Open

Helpdesk for professionals

+32 15 62 19 35

Monday to Friday
09:00 to 17:00

Ask your technical question

Email to technical@isoproc.be or fill in the form.
We respond on average within 1 working day.

Allowed file types 
pdf, docx, ...

Unlimited number of files can be uploaded to this field.
20 MB limit.
Allowed types: gif, jpg, jpeg, png, odf, pdf, doc, docx, ppt, pptx, xls, xlsx.
100 MB limit per form.

Insulating attic floors

Project type
Renovation
New construction
Construction method
Masonry (or concrete)
Timber construction (timber frame, CLT,...)
Construction element
Attic floor (or intermediate floor)
Functions
Airtightness
Internal insulation
Category
Totaaloplossing
Technisch

Are you not planning to convert your attic space into a living area? Or are your current resources too limited to tackle roof insulation? Then consider insulating your attic floor instead.

With our attic floor insulation solutions, you prevent heat loss and retain warmth in the living spaces, which directly results in lower energy costs.

The text on this page was automatically translated. Minor translation errors may occur. In case of doubt, the original versions (Dutch and French) are correct.

Project type
Renovation
New construction
Construction method
Masonry (or concrete)
Timber construction (timber frame, CLT,...)
Construction element
Attic floor (or intermediate floor)
Functions
Airtightness
Internal insulation
Category
Totaaloplossing
Technisch

The benefits of attic floor insulation at a glance

  • Lower costs: Insulating the attic is often much cheaper than insulating the roof, as the surface area is significantly smaller and installation is usually simpler.
  • Quick installation: Floor insulation generally takes less time and requires less invasive work than roof insulation.
  • Efficient energy use: If you don’t use your attic, it’s more efficient to prevent heat from escaping into that unused space by insulating the floor.
  • Lower energy bills: By better retaining heat in living areas, you save on heating costs.
  • Soundproofing: Insulating the attic floor also improves sound insulation between the attic and the floor below.
  • Space-saving: When insulation is integrated into the floor structure itself, you preserve the full height of the attic, which is convenient if the space is used for storage.
     

What does our ‘Attic floor insulation’ solution include?

Across all our solutions, there’s one principle we at ISOPROC always stand by: proper insulation is more than just a thick layer of insulating material!

Wind, temperature differences, and mechanical ventilation all cause differences in air pressure between the inside and outside of a building. Even the smallest cracks or gaps in the building envelope allow uncontrolled air exchange. This short-circuits the insulation. In winter, this not only causes energy and comfort losses but can also lead to condensation issues, mold growth, and reduced ventilation efficiency. In summer, these same uncontrolled airflows increase the risk of overheating.

So, to insulate effectively, it’s just as important to build airtight and windtight. That principle is reflected throughout all our solutions.

Products used

Practical support

A detailed document with diagrams, background information, and installation details is not yet available. Still, we won’t leave you empty-handed.

Helpdesk 

Our products are perfectly suited for attic floor insulation. They have been successfully used in Belgium for over 30 years. The experts on our technical helpdesk are highly knowledgeable on the topic.

So don’t hesitate to contact our free technical helpdesk. technical helpdesk. We’re happy to share our expertise and know-how. 
 

Find a contractor

Get advice for your insulation project from one of our professionals. 

Paul Eykens
Technisch adviseur
foto-paul-eykens