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James Hardie
NT Windows

Austin | Siding & Windows

Complete James Hardie HardiePlank Select Cedar Mill Installation | Energy-Efficient NT Windows Twinsulator Aluminum Series

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wHAT wE DID

Siding

James Hardie

This comprehensive siding project transformed the home's exterior with James Hardie's premium HardiePlank Select Cedar Mill 8.25" fiber cement siding, engineered specifically for Austin's extreme weather conditions including 100°+ summers and severe hail storms. The installation required sophisticated framing work to integrate seamlessly with new window openings, using materials sourced from trusted suppliers like ABC Supply and Lowe's. Our crew applied Sherwin Williams 950A 55-year clear caulk throughout the project, ensuring long-term weather sealing and performance. The fiber cement material provides unmatched durability against cedar pollen, UV exposure, and thermal expansion that destroys traditional siding materials in Central Texas climates.

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Windows

NT Windows

The window upgrade featured NT Windows' Twinsulator aluminum series, selected for their superior thermal performance and structural integrity in Austin's challenging climate. Installation required creating multiple new openings with custom headers up to 8 feet, plus precision framing work using OSI closed-cell spray foam for complete air sealing. Each window received professional interior finishing including custom sills and aprons up to 96 inches, ensuring both aesthetic appeal and weatherproofing. The aluminum construction resists the thermal cycling and UV degradation common in Central Texas, while the Twinsulator design significantly improves energy efficiency compared to the original single-pane units typical in older Austin neighborhoods.

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How It works

The Journey

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First Contact

The homeowner contacted Austin Pro through a James Hardie lead generation program in late October 2024, seeking comprehensive exterior upgrades for their South Austin home. Initial conversations focused on both siding replacement and window upgrades, with the homeowner expressing concerns about energy efficiency and weather resistance.

Evaluation

Our assessment team conducted a thorough evaluation in late October 2024, documenting extensive UV damage to existing siding and window seal failures typical of homes in the 78745 area. The evaluation revealed the need for structural modifications including new window openings and custom framing work.

PLanning & Approval

Planning extended through mid-2025 as we developed specifications for the complex framing modifications and coordinated material sourcing from multiple suppliers including ABC Supply and Lowe's. The homeowner approved the comprehensive scope in October 2025, recognizing the value of premium materials engineered for Central Texas conditions.

Installation

Installation began in late October 2025 with extensive framing and woodwork, followed by precise NT Windows Twinsulator aluminum window installation using OSI closed-cell spray foam sealing. The James Hardie HardiePlank Select Cedar Mill siding installation required careful integration with new window systems and comprehensive weatherproofing using Sherwin Williams 950A caulk.

Completion

Project completion in late January 2026 included comprehensive walkthrough and quality verification of all exterior systems. The homeowner expressed satisfaction with both the aesthetic transformation and improved energy efficiency, with final invoicing completed January 27th and project closure February 5th, 2026.

Siding & Windows in Austin | Austin Pro

Major Exterior Transformation in South Austin

This comprehensive siding and windows project showcased the dramatic impact of premium exterior upgrades on a Central Texas home. The homeowner contacted Austin Pro seeking a complete solution for their aging exterior, which had begun showing typical signs of wear from Austin's harsh climate conditions.

Project Assessment and Planning

Our team discovered the existing siding had suffered significant UV damage and thermal stress typical of homes in the 78745 area. The original windows showed clear signs of seal failure and energy loss, common issues we see throughout South Austin neighborhoods built in the 1980s and 1990s. The assessment revealed the need for extensive framing modifications to accommodate both the new siding installation and upgraded window systems.

The project scope included creating new window openings with headers up to 8 feet, requiring careful structural planning and execution. Materials sourcing involved coordination with multiple suppliers including ABC Supply, Lowe's Home Centers, and specialized vendors to ensure seamless integration between all exterior components.

Premium Material Selection

For the siding upgrade, we specified James Hardie HardiePlank Select Cedar Mill 8.25" fiber cement planks. This material choice reflects our deep understanding of Central Texas climate challenges – the fiber cement construction resists the thermal expansion, hail damage, and UV degradation that destroys traditional siding materials in our region.

The window selection featured NT Windows Twinsulator aluminum units, chosen specifically for their thermal performance and structural durability. The aluminum construction handles Austin's extreme temperature swings without the warping or seal failure common with other materials, while the Twinsulator design significantly improves energy efficiency.

Complex Installation Process

The installation began with extensive framing and woodwork to prepare for both new siding and window systems. Our crew created multiple new window openings, installing custom headers up to 8 feet where required by the architectural modifications. This structural work formed the foundation for both the siding and window installations.

Window installation involved precise measurement and fitting of each Twinsulator aluminum unit, followed by comprehensive sealing using OSI closed-cell spray foam around all openings. The foam application ensures complete air sealing – critical for energy efficiency in Austin's climate where cooling costs can dominate utility bills.

Interior finishing included custom interior sills up to 96 inches and matching aprons up to 96 inches, providing professional-grade completion that many contractors overlook. The attention to interior details ensures both aesthetic appeal and long-term performance.

Precision Siding Installation

The James Hardie HardiePlank Select Cedar Mill installation required careful coordination with the new window systems. Each plank was cut and fitted to integrate seamlessly with the aluminum window frames, creating weather-tight transitions crucial for our climate.

Weatherproofing involved extensive application of Sherwin Williams 950A 55-year clear caulk – a premium sealant engineered for long-term exterior exposure. This caulk system provides decades of weather protection, critical given Austin's combination of intense UV exposure, thermal cycling, and severe weather events.

Additional System Integration

The project included a 6'8" garage door installation and 6-foot sliding patio door, requiring coordination between multiple installation teams. Each component was integrated with the overall weather barrier system, ensuring consistent performance across all exterior openings.

Material disposal and site management involved comprehensive cleanup including designated dump fees, reflecting our commitment to responsible project completion and neighborhood respect.

Performance Results and Benefits

The completed installation delivers multiple performance advantages specifically valuable for Austin homeowners. The fiber cement siding provides superior hail resistance – a critical consideration given our region's severe weather patterns. The material's thermal stability prevents the expansion and contraction issues that plague vinyl and wood siding in our climate.

The NT Windows Twinsulator units significantly improve energy efficiency through advanced aluminum construction and thermal breaks. The homeowner can expect reduced cooling costs during Austin's extended summer season, when temperatures regularly exceed 100°F.

Long-Term Value for Austin Homeowners

This project demonstrates the value of comprehensive exterior upgrades using premium materials engineered for Central Texas conditions. The James Hardie siding carries extensive warranty coverage and requires minimal maintenance compared to traditional materials, while the aluminum windows resist the seal failure and frame degradation common with other window types.

The combination of professional installation, premium materials, and attention to detail ensures decades of reliable performance. For Austin homeowners considering exterior upgrades, this project showcases how proper material selection and expert installation create lasting value and improved home performance in our challenging climate.

Why Choose Professional Installation

The complexity of this project – involving structural modifications, multiple material systems, and precise weatherproofing – highlights why professional installation matters. Our team's experience with Austin-specific challenges, from limestone soil foundation movement to cedar pollen exposure, ensures installations that perform reliably year after year.

The three-month timeline from approval to completion reflects careful project management and coordination between specialized trades, resulting in superior outcomes that DIY approaches simply cannot achieve.

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HERE sOME OF THE PROJECT IMAGES

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