BPI Certified Professional

William B. Winkel is a Building Performance Institute Certified Professional

Qualifications: In business since 1993

  • MABEP Comprehensive HERS Rater
  • EPA Lead-Safe Certified Renovator
  • Efficiency Maine Participating Energy Advisor
  • Member of Maine Association of Building Efficiency Professionals
  • Fully insured, references provided on request


For Homeowners

  • Energy Efficient New Construction & Remodeling
  • Home Energy Audits
  • Weatherization Services

For Builders & Architects

  • HERS Ratings
  • REScheckTM plan review for code compliance
  • Pre-construction plan review & modeling
  • Blower door testing for code compliance
  • IECC Simulated Performance Path
  • Energy Star Certification

For Lenders & Realtors

  • HERS Ratings for Energy Efficient Mortgages
  • HERS Ratings for MLS listings

William B. Winkel Builder, Inc.
energy efficient new construction and renovation

P. O. Box 7, North Waterboro, ME 04061
voice & fax: 207.247.6226
cell: 207.604.0259
email: bill@wbwinkel.com

Efficiency Maine Energy Star RESNET EPA-lead-safe