Compare Gentek .046-inch Sequoia Select vinyl siding, SteelTek Supreme steel siding, and ASCEND Composite Cladding for Quad Cities wind, hail, storms, temperature changes, and moisture. Learn how ASTM standards, VSI certification, correct installation, and guidance from VSI Trainer Brian “JR” Girskis help contractors choose the right exterior cladding.

Quad Cities Siding and Weather-Performance Guide

Best Vinyl Siding for Quad Cities Weather

Quad Cities homes face strong winds, hail, severe thunderstorms, wind-driven rain, humid summers, freezing winters, and repeated temperature changes. Gentek .046-inch Sequoia Select vinyl siding, Gentek SteelTek Supreme steel siding, and ASCEND Composite Cladding are three excellent exterior solutions—but each addresses weather exposure in a different way.

There is no single siding material that is automatically best for every home in Davenport, Bettendorf, Moline, Rock Island, East Moline, or the surrounding Quad Cities. The right recommendation depends on the building, its exposure, the homeowner’s priorities, the selected profile, and the quality of the installation.

A home on an open rural lot may experience wind differently from a home protected by neighboring buildings and mature trees. A west-facing wall can receive intense afternoon heat, while a shaded north wall may remain damp longer after a storm. Roof overhangs, wall height, building shape, nearby terrain, and the condition of the existing wall assembly also matter.

For contractors, the stronger sales conversation is not simply “Which siding is toughest?” The better question is: “Which properly specified and installed siding system best fits this home, this exposure, and this customer?”

What Quad Cities Weather Demands From Siding

Exterior cladding does more than establish the color and style of a house. It is the first visible layer of a larger wall system that must manage wind, precipitation, temperature movement, and daily exposure.

Strong Wind and Pressure Changes

Thunderstorm winds create suction and pressure across wall surfaces. Panel locks, fastening hems, fastener spacing, substrate condition, wall height, corners, and installation details all affect performance.

Hail and Flying Debris

Impact performance depends on the material, panel design, temperature, hailstone size, wind speed, age, and point of impact. No conventional siding should be marketed as completely hail-proof.

Wind-Driven Rain

Siding is a cladding, not the home’s only water-control layer. Flashing, a code-compliant water-resistive barrier, properly detailed openings, and drainage paths remain essential.

Temperature Movement

Quad Cities exteriors experience hot summer sun and below-freezing winter temperatures. Products must be installed so they can respond to expected thermal movement without buckling or distortion.

Freeze-Thaw Conditions

Water that enters poorly detailed joints or wall penetrations can freeze and expand. Correct flashing and moisture management are therefore just as important as the visible siding selection.

Humidity and Moisture

Midwest humidity can expose weaknesses in wall assemblies. Cladding, sheathing, flashing, ventilation, and the water-resistive barrier must function as one system.

Weather-Resistant Does Not Mean Weather-Proof

This distinction matters. Laboratory testing helps contractors compare products under controlled conditions, but it does not guarantee that every installation will survive every storm without damage.

Actual performance depends on the exact product and profile, building height, exposure category, design pressure, sheathing, fastener type, fastener penetration, spacing, installation quality, and the severity of the event. Marketing language should never replace the manufacturer’s technical data or the requirements of the applicable building code.

Gentek .046-Inch Sequoia Select Vinyl Siding

Premium Vinyl Solution

Gentek Sequoia Select is an ultra-premium vinyl siding designed for homeowners who want the low-maintenance advantages of vinyl with a heavier, more rigid panel. Its .046-inch nominal wall thickness helps create straighter wall lines and a more substantial finished appearance than many lighter vinyl products.

Manufacturer literature identifies several construction details that contribute to the system:

Heavy-duty .046-inch nominal panel thickness.
A full-roll nailing hem for stronger wall attachment.
Gentek’s Advantage Lock system, designed to connect panels securely.
A full 3/4-inch lap height for stronger shadow lines and dimension.
Negative wind-load testing performed under ASTM D5206.
A lifetime limited, non-prorated, transferable warranty with stated fade and hail protection, subject to the complete warranty terms.

Why Sequoia Select Works Well in the Quad Cities

Sequoia Select offers a useful balance of strength, appearance, low maintenance, and broad design flexibility. The heavier panel can help produce a straighter-looking finished wall, while the locking and fastening systems are engineered to support tested wind-load performance.

Gentek reports that certain Sequoia Select configurations have withstood wind-load testing equivalent to speeds up to 253 mph. That number must be used carefully: it is a laboratory test result for specified product configurations—not a promise that every wall, profile, or installation will withstand a 253-mph real-world storm.

