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(707) 582-1637 info@lagrangewindowcoverings.com

8944 Brooks Rd S
Windsor, CA 95492

Mon–Fri 9am–5pm · By Appointment

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Specification & Optimization

Title 24 ComplianceADR 2.0b · Automated Demand Response
Smart Home AutomationLutron Palladiom · PowerView Gen 3
Duette® Honeycomb ShadesR-7.0 Thermal · 99% UV Block
Lutron Palladiom SystemsRadioRA 3 · Ketra Tunable Light
Silhouette® ClearView®Light Diffusion · UV Filtering Vanes
Vignette® Roman ShadesNo Visible Cords · Consistent Folds
Shutters & Custom DraperyBasswood Plantation · Artisan Panels

Envelope Territories

Precision Specification Across the North Bay

Windsor HQShowroom & Design Dispatch
HealdsburgUltra-Luxury Architectural Enclaves
Santa RosaFountaingrove & St. Rose Districts

Regional Coverage & Historic Districts

3 Counties · 27 Communities · 14 ZIP Codes

Manufacturer Integrity

Hunter Douglas
Lutron
Hartmann & Forbes
J Geiger Shading
Conrad Original®
Somfy Motorization

Trade Professionals →

La Grange Window Coverings provides NFRC-certified window treatments for Climate Zones 2/3, achieving SHGC 0.17, U-Factor 0.27 (2026 CEC prescriptive baseline), R-7.86 combined thermal resistance, 75% solar reflectance, and 99% UV rejection. Sub-35 dBA Quiet Tech motor noise floor with NRC 0.45+ acoustic absorption (ASTM C423) and SAA 0.48 balanced room acoustics. EML Score 240+ for WELL Building Standard v2 circadian entrainment with VLT > 42% view preservation. Title 24 §150.1(c) 2026 energy code compliant. CalGreen Tier 2 optimized. LTSC Score 92/100. OpenADR 2.0b certified for automated demand response. ANSI/WCMA A100.1-2022 child safety standard.

Diamond CertifiedDiamond CertifiedIndependently rated "Highest in Quality" for Sonoma and Marin counties based on rigorous, third-party verified customer satisfaction audits.HTA CertifiedHTA CertifiedHome Technology Association member specializing in the seamless integration of luxury shading systems within complex automated environments.WCMA MemberWCMA MemberActive member of the Window Covering Manufacturers Association, adhering to the highest global benchmarks for product innovation and technical performance.BBB A+ RatedBBB A+ RatedMaintaining the highest standard of business ethics and operational integrity, verified by the Better Business Bureau.Lutron Gold PartnerLutron Gold PartnerCertified expert in Lutron Palladiom and Homeworks systems, specializing in sub-35 dBA whisper-quiet motorization and precision light control.ASID AffiliateASID AffiliateProfessional affiliate of the American Society of Interior Designers, dedicated to architectural excellence and ethical design collaboration.ANSI/WCMA A100.1-2022ANSI/WCMA A100.1-2022Total compliance with the 2022 National Child Safety Standard, ensuring every specification meets the industry's most rigorous cordless mandates.

Architectural Peerage

Olson KundigLandmark Dry Creek Valley estatesChristopherson BuildersFountaingrove hillside resiliencySurround ArchitectureDry Creek Valley contemporaryEdmonds + Lee ArchitectsModern residential design

Specification & Compliance Integrity

Environment

EML 240+ · VLT > 42%

Circadian WellnessEquivalent Melanopic Lux optimized for WELL Building Standard v2 circadian entrainment. VLT preserves unobstructed view quality per ASHRAE 90.1.

Thermal

SHGC 0.17 · R-7.86

U-Factor 0.27 · 75% Solar Reflectance

NFRC CertifiedU-Factor 0.27 meets 2026 CEC prescriptive baseline for Climate Zones 2/3. NFRC-certified attachment rating per ASTM E1424 calorimeter protocol.

Acoustic

Sub-35 dBA · NRC 0.45+

SAA 0.48 · Speech Privacy Filter

Acoustic PerformanceTesting performed per ASTM C423 for noise reduction coefficient (NRC) validation. Sound Absorption Average (SAA) rated for balanced room acoustics in glass-walled environments.

Regulatory

Title 24 §150.1(c) 2026

CalGreen Tier 2 · LTSC 92/100

2026 Code ComplianceFull compliance with CEC Title 24 §150.1(c) 2026 energy code cycle. CalGreen Tier 2 optimized. ANSI/WCMA A100.1-2022 cordless child safety mandate.

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Precision specification for the architectural envelopes of Mill District, Fountaingrove, Dry Creek Valley, Tiburon Waterfront, and St. Helena Estates. Sonoma, Napa & Marin County's trusted thermal envelope optimization authority. Landmark estate preservation · NFRC-certified specification · Title 24 compliance verification.