Choosing the right windows and doors is a major decision for any homeowner or builder. Among the many certifications and standards to consider, WDMA is one of the most trusted in the industry. But what exactly are WDMA windows and doors, and why are they worth considering?
This guide explains the key benefits, standards, and ratings associated with WDMA-certified windows and doors in 2025.
What Is WDMA?
WDMA stands for the Window & Door Manufacturers Association, a U.S.-based organization that develops and promotes high standards for the window and door industry. WDMA members include some of the most respected names in manufacturing, and their standards are recognized across North America.
What Are WDMA Windows and Doors?
WDMA-certified windows and doors have been tested and verified to meet strict requirements in terms of:
- Structural performance
- Energy efficiency
- Air and water resistance
- Operational durability
- Safety and building code compliance
These products carry the WDMA Hallmark Certification, indicating they meet or exceed recognized industry benchmarks.
WDMA Standards and Ratings: What to Know
1. Performance Grade (PG)
The PG rating evaluates a product’s ability to withstand wind, rain, and pressure. It includes:
- Air infiltration
- Water penetration
- Structural load resistance
PG ratings range from PG20 to PG100+, with higher numbers indicating better performance—especially critical in regions with extreme weather.
2. NFRC Energy Ratings
WDMA works with the National Fenestration Rating Council (NFRC) to ensure certified products provide clear, reliable energy performance data:
- U-Factor (lower = better insulation)
- SHGC (Solar Heat Gain Coefficient) (lower = better at blocking heat)
- VT (Visible Transmittance) (higher = more natural light)
These metrics help homeowners compare energy savings and comfort levels.
3. WDMA Hallmark Certification
This is the most widely recognized seal of WDMA compliance. It ensures:
- Third-party verified testing
- Conformance to ASTM and CSA standards
- Approval under local and national building codes
4. Material and Construction Requirements
WDMA guidelines also promote the use of durable, sustainable materials like:
- FSC-certified wood
- Low-VOC coatings
- Recyclable frame components
Benefits of WDMA-Certified Windows and Doors
✅ Proven Durability
Products are tested under real-world conditions to ensure they resist wear, warping, leaks, and damage.
✅ Energy Efficiency
Certified windows and doors are designed to reduce heat loss and improve thermal insulation, leading to lower energy bills.
✅ Building Code Compliance
Most states and provinces recognize or require WDMA-certified products for new builds and renovations.
✅ Higher Property Value
Homes with high-performance windows and doors often sell for more and appeal to eco-conscious buyers.
✅ Consumer Confidence
The WDMA label means a product has passed independent testing and meets strict national standards—offering peace of mind for buyers.
Popular Brands Offering WDMA-Certified Products
Some of the top manufacturers that align with WDMA standards include:
- Andersen Windows
- Pella Corporation
- Marvin Windows and Doors
- Kolbe Windows & Doors
- JELD-WEN
Before purchasing, always confirm that the product carries the WDMA Hallmark label.
Final Thoughts
WDMA windows and doors are a smart investment for anyone looking to enhance their home’s comfort, efficiency, and long-term value. With clearly defined standards and performance ratings, WDMA-certified products provide both reliability and transparency.
If you’re planning a window or door upgrade in 2025, choosing a WDMA-certified product ensures you’re getting top-tier quality backed by rigorous testing and national compliance.