Wind-load performance can vary by profile and installation. Contractors should confirm the technical data for the exact panel being supplied and follow the current Gentek installation instructions.

Explore Gentek Sequoia Select

Gentek SteelTek Supreme Steel Siding

High-Strength Metal Solution

SteelTek Supreme is a strong option for homeowners who place a high priority on material strength, impact resistance, dimensional stability, and long-term coating performance.

Manufacturer specifications describe SteelTek Supreme as:

Roll-formed, 29-gauge Galvalume AZ-50 steel.
Manufactured with a reported yield strength of 35,000 pounds per square inch.
Finished with Kynar PVDF coating technology.
Engineered for resistance to hail damage, denting, scratching, chalking, and color change.
Backed by a lifetime limited, non-prorated, transferable warranty with stated 50-year hail and 35-year chalk and color-change protection, subject to the written warranty.

Why SteelTek Supreme Works Well in the Quad Cities

The strength of roll-formed steel makes SteelTek Supreme an appealing choice for exposed homes, high-value exterior projects, and customers concerned about severe weather. The Galvalume construction combines steel with the corrosion-resisting benefits of aluminum and zinc, while the Kynar PVDF finish is designed to support color retention and surface durability.

Steel is not indestructible. Very large hail, windborne debris, improper handling, or incorrect installation can still damage a steel panel. Contractors must also use compatible accessories and follow the manufacturer’s cutting, fastening, and installation instructions.

The practical advantage is that SteelTek Supreme gives weather-focused customers a metal cladding option with substantial material strength and a high-performance coating system.

Explore SteelTek Supreme Steel Siding

ASCEND Composite Cladding

Insulated Composite Solution

ASCEND Composite Cladding offers a different approach. It combines a glass-reinforced polymer surface with graphite-infused polystyrene, creating a lightweight composite system designed to deliver the appearance of painted wood with tested structural, impact, and weathering performance.

ASCEND technical and code-compliance documentation references testing that includes:

Impact resistance evaluated under ASTM D4226.
Wind-load resistance evaluated under ASTM D5206.
Weathering and freeze-thaw durability evaluated under ICC-ES AC92.
Thermal and moisture-related movement evaluated under ASTM D1042.
Thermal performance evaluated under ASTM C1363.
Code-compliance documentation addressing specified fastening, sheathing, and allowable design pressures.

Why ASCEND Works Well in the Quad Cities

ASCEND can be a strong choice for customers who want the visual depth of a higher-end cladding, additional insulating value, tested impact resistance, and documented freeze-thaw durability. Those qualities are relevant in a climate that moves between summer heat, winter cold, high humidity, storms, and repeated seasonal changes.

Its insulated composite construction also creates a more substantial feel than hollow-backed siding. That does not eliminate the need for correct sheathing, flashing, a water-resistive barrier, compatible accessories, and manufacturer-specified fastening.

ASCEND is an exterior cladding or rainscreen component—not the home’s primary waterproof barrier. The wall behind it must be built and detailed to manage water according to applicable codes and manufacturer instructions.

Explore ASCEND Composite Cladding

Which Product Is Best for Your Customer?

Customer Priority	Strong Product Direction	Why
Premium Vinyl Performance	Sequoia Select	Heavy-duty .046-inch panel, premium rigidity, strong locking system, low maintenance, and tested wind-load performance.
Maximum Material Strength	SteelTek Supreme	29-gauge Galvalume steel construction with a high-performance Kynar PVDF finish and long-term hail provisions.
Insulated Composite Construction	ASCEND	Composite construction with documented impact, wind-load, thermal, weathering, and freeze-thaw testing.
Traditional Vinyl Appearance	Sequoia Select	Familiar installation system with deeper shadow lines, numerous profiles, and broad color coordination.
Painted-Wood Appearance	ASCEND	Textured composite surface designed to provide the look of high-end painted wood without routine repainting.
Hail-Focused Warranty	Compare All Three	Review material construction, applicable hail provisions, homeowner insurance requirements, labor limitations, deductibles, exclusions, and transfer terms.

What VSI and ASTM Standards Actually Tell You

ASTM standards provide repeatable methods for evaluating product characteristics. The VSI Product Certification Program—now administered through the Polymeric Exterior Products Association—uses independent third-party verification to confirm that listed polymeric siding products meet the applicable program requirements.

ASTM D3679

Standard specification for rigid PVC siding. It addresses product requirements that include dimensions, weatherability, wind-load resistance, and impact-related performance.

ASTM D5206

Test methods used to evaluate wind-load resistance of rigid plastic siding systems under controlled pressure conditions.

