Building a modern farmhouse on a hillside presents unique challenges that test the skill of even experienced construction teams. The TOH 2020 Farmhouse in Fairfield County, sited on a slope overlooking Long Island Sound, is a showcase of how advanced building materials and smart design strategies come together to create a home that is both beautiful and structurally sound. From the engineered lumber systems to the coastal-ready roof, every element of this project offers lessons for builders and homeowners alike. For more insight into how farmhouse specifics are handled, our guide on window selection for the Farmhouse in Fairfield County covers the Marvin window package chosen for the project.
Foundation and Site Preparation for Hillside Farmhouse Construction
Building on a sloped lot requires careful planning that flat-site construction does not. The foundation must be designed not only to support the structure but also to manage water flow, prevent erosion, and integrate aesthetically with the natural terrain.
Excavation and Soil Considerations on Sloped Terrain
The first step in any hillside build is a thorough geotechnical evaluation. Soil composition, load-bearing capacity, and groundwater levels all influence foundation design. On the Fairfield site, the builders had to account for the hillside orientation toward Long Island Sound, which meant managing both surface runoff and deeper groundwater movement.
Drainage Planning for Hillside Sites
Proper drainage is critical on sloped lots. Key techniques used in this project include:
- Perimeter drainage systems at the base of the foundation to redirect subsurface water
- Graded swales that channel surface runoff away from the structure
- Waterproof membrane applications on below-grade foundation walls
- Gravel backfill with perforated drain pipes to relieve hydrostatic pressure
Each of these measures works together to keep the below-grade portions of the foundation dry, preventing long-term moisture damage to the structure.
Above-Grade Foundation Details and Stone Veneer Cladding
One of the distinguishing features of the TOH 2020 Farmhouse is that the above-grade portion of the concrete foundation is clad with stone veneer. This technique serves two purposes: it protects the concrete from weather exposure, and it visually anchors the house to the hillside, creating the appearance that the structure grew naturally out of the land.
The stone veneer selection process focused on:
- Weather resistance for coastal freeze-thaw cycles
- Color matching to the local stone palette of Fairfield County
- Weight considerations to ensure the veneer could be supported without additional structural reinforcement
- Installation method using a rainscreen gap to allow moisture to drain behind the stone
Advanced Framing Systems for Modern Farmhouse Durability
The framing package for the Fairfield farmhouse relies heavily on engineered wood products, which offer superior dimensional stability compared to traditional dimensional lumber. This is especially important in a coastal environment where humidity fluctuations can cause wood to warp, twist, or shrink.
Engineered Lumber Solutions for Heavy Loads and Long Spans
The project uses Microllam LVL (laminated veneer lumber) beams from Weyerhaeuser as the primary structural support for the first floor. LVL beams are manufactured by bonding thin wood veneers together under heat and pressure, creating a product that is stronger and more uniform than sawn lumber.
LVL Beam Performance Characteristics
LVL provides several advantages in residential construction:
- Higher load-bearing capacity per pound than solid lumber
- Resistance to warping, splitting, and shrinking over time
- Available in longer lengths for open floor plan designs
- Consistent quality with no knots or defects
For the barn wing of the farmhouse, the builders chose TimberStrand LSL (laminated strand lumber) studs. These are made from compressed wood strands and are ideal for walls where pocket doors demand dead-straight, twist-free framing. LSL studs maintain their straightness even in the humid coastal climate, ensuring that doors and windows operate smoothly for the life of the home.
Floor Systems Engineered for Stability
The floor assembly uses TJI floor joists from Weyerhaeuser, set 16 inches on center. These engineered I-joists are lightweight compared to solid lumber, which speeds installation, but they deliver exceptional stiffness. The result is a floor system that resists the bounce and squeak that often plague traditional wood-framed floors.
Over the joists, Diamond Premium OSB floor panels provide the subfloor. These panels feature a self-draining technology that proved especially useful during the wet winter build. The tongue-and-groove edge profile allows the panels to lock together tightly, creating a smooth, stable base for the white oak flooring that will go on top.
Envelope Protection: Sheathing, Windows, and Roofing
A building envelope is only as strong as its weakest link. The Fairfield farmhouse uses a coordinated system of sheathing, windows, and roofing that works together to keep water out while allowing the structure to breathe.
