Projects / Namur
Project · Namur · 01/2026 Namur
Namur – Complete renovation: slate roof, PVC windows, roller garage door & stone façade cleaning
- 200 m²Natural slate
- 12 cmPIR insulation
- 12 cmPIR insulation
200 m²Natural slate
12 cmPIR insulation
12 cmPIR insulation
2,5weeks of work
The project 200 m² of natural slate, PVC windows, garage door and façade cleaning
From roof to façade, from windows to garage door – one contractor, one project, one perfect transformation in just 2.5 weeks.
In Namur we carried out an impressive complete renovation that fully transformed this house. We combined a complete 200 m² roof renovation with natural slate, 12 cm of PIR insulation, 3 new VELUX roof windows, replacement of all PVC windows and doors, installation of a roller garage door, professional cleaning of the stone façade and replacement of all gutters and downpipes. The result: a house that looks completely new – finished in just 2.5 weeks!
- Roof renovation – 200 m² of natural slate with PIR insulation
- PVC windows and doors – complete replacement
- Roller garage door – a modern finish
- Stone façade cleaning – a fresh look
How we went about it 3 steps, one point of contact.
Phase 1Week 1 – Roof renovation
Complete removal of the old roof covering · 200 m² of natural slate laid · 12 cm PIR insulation · underlay & vapour barrier · 3 VELUX roof windows installed · waterproofing of junctions
Phase 2Week 2 – Windows, doors & garage door
All PVC windows and doors replaced with triple glazing · new PVC front door · roller garage door installed with electric operation
Phase 3Week 2.5 – Façade cleaning & finishing
Professional cleaning of the stone façade · biocide treatment · joint repairs · replacement of gutters and downpipes · final inspection and handover
What we carried out
Roof renovation – 200 m² of natural slate with PIR insulation
- Complete removal of the old roof covering
- Installation of 200 m² of premium natural slate roofing
- 12 cm of PIR insulation for optimal thermal performance and energy efficiency
- 3 new VELUX roof windows for extra daylight and ventilation
- Waterproofing of all roof junctions (chimneys, roof penetrations)
- Replacement of gutters and downpipes – an entirely new system
- Underlay and vapour barrier for maximum watertight protection
- An improved EPC score thanks to optimal insulation
PVC windows and doors – complete replacement
- All PVC windows and doors replaced with modern high-efficiency glazing
- Triple glazing for optimal thermal and acoustic insulation
- A new PVC front door with burglar resistance and a modern design
- Professional fitting and sealing for optimal airtightness
- An improved EPC score thanks to high-quality glazing
Roller garage door – a modern finish
- Installation of a modern roller garage door with electric operation
- Insulated roller slats for thermal protection of the garage
- Remote control and optional smartphone integration
- A stylish design that perfectly matches the renewed façade
Stone façade cleaning – a fresh look
- Professional cleaning of the entire stone façade
- Removal of moss, algae, dirt and deposits
- Biocide treatment for lasting protection against regrowth
- Joint repairs where needed for a watertight façade
- The house was given a completely fresh, renewed look
The combination of a new slate roof, modern PVC windows, a stylish garage door and a cleaned stone façade has completely transformed this house. The result is impressive: a home that looks brand new, while keeping its authentic character.
— Grava Group · Namur, January 2026
95%Thermal insulation value (R-value)
90%Airtightness
40%Energy savings (estimate)
75%EPC score improvement
The result What the renovation delivered.
A completely renewed look
From roof to façade – the house has been given a completely new, fresh look that surprises the whole neighbourhood.
Optimal energy efficiency
12 cm PIR roof insulation + triple-glazed windows = a drastic cut in energy costs and a better EPC score.
Fast execution
A complete renovation in just 2.5 weeks – efficient planning and professional craftsmanship.
A watertight roof for decades
Waterproofing of all junctions guarantees a 100% watertight roof for the next 40+ years.
More daylight & ventilation
3 new VELUX roof windows bring extra natural light and fresh air to the upper floor.
A big rise in value
A complete renovation considerably increases the market value of your home – a smart investment.
One contractor for everything – the smart choice. This project in Namur shows the strength of a complete renovation by one specialised contractor. No coordination problems, no delays, no extra costs. We plan everything efficiently and deliver a perfect end result within the agreed time frame.
Grava GroupProject in Namur
Photos of the project Namur in pictures.
4 photos — click to enlarge.
Frequently asked questions About this project.
How long does a slate roof last?
Quality slates last 50 to 100 years with proper maintenance. They are extremely durable and withstand all weather conditions.
Can I get grants for roof insulation in Wallonia?
Yes! In Wallonia, grants are available from the Walloon government for roof insulation and window replacement. Contact us for more information about grants.
How quickly can I get a quote?
After your request we schedule a free site visit within 48 hours. You receive your detailed quote within 3–5 working days.
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- Phone
- +32 333 20 630
- leads@gravagroup.be
- Address
- Sneeuwbeslaan 14, 2610 Wilrijk
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