Which wood is best for islands?

Iroko ('African Teak') - its natural oils make it virtually waterproof and impervious to salt.

Which wood offers the best thermal insulation?

Softwood (Pine/Spruce) - less dense, lower λ, traps more air in its cells.

Wood Species for Windows: Oak, Meranti, Pine, Spruce or Iroko? A Selection Guide

You've made the big decision: you want the warmth, luxury and top natural thermal insulation that modern wooden windows offer. You request quotes and suddenly face a new dilemma. The quotes list different wood species, with dramatic price differences.

"Should I go with cheap Pine or will it rot? Is it worth paying double for Oak? And what exactly is Meranti that everyone recommends?"

Choosing the right wood isn't only about aesthetics and grain. It's a decision that must be based on the microclimate of your area and your available budget. As timber specialists, we created the ultimate guide to help you understand the differences between Softwood and Hardwood.

1. Softwood vs Hardwood

Before analysing the species, we need to understand the basic distinction in the timber industry:

Softwood (e.g. Pine, Spruce): From fast-growing conifers. Lighter, with better thermal insulation (lower U-value because it is less dense) and more affordable. However, more susceptible to surface impacts.

Hardwood (e.g. Oak, Iroko): From slow-growing broadleaf trees. Extremely dense, heavy and "hard as stone". Offers unmatched durability over time and resistance to impacts, but is slightly inferior in thermal insulation compared to softwood and costs significantly more.

Note: In modern windows ALL species are now processed as glued laminated timber (Glulam), so the risk of warping has been completely eliminated regardless of the species you choose.

Softwood vs hardwood - basic distinction

2. The 4 Dominant Wood Species in Greece

🌲 Pine & Spruce (The Affordable Energy Solution)

Pine and Spruce form the backbone of the wooden window industry in Northern Europe. They have the lowest thermal conductivity coefficient, offering absolute thermal insulation. They are light (less stress on hardware) and the most affordable option. They also accept opaque finishes excellently (e.g. if you want your windows white or grey). However, they are softer on the surface. Heavy impacts (e.g. from hail or carelessness) may leave marks. They require more regular coating maintenance.

Ideal for: Highland areas, Northern Greece and budget-conscious projects seeking maximum thermal performance (e.g. Passive Houses).

🌿 Meranti (The "Exotic" Value for Money)

Meranti comes from Southeast Asia. It is perhaps the most commercially popular wood for windows in Greece, as it bridges the gap between softwood and hardwood. It offers excellent stability and very good moisture resistance. It has beautiful grain and a slightly reddish hue (often reminiscent of the expensive Mahogany). It is harder than Pine, yet remains very affordable. However, its quality varies depending on origin. You must demand "Heavy Meranti" (high density, >500 kg/m³), otherwise you risk getting a very spongy wood.

Ideal for: The majority of homes - the sweet spot between durability, beauty and cost for the Mediterranean climate.

🏛️ Oak (The King of Durability)

Oak is synonymous with sturdiness and European tradition. It is a hardwood that exudes prestige. Incredibly durable against mechanical stress, wear and fungi. Its grain is classic, bold and imparts unmatched luxury, especially when finished with transparent impregnation varnishes. Very heavy wood (requires exceptionally heavy-duty hardware) with high purchase cost. Due to its density, it has slightly lower thermal insulation than Pine.

Ideal for: Premium villas, listed buildings, luxury renovations and any home where aesthetic superiority and decades-long lifespan are the sole priorities.

🌴 Iroko / Teak (The Moisture Warriors)

Iroko (often called "African Teak") is a hard, exotic timber with a unique superpower: its natural oils. Thanks to the natural resins and oils it contains, Iroko is virtually waterproof and impervious to insects and rot. It is the ultimate shield against salt and humidity. Very high purchase cost. Additionally, under UV exposure its colour tends to darken over the years. Cutting and bonding it is difficult due to the oils, requiring excellent expertise from the factory.

Ideal for: Seaside homes on the islands (Aegean / Ionian) and houses literally "on the wave".

Iroko - the ultimate choice for seaside homes

3. In Summary: What to Choose

If your priority is economy and top insulation, choose Pine.

If you seek the sweet spot (durability, beauty and reasonable cost), Meranti will not disappoint.

If your home is on an island battered by salt, investing in Iroko is the only way.

If you want ultimate prestige and timeless durability, the "king" Oak is your choice.

💡 Key Takeaway: Choose your wood based on climate, budget and aesthetic preferences - always in glued laminated (Glulam) form.

Modern Wooden Windows: The Technology Behind the Tradition Thermal Insulation & Wood: The "King" of Natural Insulating Materials Wooden Windows for Listed Buildings & Traditional Settlements: Regulations Wooden Window Maintenance: Myths, Cost & Frequency

Frame Materials & Finishes for Windows & Doors

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