Insulation-Backed Sheathing and Comprehensive Air Sealing
The entire structure is wrapped in ZIP System sheathing, an engineered panel that combines structural sheathing with a built-in water-resistive barrier. The seams are taped with specialized ZIP System tape, creating a continuous air and water seal around the entire building. On the screened-in porch area, which will eventually house an outdoor kitchen, the same system is used to protect the interior until the space is finished.
Smart Skylights and High-Performance Windows
The farmhouse features VELUX No Leak solar-powered Fresh Air skylights. These units include rain sensors that automatically close the skylight at the first sign of bad weather, protecting the interior even when the homeowners are away. The solar power eliminates the need for wiring to each skylight, simplifying installation.
Windows throughout the house are Marvin Signature Ultimate Casement units. These windows include a specialized wash mode that allows both sides of the glass to be accessed from indoors, making cleaning upper-floor windows much safer. For a deeper look at how the farmhouse window package was chosen, see our coverage of Marvin windows in the Fairfield farmhouse.
Coastal-Ready Roofing Materials
The roof uses GAF Timberline American Harvest architectural asphalt shingles in Appalachian Sky color. These shingles are warranted to withstand the highest wind speeds, a critical consideration for a coastal property exposed to nor’easters and tropical storms. The roofing assembly sits over ZIP System sheathing, completing the continuous barrier from foundation to ridge.
| Building Component | Product Used | Key Benefit |
|---|---|---|
| Sheathing & WRB | ZIP System | Continuous air and water barrier with taped seams |
| Structural Beams | Microllam LVL by Weyerhaeuser | Splits-resistant, high load capacity, long spans |
| Floor Joists | TJI Joists by Weyerhaeuser | Lightweight, squeak-free, dimensionally stable |
| Subfloor | Diamond Premium OSB Panels | Self-draining technology, tongue-and-groove edges |
| Skylights | VELUX No Leak Solar Powered | Rain sensor auto-close, solar powered operation |
| Windows | Marvin Signature Ultimate Casement | Wash mode for safe cleaning, coastal-grade durability |
| Roofing | GAF Timberline American Harvest | High wind warranty, impact resistant |
| Exterior Trim & Siding | LP SmartSide | Hail, moisture, fungal decay and termite resistance |
Design Elements That Define the Modern Farmhouse Aesthetic
Beyond the technical construction systems, the TOH 2020 Farmhouse succeeds because of the design choices that give it authentic farmhouse character while meeting modern performance standards.
Board and Batten Siding with Engineered Wood
The exterior of the barn wing uses 12-inch-wide boards with 2.5-inch battens made from LP SmartSide. This engineered wood product offers the appearance of traditional wood siding with dramatically better durability. It resists hail damage, moisture penetration, fungal decay, and termite attack. In a coastal setting where salt air accelerates deterioration of natural wood, this engineered alternative delivers the farmhouse look without the maintenance burden.
The board and batten profile is a classic farmhouse element that creates strong vertical lines, making the structure appear taller and more substantial. The material selection also supports the farmhouse aesthetic explored in our article on easy-to-maintain siding for the Farmhouse in Fairfield County.
Barn-Inspired Architectural Details
The farmhouse includes several design elements that reference traditional agrarian buildings:
- A cupola at the peak of the front barn section, providing ventilation and visual interest
- Wide, covered porch areas that transition between indoor and outdoor living spaces
- A plunge pool adjacent to the porch, echoing the utilitarian outdoor features found on working farms
- Generous window openings that maximize the Long Island Sound views while maintaining the simple massing of traditional farm buildings
The living spaces are organized to support indoor-outdoor flow, with the screened-in porch acting as a transitional zone between the kitchen and the outdoor landscape. This layout is a hallmark of modern farmhouse design, where the house does not turn its back on the site but instead embraces it. For ideas on how to furnish these open-concept spaces, our guide on furniture placement for the modern farmhouse in Fairfield County offers practical strategies for creating comfortable, functional rooms.
A hillside farmhouse like this one demands careful coordination between structural engineering and architectural vision. The foundation must be excavated and poured to exacting standards, the framing must resist the forces of wind and gravity, and the envelope must seal out one of the harshest coastal climates on the East Coast. The TOH 2020 Farmhouse accomplishes all of this while preserving the warm, inviting character that makes farmhouse style so enduring. Builders and homeowners considering similar projects can learn a great deal from the material choices and construction methods used here, from the engineered lumber floor systems to the smart skylights that protect the home when no one is around.
For those interested in the foundation work that supports projects of this scale, our complete guide on how prefabricated foundation walls are poured and installed covers the methods that make hillside builds both feasible and durable.