What grants are available based on the type of work to be done?

Insulation Work: The Most Generous Aid

Roof Insulation

Roof insulation is one of the most subsidized areas, as it allows for immediate energy savings. It is accessible to all income categories, with or without an audit (in Wallonia).

Indicative amounts:

• Wallonia: from 20 to 120 €/m² depending on income category
• Brussels: from 25 to 60 €/m² depending on income and neighborhood
• Possible bonus for using bio-sourced insulation (up to +50 %)

Technical conditions:

• Thermal resistance R ≥ 5 m²K/W
• Carried out by a certified contractor
• 6 % VAT applicable (if building > 10 years)

Wall Insulation

The grants cover:

• External insulation (render on insulation, cladding)
• Internal insulation (panels, lining)
• Cavity wall insulation (injection)

Indicative amounts:

• Wallonia: from 8.8 to 52.8 €/m²
• Brussels: from 20 to 55 €/m²

Note: external insulation is often more expensive but also more efficient, leading to higher grants.

Floor and Floor Insulation

This area is often overlooked but very useful for ground floors and basements. The grants cover:

• Insulation on slab
• Insulation under floor
• Insulation between unheated levels

Indicative amounts:

• Wallonia: 6 to 36 €/m²
• Brussels: 15 to 45 €/m²

Heating: Aid to Modernize Your Equipment

Heat Pumps

Heat pumps are highly encouraged for their high energy efficiency. Several models are eligible:

• Air/water
• Ground/water (geothermal)
• Hybrid with gas boiler

Indicative amounts:

• Wallonia: up to 3,600 €
• Brussels: up to 4,500 €

Conditions to be met:

• Certified installer (Qualiwall in Brussels)
• Minimum performance coefficient
• Device listed among eligible models

Biomass Boilers

Boilers or pellet stoves are also eligible for aid, provided they meet emission standards.

Indicative amounts:

• Wallonia: up to 4,320 €
• Brussels: up to 3,000 €

Grants are higher for central systems than for local devices.

Solar Water Heaters

These systems produce hot water from solar energy and are eligible in both Regions.

Indicative amounts:

• Wallonia: up to 2,520 €
• Brussels: up to 3,500 €

Ventilation: A Often Overlooked Requirement

Installing a controlled mechanical ventilation (CMV) system is essential to ensure good indoor air quality in a well-insulated home.

Types of systems covered:

• Centralized single flow
• Double flow with heat recovery

Indicative amounts:

• Wallonia: up to 4,080 €
• Brussels: up to 3,000 €

Technical criteria:

• Minimum efficiency of 78 %
• Automatic ventilation management
• Installation by a certified professional

Exterior Joinery: Aid for Your Frames

The replacement of frames, windows, and glazing is eligible for aid, provided minimum thermal performance standards are met.

Minimum conditions:

• Uw ≤ 1.50 W/m²K
• Ug ≤ 1.10 W/m²K
• Installation by a registered company

Indicative amounts:

• Wallonia: up to 156 €/m²
• Brussels: up to 250 €/m²

Advice: grants are calculated per square meter of glazing replaced. It is therefore important to specify the area accurately in your quotes.

Electricity, Gas, and Sanitation: Interventions Covered as Well

Electrical or Gas Compliance

In Wallonia, these works are eligible for aid if the installation is outdated or dangerous.

Amounts:

• Electricity: up to 1,920 €
• Gas: up to 840 €

In Brussels, these works can be integrated into a global project through RENOLUTION grants.

Moisture or Radon Treatment

The following interventions may be aided:

• Drying of walls
• Treatment of rising damp
• Elimination of radon or dry rot

Indicative amounts:

• Wallonia: between 140 € and 1,000 € depending on area and technique
• Brussels: one-off aids depending on the type of treatment

Roof, Facade, and Structure: Heavy Works are Also Aided

Replacement of Roof Covering

This area is aided in Wallonia even without a housing audit. It is often accompanied by an insulation component.

Indicative amounts:

• Replacement covering: up to 24 €/m²
• Reinforcement of framework: up to 600 €

Facades and Walls

Some external works...