ASTM D4226

Test methods used to evaluate impact resistance of rigid PVC building products and referenced in ASCEND’s technical evaluation.

ASTM D4756

Standard practice addressing the installation of rigid PVC siding and soffit. Installation remains essential to achieving the intended product performance.

Standards do not declare one siding material universally superior. They tell contractors how products were evaluated and provide a more credible basis for comparison than vague claims such as “storm-proof” or “the strongest siding available.”

Does .046-Inch Thickness Automatically Mean Better Wind Resistance?

Not by itself. Panel thickness contributes to rigidity and can help the installed siding maintain straighter wall lines, but wind-load performance depends on the complete system.

Panel and profile geometry.
Locking-system design.
Nailing-hem construction.
Fastener type and head diameter.
Fastener spacing and penetration.
Sheathing and substrate condition.
Building height and design pressure.
Quality of installation.

Sequoia Select is compelling because the .046-inch panel is combined with a full-roll nailing hem, Advantage Lock system, and tested wind-load performance. Thickness is part of the engineering—not the entire engineering story.

Installation Determines Whether the Product Can Perform

Premium siding cannot compensate for careless installation. The wall must be prepared correctly, the water-control layers must be continuous, and the cladding must be fastened according to the current manufacturer’s instructions.

Critical installation details include:

Install a code-compliant water-resistive barrier over the structural sheathing.
Integrate window, door, roof-to-wall, and penetration flashing with the water-resistive barrier.
Use the fastener type, length, head diameter, spacing, and penetration required for the exact product.
Center fasteners in applicable slots unless the manufacturer directs otherwise for a specific location.
Do not drive vinyl siding fasteners so tightly that the panels cannot move with temperature changes.
Maintain manufacturer-required clearances at corners, channels, openings, and accessories.
Keep starter strips level and securely fastened.
Confirm that locks are fully engaged without stretching or distorting the panel.
Follow product-specific instructions rather than treating vinyl, steel, and composite cladding as interchangeable systems.

The best weather-performing exterior is a complete assembly: sound sheathing, a continuous water-resistive barrier, correct flashing, approved fasteners, proper clearances, compatible accessories, and cladding installed to specification.

Contractor Training and Technical Support

Leverage Your Local VSI Trainer

Suburban Wholesale & Supply contractors have access to more than a warehouse and material counter. Brian “JR” Girskis, President of Suburban Wholesale & Supply, is a VSI Trainer with more than 25 years of building-material and exterior-remodeling experience.

JR can help contractors review product selection, panel differences, fastening practices, expansion clearances, wall preparation, flashing, accessories, manufacturer instructions, and common installation problems before they become expensive callbacks.

This is especially valuable when a crew is moving from conventional vinyl siding into premium .046-inch vinyl, steel siding, board and batten, or composite cladding. Each system has its own installation requirements. Experience with one material does not automatically qualify a crew to improvise with another.

Our Practical Recommendation

Choose Gentek Sequoia Select when the homeowner wants premium .046-inch vinyl siding with greater rigidity, attractive shadow lines, low maintenance, broad color selection, and documented wind-load testing.

Choose Gentek SteelTek Supreme when material strength, impact resistance, a high-performance Kynar PVDF finish, and long-term hail provisions are central to the customer’s decision.

Choose ASCEND Composite Cladding when the customer wants an insulated composite system with a painted-wood appearance and documented impact, wind-load, thermal, weathering, and freeze-thaw testing.

All three are credible premium solutions for Quad Cities weather. The best choice depends on the house, exposure, design goals, budget, installation team, and the customer’s long-term expectations.

Build a Better Weather-Ready Exterior

Visit Suburban Wholesale & Supply to compare Gentek .046-inch Sequoia Select vinyl siding, SteelTek Supreme steel siding, and ASCEND Composite Cladding in person. Bring your plans, measurements, photographs, specifications, or installation questions.

Our team can help contractors identify the right product, accessories, fastening requirements, installation resources, and delivery plan for projects throughout Davenport, Bettendorf, Moline, Rock Island, East Moline, and the surrounding Quad Cities.

Brian “JR” Girskis, President and VSI Trainer
Suburban Wholesale & Supply
3602 North Harrison Street
Davenport, Iowa

Product specifications, testing, warranties, and code requirements may change. Wind speeds should not be treated as direct guarantees of real-world storm performance. Always verify the exact product, profile, design pressure, fastening schedule, current manufacturer instructions, applicable evaluation reports, and local code requirements before ordering or installing.

Best Siding for Quad Cities Weather | Gentek & ASCEND