on technical complexity and long-term durability. Our team handles emergency leak mitigation and preventive maintenance programs.
Waterproofing Services
We offer complete waterproofing solutions for above and below-grade structures. Our expertise includes masonry repairs, plaza deck waterproofing, and through-wall flashing replacement. We generate detailed reports with photographic documentation and repair recommendations for all building envelope components.
Historic Restoration
Specializing in delicate architectural preservation, our craftsmen restore historic buildings while maintaining structural integrity. We handle complex projects requiring specialized techniques for materials like poured concrete and traditional slate roofing systems.
Emergency Services
Our critical services program provides 24/7 emergency leak mitigation with response times under 48 hours. We offer tiered maintenance plans with infrared analysis, photographic documentation, and leak-free warranties for comprehensive protection.
Vegetative Roofing
We design and install sustainable vegetative roofing systems that reduce environmental impact and operational costs. These systems include advanced drainage layers and specialized plant selections for optimal performance in commercial applications.
People
Effie Abrahamsen
President, CAO
President and CAO managing daily operations, project management, business development, and human resources with a focus on technical expertise since 1986. Leads NBC's strategic direction and client relations.
Alan L. Abrahamsen
Vice President
Senior Project Manager with expertise in organizational management, contract administration, and maintenance consulting. Oversees complex projects and client coordination across multiple sectors including healthcare and government.
Monte Abrahamsen
Treasurer
Project Manager specializing in contract administration and maintenance consulting. Manages financial aspects of large-scale projects while ensuring compliance with federal procurement requirements for government contracts.
Bill Abrahamsen
Project Manager
Experienced project manager with focus on estimating and maintenance consulting. Handles technical specifications and client communication for commercial and industrial roofing projects across the Southeast.
Donna Glick
Project Manager
Corporate sales specialist and project manager with expertise in contract administration and maintenance consulting. Coordinates large-scale projects for educational institutions and non-profit organizations throughout Georgia.
Questions
What types of roofing systems do you work with?
We handle all roofing systems including built-up, single-ply, metal, restoration coatings, vegetated, clay, and slate systems for both commercial and government clients.
Do you offer emergency roof repair services?
Yes, we provide 24/7 emergency leak mitigation services with response times under 48 hours and photographic documentation of all repairs performed.
Are you certified for federal government contracts?
Yes, we are EDWOSB certified and hold GSA contracts, helping government agencies meet federal procurement requirements through our specialized services.
What safety certifications do you maintain?
We maintain an EMR of 0.72 with zero accidents reported for the past three years through our comprehensive safety training program and weekly safety meetings.
Do you handle historic building restoration?
Yes, our team includes craftsmen specializing in historic restoration of architectural details while maintaining structural integrity for buildings with heritage significance.
What geographic areas do you serve?
We serve government agencies nationwide, with primary operations in the Southeast US, including Georgia, Alabama, North Carolina, and Puerto Rico.
