What are rock wool insulation and fiberglass insulation?

Many contractors still misunderstand that rock wool and glass wool are the same. So, what are rock wool insulation and glass wool insulation?

Many people think that... a quiet house or a house that isn't hot is due to the walls or air conditioning. But actually, there's an important material hidden insidecalled "insulation." And the most commonly used insulations in construction are of 2 types.

Glass Wool Insulation / Rock Wool Insulation

What is Glass Wool Insulation?

Glass wool insulation is a material made from molten glass, spun into very fine fibers. It resembles fluffy yellow cotton.

Main properties

Helps reduce heat from the roof
Helps absorb echoes
Lightweight
Easy to install
Affordable

Therefore, commonly used in

Residential homes
Ceilings
Lightweight walls
Office buildings

What many people don't know is that most glass wool is made from recycled glass, making it a relatively environmentally friendly material.

What is Rock Wool / Stone Wool Insulation?

Rock wool insulation is made from volcanic rocks, such as basalt. The process involves melting the rock at temperatures exceeding 1,500°C and spinning it into fibers. It appears as dark gray fibers with high density.

Key properties