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Writer's pictureTony Van Vliet

CHOOSING MATERIALS FOR A COASTAL HOME EXTERIOR? These are Your Best Investment


Building or renovating a beach/near beach house requires careful consideration of materials, especially for the exterior. The coastal environment is both beautiful and harsh, with salt air, moisture, intense sunlight, and strong winds posing challenges to the longevity and appearance of your home. To protect your investment, it’s important to select materials that can withstand the harsh conditions, requiring less maintenance, and offering greater resistance to the elements. Here’s a guide to the best materials to use for your beach house exterior to ensure it remains both stunning and durable for years to come.


1. Fiber Cement Siding

Fiber cement siding is an excellent choice for beach house exteriors. Made from a mix of sand, cement, and cellulose fibers, this material is incredibly durable and resistant to salt air, moisture, and insects. It can mimic the look of wood, stucco, or even stone, allowing for versatile design options. Additionally, fiber cement siding is fire-resistant and can withstand high winds, making it a safe and practical option for coastal homes.

Pros:

  • Highly durable and long-lasting

  • Resistant to moisture, insects, and fire

  • Low maintenance

  • Available in various textures and finishes

Cons:

  • Heavier and more challenging to install

  • Higher upfront cost compared to some other materials

 

2. Cedar Shingles

Cedar shingles are a classic choice for beach house exteriors, offering a timeless, rustic charm that complements the natural surroundings. Cedar is naturally resistant to decay and insects, and it weathers beautifully, developing a silvery-gray patina over time. While cedar requires more maintenance than some other materials, the aesthetic appeal and natural resilience make it a popular choice for beach homes.

Pros:

  • Natural resistance to decay and insects

  • Aesthetic appeal with a classic, coastal look

  • Ages gracefully with a beautiful patina

Cons:

  • Requires regular maintenance, including staining or sealing

  • Can be susceptible to mold and mildew in high humidity areas

 

3. Vinyl Siding

Vinyl siding is a cost-effective and low-maintenance option for beach house exteriors. Modern vinyl siding comes in a wide range of colors and styles, some of which can mimic the appearance of wood or shingles. It’s resistant to moisture and salt, making it suitable for coastal environments. However, vinyl can become brittle in extreme cold and may fade over time due to sun exposure.

Pros:

  • Affordable and widely available

  • Low maintenance

  • Resistant to moisture and salt

Cons:

  • Can fade or crack over time

  • Not as durable as fiber cement or wood

  • Limited ability to be repaired or refinished

 

4. Aluminum or Steel Roofing

When it comes to roofing for a beach house, metal options like aluminum or steel are among the best. These materials are incredibly durable, resistant to corrosion, and can withstand the strong winds common in coastal areas. Metal roofing also reflects sunlight, helping to keep the interior of the house cooler during hot summer months. Additionally, metal roofs are fire-resistant and can last for many decades with minimal maintenance.

Pros:

  • Extremely durable and long-lasting

  • Resistant to corrosion, moisture, and fire

  • Energy-efficient by reflecting heat

Cons:

  • Higher upfront cost

  • Can be noisy during rain or hail unless properly insulated

 

5. Composite Decking

For outdoor living spaces like decks and patios, composite decking is a smart choice. Made from a blend of wood fibers and plastic, composite decking is highly resistant to moisture, rot, and insect damage, which are common concerns in coastal areas. It also requires less maintenance than traditional wood decking and comes in a variety of colors and finishes that mimic the look of natural wood.

Pros:

  • Resistant to moisture, rot, and insects

  • Low maintenance

  • Long-lasting with a variety of design options

Cons:

  • Can be more expensive than wood

  • May become hot to the touch in direct sunlight

 

6. PVC Trim and Molding

PVC (Polyvinyl Chloride) trim and molding are excellent alternatives to wood for a beach house exterior. PVC is impervious to moisture, salt, and insects, making it ideal for the harsh coastal environment. It’s also easy to work with, can be prefinished or painted, and is available in a wide range of styles. PVC trim and molding won’t warp, rot, or crack, ensuring a crisp, clean appearance for your beach house over time.

Pros:

  • Completely resistant to moisture, salt, and insects

  • Low maintenance and durable

  • Versatile and easy to work with

Cons:

  • More expensive than wood trim

  • Limited in color options unless painted

  

Materials to Avoid in a Beach House Exterior

Choosing the wrong materials for your beach house exterior can lead to rapid deterioration, increased maintenance costs, and a shorter lifespan for your home. Here’s a guide to materials you should avoid on a beach house exterior.


Wood Siding (Without Proper Treatment)

Wood siding is not ideal unless it’s properly treated. Unprotected wood is highly susceptible to rot, warping, and insect damage in a coastal environment. The constant exposure to moisture and salt can cause untreated wood to deteriorate rapidly. Even pressure-treated wood, while more resistant, still requires regular maintenance, such as sealing or painting, to protect it from the elements.


Stucco

Coastal areas are prone to high humidity, salt spray, and strong winds, all of which can cause stucco to crack and deteriorate over time. Once cracks form, moisture can penetrate the surface, leading to mold, mildew, and further structural damage. Repairing stucco can be costly and labor-intensive, making it a less-than-ideal option for a beach house.


Asphalt Shingles

Asphalt shingles are a common roofing material due to their affordability and ease of installation. However, they have a shorter lifespan in salty, windy environments, are prone to damage from storms and flying debris, and require frequent repairs or replacement. They don’t offer the same level of durability or protection as metal or tile roofing.


Iron or Uncoated Steel

Metal elements such as railings, gates, and light fixtures can add a sleek, modern touch to your beach house, but iron or uncoated steel should be avoided. In coastal areas, the high salt content in the air accelerates the rusting process, leading to unsightly corrosion and structural weakness. Even with regular maintenance and protective coatings, it can be difficult to keep iron and steel from rusting.


Brick and Mortar

Though durable, the salt and moisture in the air can penetrate the porous surface of brick, leading to efflorescence (salt deposits) and deterioration over time. Mortar joints are particularly vulnerable to cracking and erosion in coastal environments, which can compromise the structural integrity of the wall. Over time, bricks can become discolored and require significant maintenance to keep them looking good.


Standard Untreated Plywood

Standard plywood is particularly vulnerable to moisture, leading to warping, delamination, and rot. Even though some plywoods are treated to resist moisture, they still may not hold up well in the long-term against the constant exposure to salt air and humidity in a coastal environment.


Concrete (Without Proper Sealing)

Concrete is often used in coastal construction for its strength and durability, but if it’s not properly sealed, it can be problematic. The porous nature of concrete allows saltwater to penetrate, leading to corrosion of any embedded steel reinforcement. Over time, this can cause cracking and spalling (flaking of the concrete surface), which can significantly weaken the structure. Proper initial sealing and regular maintenance are essential.

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Considering a custom home or remodel? Contact VAN VLIET architecture | design for a complimentary consultation!


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