Why choose Avenir Renovations?
Why renovate your attic now?
- Living space: value unused square meters to create a bedroom, an office, or a master suite.
- Comfort & energy: effective roof insulation reduces heat loss and summer overheating.
- Property value: a well-fitted space under the eaves enhances attractiveness when reselling.
- Function: separate day/night areas, create a quiet telecommuting corner, add built-in storage.
The 5 steps of your attic renovation
At Avenir Rénovations, each attic fit-out project in Namur follows a structured method to combine comfort and durability. From the first visit to the handover, each step is carried out with care for an optimal and harmonious result.
The essential technical points in attics
We remain accessible in our language while integrating the essentials to convince Google… and reassure you.
Insulation is the heart of a successful attic renovation. We install suitable insulators (mineral wool/wood, PIR, etc.) in two crossed layers when the configuration allows, with continuous vapor barrier and watertight joints. The goal: a good energy performance, less heat loss in winter, and real summer comfort (limit overheating). Thermal bridges (eaves, rafters, hatches) are treated with care.
Without air tightness, the insulation loses part of its effectiveness. We ensure the continuity of the vapor barrier (adhesives, sleeves, specific strips) around the penetrations (spots, ducts, roof frames), and we properly seal the Gyproc/Fermacell joints.
A space under the roof must be ventilated to evacuate humidity and pollutants. Depending on the project: simple or double flow VMC, or at least spot extractions in the bathroom. The flows are sized; the networks remain accessible for maintenance.
We create or replace roof frames (Velux/Fakro equivalents) with blinds/shutters if needed, and study the possibility of a dormer to gain height and light. The supports, connections and flashings are installed according to the rules for perfect water tightness.
Before fitting out, we check the structure (joists, span, loads). If necessary: reinforcements, acoustic leveling, resilient underlays and dry screeds. You gain in comfort (limited impact noise) and safety.
Creating an opening involves temporary shoring and reinforcements. We design a comfortable staircase (straight, quarter-turn, spiral if constraints), with compliant handrails. Access becomes practical and safe.
- Electricity: circuits according to RGIE, well-placed outlets/lighting (indirect lights, recessed/track), possible data for remote work.
- Heating: low-temperature radiators or underfloor heating if the structure allows; alternatively, split air/air (heating/cooling) in an insulated envelope.
Gyproc/Fermacell partitions (waterproof in wet areas), niches and custom storage in the eaves, doors, paint finishes suitable for attics. The goal: clean lines, neat connections and comfortable daily use.
Price of an attic renovation in Namur
Budgets depend on the area, the condition of the roof, the structure, openings, and finishes. Price indications including VAT:
| Item | Price indication (including VAT) |
| Turnkey attic fit-out (excluding bathroom), per m² | 600 to 1,200 €/m² |
| Internal roof insulation (supply + installation) | 40 to 90 €/m² |
| Vapor barrier + air tightness (per m²) | 10 to 25 €/m² |
| Roof windows (supply + installation, standard size) | 650 to 1,200 € / unit |
| Dormer (structure + window + waterproofing, depending on size) | 3,500 to 9,500 € |
| Creation of opening + wooden stairs | 2,000 to 5,500 € |
| Floor reinforcements / acoustic leveling | 35 to 90 €/m² |
| Partitions + linings (Gyproc/Fermacell), per m² | 45 to 95 €/m² |
| Electrical work (circuits, lighting, outlets – attic) | 1,200 to 3,000 € |
| Mechanical ventilation / spot extraction attic | 500 to 2,500 € |
| Bathroom under the roof (shower + WC + furniture) | 5,500 to 12,000 € |
| Painting finishes (preparation + 2 coats), per m² | 18 to 35 €/m² |
| Floor coverings (laminate/LVT), per m² | 35 to 85 €/m² |
Note: a precise quote always follows a visit. We offer variations (insulation, roof windows, stairs, finishes) to respect your budget without sacrificing performance or durability.
