What’s the difference between clear Twinwall Polycarbonate and solid Polycarbonate panels?

Choosing the Right Clear Panel for Your Non-Insulated Ekodome

When customizing your Ekodome geodesic dome kit, you’ll often choose between clear twinwall polycarbonate and solid polycarbonate for your dome's transparent sections. Both are durable and UV-resistant, but each serves a different purpose depending on your dome’s function, climate, and lighting needs.

Let’s break down the key differences:

Structure

Twinwall Polycarbonate

• Features two layers connected by internal ribs, creating air pockets

• Lightweight yet strong

• Provides natural thermal insulation

• Ideal for greenhouses or domes in variable climates

Solid Polycarbonate

• A single solid sheet with no air gaps

• Heavier and more rigid

• Offers superior impact resistance

• Perfect for safety glazing, skylights, and panoramic windows

Insulation

Twinwall Polycarbonate

• The internal air channels provide better thermal insulation

• Helps regulate interior temperature

• Best for domes that need passive heat management (like greenhouse domes)

Solid Polycarbonate

• Offers minimal insulation compared to twinwall

• More suitable for visibility than temperature control

Light Transmission

Twinwall Polycarbonate

• Diffuses sunlight evenly

• Reduces glare and hot spots

• Ideal for growing environments and eco domes

Solid Polycarbonate

• Allows direct sunlight and clear visibility

• Better for windows, observation points, or dome houses with scenic views

Weight & Handling

Twinwall Polycarbonate

• Lightweight and easier to install

• Safer to handle for DIY projects

• Available in various thicknesses

Solid Polycarbonate

• Heavier and more rigid

• Requires more support during installation

• Offers robust performance in high-impact areas

Common Applications

Twinwall Polycarbonate:

• Greenhouse roofing

• Skylights

• Partition walls

• Sound barriers

• Signage

• Any non-insulated geodesic dome where insulation and light diffusion are key

Solid Polycarbonate:

• Windows and doors in dome houses

• Safety glazing and machine guards

• Architectural glazing

• Transparent roofs or bay windows in residential domes

• Emergency shelters or impact-prone zones