Wall Insulation

Discover the Best Insulation Option for Your Home

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Did you know that uninsulated walls can be responsible for up to 35% of energy loss in a typical Portuguese home? Whether you're trying to keep the heat in during winter or block the heat out in summer, wall insulation is one of the most effective upgrades you can make.

At EnergyEase, we offer several wall insulation solutions, each carefully selected to suit the structure and needs of your home — and your budget.

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🌬️ 1. Blown-in Wall Insulation – Fast, Clean & Affordable

Our preferred method for most homes is blown-in insulation, where we inject mineral wool or cellulose into the existing wall cavity through small holes drilled in the mortar joints or internal walls.

When is it used?

• Your home has Double walls
  
• You want minimal disruption during installation
  
• You’re looking for a fast and affordable solution
  

Why we love it:

• ✅ Installed in just one or two days
  
• ✅ No interior or exterior demolition required
  
• ✅ Excellent thermal and acoustic performance
  
• ✅ Suitable for most homes built after the 1960s

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🧱 2. Capoto / ETICS – External Wall Insulation

When blown-in insulation isn’t possible — for example, in homes with solid walls or no cavity — we use ETICS (Capoto): a system where EPS, XPS, or mineral wool boards are applied directly to the exterior façade and finished with render.

When is it used?

• Your home has solid exterior walls
  
• The existing cavity is blocked or non-existent
  
• You want to upgrade both insulation and façade appearance
  

Benefits:

• 🌡️ High thermal resistance
  
• 🎨 A fresh, modern look for your home
  
• 🔇 Some soundproofing benefits
  
• 💰 Long-term energy savings
  
• ✅ Compatible with Cascais Green Fund and other subsidies

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🧱 3. Fake Walls – Interior Insulation from the Inside

If external insulation isn't possible (e.g. in shared buildings or heritage zones), we can install fake interior walls with insulation material inside — often mineral wool — to improve both thermal and acoustic comfort from the inside out.

When is it used?

• Blown-in and Capoto aren’t viable
  
• You want to insulate only one side of the home
  
• You live in an apartment or historical building
  
• You need sound reduction between rooms or neighbors
  

Advantages:

• 🔇 Excellent for acoustic insulation
  
• 🎯 Ideal for partial renovations
  
• 🧱 Can be combined with plasterboard finishes
  
• ✅ Fast and clean installation
  

🧰 Which Wall Insulation Is Right for You?

🔹 Blown-in Insulation
Best for homes with double walls (the most common wall type in Portugal).

• Invasiveness: Very low
• Visual impact: None
• Cost: 💰 (most affordable option)

🔹 Capoto / ETICS (External Wall Insulation)
Ideal for solid walls and when you're planning a full façade upgrade.

• Invasiveness: Moderate
• Visual impact: On the exterior only
• Cost: 💰💰💰 (higher investment)

🔹 Fake Walls (Interior Insulation)
Great for sound insulation, shared walls, or partial interior upgrades.

• Invasiveness: Low to moderate
• Visual impact: On interior walls
• Cost: 💰💰 (mid-range solution)

Our team will inspect your walls for free, assess your structure, and explain which system will give you the best comfort, efficiency, and return on investment.