3 fit-out scenarios under the eaves
Master suite with shower room
Bedroom + dressing room + walk-in shower (or ultra-flat shower tray) + wall-mounted toilet. We manage the SPEC waterproofing, air extraction, thermostatic faucets, and tiling layout for an elegant finish.
Office / remote work space
Brightness, data outlets, enhanced acoustics, stable temperatures. We plan for blackout/heat-reducing blinds on roof frames and integrated storage solutions.
Playroom / children's room
Durable coverings, protected corners, secure lighting, proper ventilation for healthy air, effective blackout for napping.
The advantages of working with Avenir Rénovations
- Single point of contact (structure, insulation, roof frames, MVHR, electricity, plumbing, finishes).
- Local contractors familiar with Namur buildings (1930s houses, 1970s-90s, recent housing).
- Transparent quotes: technical options (insulation, roof frames, stairs), phased schedule.
- Quality control: checklists, progress photos, staged receptions.
- Belgian standards respected: PEB, RGIE, compliant ventilation, waterproof wet rooms.
- Careful finishes: clean cuts, regular joints, precise cladding, custom storage.
Local procedures and urban planning (Namur)
- Interior: the internal fit-out of the attic generally does not require a permit.
- Exterior aspect: creating a dormer, modifying the roof or facade may require a declaration or a permit. We guide you through the procedures and prepare a clear file (plans, sections, photos).
- Co-ownership: in an apartment (top level), agreement from the property manager/AG if the roof or facade is impacted (visible roof frames).
Common issues in attics: our response
Overheating in summer under the roofs
We combine appropriate insulation, solar protection (external blinds, glazing), ventilation, and, if necessary, a split air/air. The result: a usable room even during heat peaks.
Limited height and sloping ceilings
We select thin high-performance partitions, optimize the position of furniture, integrate custom shelves, and, if relevant, consider a dormer to gain useful height.
Impact noise (floor)
Resilient underlays, dry screeds, perimeter strips... Everything to reduce noise to the lower floor and make usage more pleasant.
FAQ – Attic Renovation
Can I create a bathroom in the attic?
Yes, provided you manage water and air: inlets/outlets, SPEC waterproofing in the shower, effective extraction, continuous vapor barrier, and compatible insulation in wet areas. The slope of the outlets and the ceiling height guide the placement of sanitary fixtures (shower under the slope, toilet next to the ridge). We validate the feasibility during the visit.
Do I need an architect for an attic renovation?
Not necessarily. If we modify the structure (dormer, large openings), the exterior appearance, or if the project is substantial, the intervention of an architect/engineer may be required. We guide you and coordinate if necessary.
How long does it take to fit out an attic?
For an attic of 20 to 35 m², generally count on 3 to 6 weeks depending on complexity: insulation/vapor barrier, roof frame/dormer, opening + staircase, networks (electricity/ventilation/possible plumbing), partitions/finishes. A phased schedule is provided with milestones and progress points.
What are the priorities if my budget is tight?
- Insulation & air tightness (this is the basis of comfort and savings),
- Openings (light and ventilation),
- Heating/ventilation,
- Finishes.
We offer alternatives (insulation, coverings, staircase solutions) to stay within budget without giving up on essentials.
Do roof frames cause heat leaks?
A well-installed modern roof frame with sealing and compliant connections offers excellent performance. We choose the appropriate glazing (thermal/acoustic/solar), ensure air and water tightness, and plan shading to manage sunlight. Comfort is significantly improved compared to an old poorly insulated skylight.
Do you want to convert your attic in Namur?
Benefit from a clear study, a detailed quote, and a careful execution by local craftsmen.
Contact Avenir Rénovations Namur to transform your attic into a comfortable, bright, and durable space.
Agency Avenir
Rénovations
for Attic renovation in Namur
An expert to take charge of your renovation projects and guarantee deadlines, budgets and quality of all services.
Attic renovation in Namur and everywhere in France
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- Installation and replacement of frames in Namur
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- Insulation work in Namur
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- Attic insulation in Namur
- Roof renovation in Namur
- Interior floor covering in Namur
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