
Projects / Machelen
Project · Machelen · 05/2024 Machelen
Renovation in Machelen – pitched roof with VELUX, brick slip façade and aluminium windows
- 2months of work
- 380 m²total surface
- 22 cmRockwool roof insulation
2months of work
380 m²total surface
22 cmRockwool roof insulation

The project Pitched roof with VELUX, brick slips and aluminium windows
A full renovation of roof, façade and windows. This project shows our experience with pitched roofs, brick slips, aluminium windows and VELUX roof windows — all from a single contractor, with guidance on grants and subsidies.
- New pitched roof with Koramic and VELUX
- Brick slip façade on 12 cm EPS to ETICS standards
- High-quality aluminium windows – the start of the façade renovation
How we went about it 3 steps, one point of contact.
Phase 1Roof
22 cm Rockwool, underlay and vapour barrier, Koramic tiles and VELUX roof windows.
Phase 2Façade
Brick slips on 12 cm EPS to ETICS standards, with a watertight finish.
Phase 3Windows
Aluminium windows: the first step of the façade renovation.
What we carried out
New pitched roof with Koramic and VELUX
- Complete installation of a new pitched roof
- 22 cm of Rockwool roof insulation for maximum thermal performance
- Underlay and vapour barrier to all standards
- Koramic tiles and battens for a durable finish
- VELUX roof windows for extra daylight and ventilation
- Professional installation to all building standards
- Excellent EPC score thanks to 22 cm of insulation
The combination of 22 cm Rockwool insulation, underlay, vapour barrier and Koramic tiles gives a perfectly insulated roof. The VELUX roof windows bring in extra daylight and provide natural ventilation.
Brick slip façade on 12 cm EPS to ETICS standards
- Professional installation of brick slips
- 12 cm of EPS façade insulation for optimal thermal performance
- Profiles and junctions to ETICS standards
- Watertight finish against moisture
- A classic look with modern insulation
- Less noise and damp in the house
High-quality aluminium windows – the start of the façade renovation
- High-quality aluminium windows for optimal insulation
- A major improvement in energy efficiency
- Considerably less outside noise
- Lower heating costs
- The modern look and durability of aluminium
- A better EPC score
Replacing the windows is the very first step of a façade renovation: old windows cause the greatest heat loss. Aluminium windows insulate excellently, need little maintenance and last a long time.
The result What the renovation delivered.
A warm home
Thanks to 22 cm of roof insulation, 12 cm of façade insulation and new windows, the home is optimally insulated.
More daylight
VELUX roof windows provide extra natural light and better ventilation.
Less noise
Aluminium windows and a brick slip façade keep outside noise out.
Less damp
The watertight finish of roof and façade prevents damp problems and mould.
Lower energy costs
Excellent insulation brings a much lower heating bill.
A satisfied client
The client is very satisfied with the result and received grants and subsidies.

A complete transformation in two months: from an old roof and an old façade to a beautifully renovated home with a new pitched roof, a brick slip façade and aluminium windows. The client now lives warm, quiet and in the light — with lower energy costs and grants.
Grava GroupProject in Machelen
Photos of the project Machelen in pictures.
3 photos — click to enlarge.



Frequently asked questions About this project.
How much roof insulation was installed?
22 cm of Rockwool, with underlay and vapour barrier to all standards.
How long did the renovation take?
Two months for 380 m² of roof, façade and windows.
Do you help with grants?
Yes, we guide you through the grant applications for roof, façade and windows.
Projects Similar projects.
Free site visit · quote within 48 hours Want a renovation
like this?
Our specialist visits free of charge, looks at your home and sends you a no-obligation, tailored quote within 48 hours — with a free 3D design.
- Phone
- +32 333 20 630
- leads@gravagroup.be
- Address
- Sneeuwbeslaan 14, 2610 Wilrijk
Free 3D visualisation with your quote



