wood fibre insulation for blown-in application
Ecological blow-in insulation
naturheld Flow wood fibre – where and how to use it
naturheld Flow is a loose wood fibre blow-in insulation made from pure wood fibres – no additives, fully biodegradable and ideal for ecological timber construction. The material is blown by machine into enclosed cavities, filling them completely and seamlessly.
Roof slope & roof structure
Seamless cavity insulation in roof slopes and between rafters – for maximum winter and heat protection in roof spaces.
To the 15 kg bag → WallTimber-frame wall & stud bay
Complete stud bay insulation in timber-frame constructions – even around installations, without offcuts or thermal bridges.
To the 15 kg bag → CeilingTimber joist ceiling & storey ceiling
Blow-in insulation in timber joist ceilings and intermediate ceilings – for thermal and acoustic insulation without major intervention.
To the 15 kg bag →Material comparison
Wood fibre, cellulose or mineral fibre – which blow-in insulation is right?
All three materials are blown in by machine and fill cavities seamlessly. The difference lies in focus: wood fibre excels at summer heat protection, cellulose is the all-rounder, mineral fibre scores on fire protection.
| Property | Wood fibre | Cellulose | Mineral fibre |
|---|---|---|---|
| Summer heat protection | ★★★ Very high | ★★★ Very high | ★★ Medium |
| Winter insulation | ★★★ Very good | ★★★ Very good | ★★★ Very good |
| Ecology | ★★★ 100% natural | ★★★ Recycled paper | ★ Mineral |
| Fire protection | ★★ Flame-retardant | ★★ Flame-retardant | ★★★ Non-combustible |
| Acoustic insulation | ★★★ Very good | ★★★ Very good | ★★ Good |
Products
naturheld Flow – bag or pallet
naturheld Flow 15 kg bag
For smaller projects, specialist contractors with their own blowing machine or targeted top-up of individual areas. EUR 24.90 per bag.
naturheld Flow pallet 270 kg
For larger projects and specialist contractors – economical price, direct pallet delivery. EUR 385.00 per pallet (= 18 bags of 15 kg).
Material & blow-in service
Buy wood fibre – and have it blown in on request
Order naturheld Flow directly here. For processing, you need a blowing machine – as a specialist contractor, we are happy to take care of the complete installation. We know wood fibre from daily use and advise you on insulation thickness, installation density and suitable constructions.
Frequently asked questions
Frequently asked questions about wood fibre blow-in insulation
What is naturheld Flow and what is it made of?
naturheld Flow is a loose wood fibre blow-in insulation made from 100% pure wood fibres – without chemical additives. It is blown by machine into enclosed cavities and is fully biodegradable.
Why is wood fibre particularly good for summer heat protection?
Wood fibre has a very high thermal mass. This means heat penetrates the building more slowly – roof spaces stay noticeably cooler in summer. This effect is particularly pronounced with wood fibre.
Which components is wood fibre blow-in insulation suitable for?
naturheld Flow is suitable for roof slopes, timber-frame walls, stud bays, timber joist ceilings and storey ceilings – wherever there is an enclosed cavity that can be filled by machine.
What is the difference between wood fibre and cellulose?
Both are ecological blow-in insulation materials with very good insulation values. Wood fibre consists of pure wood fibres and is fully natural. Cellulose (Unifloc) is made from recycled paper and is available as both pour-in and blow-in insulation.
Do I need special tools for processing?
Yes. Wood fibre blow-in insulation is processed by machine using a blowing unit. The material is not suitable for manual pouring. Our specialist contractor is happy to carry out the installation.
Is wood fibre suitable for energy-efficient renovation?
Yes, particularly well. Wood fibre blow-in insulation can be blown into existing constructions with minimal intervention – ideal for renovating roof slopes, timber-frame walls and timber joist ceilings without dismantling.
Ready for ecological insulation?
Order naturheld Flow wood fibre now.
Bag for smaller projects, pallet for specialist contractors – available for immediate dispatch.