Insulation work in Namur

Air tightness & ventilation: the essential duo

Insulating without ensuring air tightness means losing part of the benefit. We ensure:

• Continuous sealing (membranes, strips, sleeves) at frame/wall connections, hatches, ducts.
• Blower door test possible to control and correct.
• Adapted ventilation (extraction of humid rooms, single flow or double flow), with calibrated flows and sealed networks. Result: healthy air, no trapped humidity, stable performance.

Common materials and uses

• Rock wool / glass wool: versatile, good performance/price ratio, widely used in sloped roofs and partitions.
• PIR / PUR: high performance for low thickness (roofs, technical linings).
• Cellulose / wood fibers: summer comfort, hygro regulation, suitable for sloped roofs and attics.
• EPS / XPS: floors, facades (ETICS), flat roofs depending on systems.
• Cork (more technical): thermal/acoustic corrector in specific areas.

Frequent issues in Namur: our method

Humidity and brick facades

We diagnose rising damp, porous joints, hollow or solid walls. Treatment (drainage, barrier, repointing) may precede insulation. Indoors, we use compatible systems to avoid interstitial condensation.

Houses built before 1990

Often: poorly insulated roofs, hollow or single walls, aging frames, insufficient ventilation. We propose a logical pathway: roof → walls → frames → ventilation → heating adjustments.

Co-ownership and apartments

Targeted interior insulation, acoustic treatments, coordination with property management if the facade or frames are involved. Careful logistics (protection of common areas, time slots).

The advantages of working with Avenir Rénovations

• Clear prioritization : roofing first, then walls/floors, ventilation and finishes.
• Local contractors skilled in Namur construction (brick, blocks, slate/tile roofs).
• Transparent quotes : technical variations, pricing by lots, phased schedule.
• Controlled quality : checklists, photos, blower door possible, staged receptions.
• Multi-trade coordination : insulation, frames, MVHR, plastering/painting, electricity.
• After-sales service and maintenance advice (ventilation, MVHR filters, periodic checks).

Local procedures, EPC and grants (Wallonia / Namur)

Depending on the scope and external impact (facade, roofing), a declaration or a permit may be required: we will inform you. Regarding EPC, we document the work (technical sheets, implementation photos) so that the gains are recognized.

In Wallonia, insulation (roof, walls, floors) and ventilation often fit into a structured renovation journey (audit recommended/necessary depending on the case, supporting documents). The amounts and conditions depend notably on the income category and the achieved performances. We guide you to the right documents (detailed quotes, photo evidence, material specifications) and to public contacts (Energy Desks, municipal services). The goal: maximize the aids when applicable, without complexity for you.

FAQ – Insulation in Namur

Insulation from the inside or outside: what to choose?

The inside is quick and budget-flexible, ideal room by room or in an apartment. However, it is important to ensure airtightness and address connections to avoid condensation. The outside (ETICS) offers the most homogeneous performance: we treat the facade, eliminate many thermal bridges, and give a new appearance. It is the preferred solution during an external renovation; it sometimes requires permissions. We compare the two scenarios for your house and street (aesthetics, budgets, timelines).

Are hollow walls (injection) always insulatable?

No. It is necessary to check the presence and width of the cavity, the condition of the joints, and the absence of moisture. When possible, injection offers an excellent cost/gain ratio and a quick project. We conduct surveys and choose the insulation material (EPS beads, wool, foam) based on the wall and the expected durability.

Can insulation create condensation or mold?

If poorly installed, yes. That is why we ensure the continuity of the vapor barrier and air tightness, and check the ventilation (flows, dampers, sealed networks). With these precautions, insulation improves the housing: warmer walls, less condensation, healthier air.

Should I insulate before changing heating systems (heat pump, boiler)?

In the vast majority of cases, yes. Insulating before allows for reducing the required power, opting for low-temperature emitters, and obtaining a simple and comfortable system. We build a priority plan to avoid “backward” expenses.

Can I live in the house during insulation work?

Yes, very often. Interventions by zones (attics, basement ceiling, interior cladding) are phased to limit dust and noise. For an insulating facade, we organize access, protections, and a schedule compatible with your daily life.

Do you have an insulation project in Namur?

Benefit from a clear study, a detailed quote, and a careful installation by local teams.

Contact Avenir Rénovations Namur to start your insulation work and gain comfort all year round.