Insulation work in Charleroi

Our insulation services

–  Complete thermal diagnosis of the home before any cost estimation

–  Roof, attic, and sloping roof insulation

–  Wall insulation from the inside, outside, or by injection

–  Floor and inter-floor insulation

–  Replacement of old joinery with high-performance models

Process of an insulation project

The thermal diagnosis identifies priority areas of heat loss before proposing a detailed cost estimate tailored to the available budget.

Work usually begins with the roof, the most cost-effective area, before addressing the walls and joinery according to the priorities identified during the diagnosis.

A complete insulation project lasts from a few days for a single area to several weeks for a comprehensive energy renovation of the building's envelope.

Insulation from the inside or outside: which choice?

Internal insulation

Less expensive and quicker to implement, it slightly reduces the living space of the affected rooms. It is particularly suitable for controlled budgets and facades whose exterior appearance must be preserved, especially in protected building areas.

External insulation

More costly, it eliminates almost all thermal bridges and preserves the entire interior living space. It is often accompanied by a complete facade renovation, providing an opportunity to refresh the building's exterior appearance at the same time.

The order of work, a matter of common sense

Insulating walls before addressing a leaking roof remains a common mistake: the moisture that seeps in ultimately degrades the freshly installed insulation, negating the benefits of the investment made.

A comprehensive diagnosis allows for establishing a coherent order of priority, addressing waterproofing issues first before investing in effective insulation that should last for several decades without needing repairs.

Regulations and grants in Wallonia

Insulation work is eligible for housing grants from the Walloon Region, with amounts varying according to household income and the type of work performed.

A reduced VAT rate of 6% also applies for a home occupied for more than ten years, and a prior energy audit is often necessary to maximize available assistance.

Why choose Avenir Rénovations for your insulation

A comprehensive thermal diagnosis

Each project starts with a detailed analysis of heat loss areas to prioritize the most cost-effective work according to your configuration and available budget.

Support for available grants

We guide you towards the applicable Walloon schemes for your project to optimize the amount of aid received without complicated procedures on your part.

High-performance and durable materials

We select insulators that comply with current PEB standards for measurable results from the first winter following the work done in your home.

Priorities, order of work and impact on bills

The roof is generally the priority and most cost-effective area to start insulation, as it accounts for up to 30% of heat loss in a poorly insulated home, followed by wall insulation and the replacement of old joinery. Insulating before replacing heating is preferable, as it allows for sizing a system that meets the actual needs of the insulated home rather than being oversized. The impact on bills is usually felt from the first winter following the work, with a significant reduction in heating consumption.

Energy audit, installation and accumulation of grants

The need for a prior energy audit depends on the targeted grants: some Walloon aids require it, especially for the most significant work and comprehensive renovations. Self-insulating certain areas remains technically possible for simple zones like lost attics, but professional installation ensures the absence of residual thermal bridges. Grants for different insulation areas can also be accumulated under certain conditions, depending on household income and the exact nature of the work.

The energy audit, a step not to be overlooked

A prior energy audit precisely identifies the thermal weaknesses of the home and prioritizes work according to their actual profitability, rather than relying on general impressions of the building's condition.

This document often becomes a condition for obtaining certain Walloon grants, particularly for comprehensive energy renovation projects that combine several insulation areas on the same site.

Insulate without neglecting ventilation

A better-insulated house also becomes more airtight, which significantly alters the natural renewal of indoor air. Neglecting ventilation after effective insulation can lead to moisture buildup and a deterioration of the quality of the air breathed daily.

We systematically recommend associating insulation work with considerations on ventilation, whether it is a simple ventilation grille or a more efficient controlled mechanical ventilation system.

Reduce your bills with Avenir Rénovations

Effective insulation remains one of the most cost-effective actions to sustainably reduce your energy bill.

No area of Charleroi is too remote for our teams, with a free thermal diagnosis before any final estimate.

In Gosselies as in other neighborhoods of the Charleroi basin, houses built before the widespread adoption of current insulation standards often have significant savings potential, sometimes several hundred euros a year just by addressing the roof and the walls most exposed to winter cold.

The free thermal diagnosis remains the best way to get a clear view of priorities according to your budget, with no commitment on your part.