Casement Series
DERCHI USA Crank Casement Window Thermal Break Double Glass
- Frame Material: Thermal Break Aluminum
- Mesh Option: 316 Stainless Invisible Screen
- Applications: Coastal Luxury Residential
Factory-direct window assemblies and integrated insect screens extruded, welded, and glazed to withstand Puget Sound coastal weather and extreme Pacific Northwest seasonal shifts.
Architectural fenestration in the Pacific Northwest requires specialized material science to prevent frame thermal bridge loss, withstand salt-laden air, and block fine seasonal allergens.
Properties along Puget Sound, Elliott Bay, and Lake Washington face relentless salt fog and high relative humidity. Our window screens utilize Marine-Grade 316 Stainless Steel mesh bonded to electrostatically powder-coated 6063-T6 aluminum frames, eliminating galvanic corrosion and wire degradation.
Spring in King County brings heavy pollen loads from Alder, Birch, and Douglas Fir, followed by airborne mold spores during damp autumn months. Our dense-weave electrostatic micro-mesh retains ventilation while filtering sub-micron particles, ensuring clean indoor air.
Exposed hillside homes in Bellevue, Queen Anne, and West Seattle experience intense winter wind pressures. Our screen retention channels are engineered with tension-locked spline grooves that hold screens taut under gusts up to 90 mph without blowouts.
Seattle’s climate presents a rigorous test for residential and multi-family window assemblies. With over 150 rainy days per year and relative humidity frequently exceeding 80%, fenestration hardware is constantly exposed to moisture accumulation. Traditional mechanically fastened aluminum frames suffer from joint separation over time, permitting water penetration into envelope wall cavities. To solve this systemic failure point, our factory utilizes precision fusion-welding for vinyl series and high-strength polyamide thermal break struts for aluminum series.
When specifying window screen mesh for the Pacific Northwest, architects must balance optical clarity against airflow resistance and pest exclusion. During the mild summer months, natural stack ventilation is the primary cooling mechanism for homes in neighborhoods such as Ballard, Capitol Hill, and Fremont. Standard 18x14 insect mesh often obstructs up to 45% of natural breeze. Our premium High-Visibility Invisible Mesh (UltraVue Equivalent) uses a 0.008" wire diameter weave that boosts natural airflow by 28% while maintaining total barrier defense against midges, gnats, and mosquitoes.
Tested under simulated PNW atmospheric chamber conditions (ASTM B117 Salt Spray & ASTM E330 Wind Pressure):
How evolving energy codes, biophilic urban design, and climate adaptation are reshaping window and screen specification across Washington State.
The Washington State Energy Code (WSEC) mandates lower maximum U-factors (≤ 0.28 for residential windows). Builders are shifting heavily toward multi-chambered vinyl profiles and warm-edge spacer low-E IGUs equipped with snap-in screen retention slots that prevent thermal leakage.
Modern Seattle architecture heavily features expansive indoor-outdoor sliding glass wall systems. Concealed motorized retractable screens that roll out only during evening insect activity have seen a 42% growth rate in luxury developments in Medina and Kirkland.
With urban density increasing near major transport corridors like I-5, I-90, and SeaTac flight paths, acoustic window packages combining asymmetrical double glass with sound-dampening heavy-gauge screens are now standard specifications for apartment developers.
Unlike local assembly shops that source mismatched frames, corner keys, and screen mesh from third-party catalog distributors, our manufacturing complex controls every single stage of production under one roof.
Compare screen mesh types, structural frame alloys, and coating options to select the ideal combination for your Seattle building schedule.
| Mesh Material Type | Wire Gauge / Weave | Airflow Passage (%) | Corrosion Rating (Salt Spray) | Best Seattle Application |
|---|---|---|---|---|
| 316 Marine Stainless Steel | 0.011" / 12x12 Mesh | 64% | 5,000+ Hours (Superior) | Coastal Puget Sound & Security Screens |
| High-Visibility Fiberglass (UltraVue) | 0.008" / 18x18 Mesh | 78% | 3,000 Hours (High) | Residential View Preservation (Mercer Island) |
| Electrostatic Pollen Screen | Micro-Weave / 30x30 Mesh | 52% | 2,500 Hours (Moderate) | High-Allergen Suburban Belts (Redmond/Issaquah) |
| Heavy-Duty Vinyl Tuff-Screen | 0.015" Polyester Core | 58% | 4,000 Hours (High) | Pet-Friendly Patios & High-Traffic Rentals |
| Standard 18x14 Charcoal Aluminum | 0.010" Wire | 55% | 1,000 Hours (Standard) | Budget Inland Multi-Family Retrofits |
From shop drawing verification to sea-freight container consolidation, we make direct factory importing seamless and risk-free.
Submit your window schedule, CAD files, or field measurements. Our engineering desk verifies rough openings, call sizes, and egress codes.
We issue line-by-line engineering submittals specifying frame profiles, glass build-ups, low-E coatings, screen mesh types, and hardware finishes.
Profiles are extruded, fusion-welded, and glazed. Every unit undergoes strict diagonal squareness, air-tightness, and lock engagement testing.
Units are protective-wrapped, tagged by floor/opening number, and crated in sea-freight containers for direct delivery to Port of Seattle job sites.
Detailed technical answers regarding Pacific Northwest shipping, energy codes, custom screen replacement, and salt air durability.
For coastal and waterfront properties exposed to saltwater atmosphere (such as Alki, Bainbridge Island, and West Seattle), we strongly specify 316 Marine-Grade Stainless Steel Mesh combined with fluoropolymer powder-coated aluminum frames. Standard aluminum mesh rapidly oxidizes when exposed to marine salt fog, leading to white rust, brittle wire snapping, and screen sag within 18-24 months. Marine 316 stainless mesh resists corrosion under ASTM B117 salt spray testing for over 5,000 hours while providing enhanced security and cut resistance.
WSEC requires strict overall fenestration U-factors (≤ 0.28) and solar heat gain coefficients (SHGC). Our window units integrate high-efficiency vinyl and thermal break aluminum frames with triple-silver LoĒ³-366 glass packages. The companion insect screens feature flush snap-in mounting channels designed to preserve the complete thermal boundary without compressing weatherstripping or creating thermal bridges at the sash perimeter.
Yes. Because we own the profile extrusion dies and specialized screen frame bending jigs, we fabricate custom screens in 1/8-inch increments to match any architectural geometry. This includes true arches, half-round tops, trapezoids, single-hung, horizontal sliders, and crank casement windows. Every screen is pre-fitted to the window assembly at our factory before shipping to guarantee an exact latch fit.
Export orders destined for the Seattle market are packaged using heavy-duty export-grade plywood crates with foam interlayers between every window unit. Frame corners are shielded with reinforced plastic corner guards. Crates are desiccated and vacuum-sealed in moisture-barrier film to prevent condensation damage during trans-Pacific ocean shipping, arriving ready for direct flatbed transport to local job sites.
Standard production lead time for custom container-load window schedules is typically 2 to 3 weeks from approved shop drawings. Ocean transit from port to port to the Port of Seattle (NWSA) takes approximately 14 to 18 days. We also offer expedited air freight options for replacement components or sample mock-ups required for architectural review.
Our complete window assemblies are backed by a comprehensive Limited Lifetime Warranty covering vinyl frame extrusions against cracking or peeling, welded corner structural integrity, insulating glass seal seal-failure, and hardware operation. Stainless steel and fiberglass mesh carry dedicated material degradation warranties against UV chalking and wire separation.
Send us your window schedule or construction drawings today. Our engineering team will review your specifications, verify WSEC compliance, and return a comprehensive line-item factory quote.
