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Installing blown wool


The installation is carried out with a specific machine, which is usually situated in a truck. All equipment needed for a day's work include the necessary amount of wool, the blowing machine and all hoses. 

There are 2 people involved, one feeding wool to the blower in a safe area, and the other person controlling the hose. Usually the truck has a hose of about 50 to 60 meters, but the hose can be up to a couple of hundred meters if necessary. The diameter of the hose is usually 70 - 100 mm depending on the contractor.

Installing insulation on walls

When blowing wool onto the walls, water is sprayed onto the fibrous wool. After the pulp is plastered into the space which requires insulation. When using stone wool, the wool is blown dry and as thight as possible. The wool might sink over the years and become a contributing factor to the coldness of the floor. To reduce this risk, the wool is blown on extra thick.

With specialized equipment, experience and skill, a contractor can blast new flooring wool through a hole in the wall between the sunken insulated floors of the old floor. This prevents the floor from being demolished when the insulation needs to be improved. 

Installing insulation on a slanted roof.

For the ceiling, the wool is blown into the cavity between the load-bearing ceiling beams so tight that it does not sink. The blowing density is then about 50-100% higher than in a conventional lattice top.

The density of the blowing wool varies depending on the raw material. The density ranges from just over 10 kg / m3 up to 50 kg / m3. The lightest is binder-free glass wool (white wool). Yellow glass wool is 20 - 25 kg / m3, wood fiber insulation approximately 30 kg / m3 and rock wool 23 - 69 kg / m3.

The heaviest is rock wool when it is recycled from heavy wool boards.

Blowing affects the density. Therefore, the learned techniques, machine adjustments, hose lengths and technical aspects affect the density. Wind barriers must be installed before blowing on the top floor. The barriers ensure that the wind does not influence the blowing process. Any work done on the edges is also easier to do properly when the barrier is formed around them.

Why Eko-Expert?

  • Powerful machines High blowing capacity
  • Modern and advanced equipment
  • Professional staff
  • Good schedules
  • Long blowing distances, vertical and horizontal
  • All types of blown wool
  • Turnkey solutions 2 years' warranty on work
  • Household deduction available

"Based on what I have seen I can say the job went well with
Eko-Expert in regards of LECA and blown wool."

Juha NieminenHartela

"Our cooperation has gone great. The customer service
has been good and professional. The work was finished
on schedule and the quality of the product was as agreed."

Pasi HamunenRakennuskartio Oy

"Things went ok."

Kari KeränenSkanska

"We have been satisfied with Eko-Expert.
Nothing to comment on. The guys have always taken initiativive
in blowing wool. Everything has gone well."

Mikko LehikoinenUudenmaan Rakennuspalvelu

"Everything went as we agreed. I have done many projects with them.
They will most likely provide wool for our current project as well."

Juha KarhuUudenmaan Mestari-Rakentajat Oy

"I have ordered wool from them many times."

Mika RautioRealco

"Everything went nicely."

Vesa RantanenTurun Teollisuuden Rakentajat Oy

"We have 12 detached or semi-detached houses here on our worksite.
All roofs were insulated with Eko-Expert's blown wool.
Everything went nicely according to plan."

Mika PeltonenHausia Oy

"Things have gone great, nothing bad to say.
Eko-Expert and the contact person have taken care of things well."

Matti OrelaJärvenpään Isännöintipalvelu Oy

"Eko-Expert has always worked well with us."

Hannu LaurentoRakennus Oy Wareco