wool is a better insulation than sand
It depends on the application and your budget. The rockwool insulation is more dense (KG/M3) than the glasswool insulation. The rockwool is also economical as compared to glasswool insulation. In some cases where the air velocity is greater one must use rockwool because it does not decay to much and does not cause any health issues. Glasswool and rockwool, both are incombustible so you can choose whatever you want. But I shall go with the economical one.
Rock wool is made from natural basalt rock and is denser than fiberglass insulation, making it better at soundproofing and fire resistance. Fiberglass is made from molten glass fibers and is lighter and more flexible, making it easier to handle and install. Fiberglass insulation typically has a higher R-value than rock wool, providing better thermal insulation.
Cotton wool has a very low density and has thousands of pockets to trap air in. Because of this, cotton wool is a good insulator, but there are others that are better. As a rule of thumb, the lower the density, the better the insulator. There are virtually no exceptions to this.
It is possible that spun wool insulation manufactured in the 1940s could contain asbestos. Asbestos was commonly used in building materials during that time period, including some types of insulation. It is recommended to have the insulation tested for asbestos before conducting any renovations or other activities that could disturb the material.
Cotton wool is an insulator as it does not conduct electricity. It is widely used in applications where insulation is needed, such as in clothing, padding, and protective gear.
The most commonly used insulation is glass wool. this is made from sand which is melted and spun into glass fibres.
Rock wool is used for lost insulation It could also be used for sound insulation
It depends on the application and your budget. The rockwool insulation is more dense (KG/M3) than the glasswool insulation. The rockwool is also economical as compared to glasswool insulation. In some cases where the air velocity is greater one must use rockwool because it does not decay to much and does not cause any health issues. Glasswool and rockwool, both are incombustible so you can choose whatever you want. But I shall go with the economical one.
Rock wool is made from natural basalt rock and is denser than fiberglass insulation, making it better at soundproofing and fire resistance. Fiberglass is made from molten glass fibers and is lighter and more flexible, making it easier to handle and install. Fiberglass insulation typically has a higher R-value than rock wool, providing better thermal insulation.
Heat insulation would be wool. Note that denim is normally made of cotton, or a cotton/polyester blend. None of them would be very good electrical insulation when wet.
Heat insulation would be wool. Note that denim is normally made of cotton, or a cotton/polyester blend. None of them would be very good electrical insulation when wet.
Rock wool insulation was a substitute for asbestos insulation. You bought one or the other, not both.
The R-value measures the thermal resistance of insulation materials like rock wool. A higher R-value indicates better insulation effectiveness, as it shows how well the material can resist heat flow. In the case of rock wool insulation, a higher R-value means it can better keep heat inside during cold weather and outside during hot weather, making it more energy-efficient and cost-effective for maintaining indoor comfort.
Cotton wool has a very low density and has thousands of pockets to trap air in. Because of this, cotton wool is a good insulator, but there are others that are better. As a rule of thumb, the lower the density, the better the insulator. There are virtually no exceptions to this.
The r value in mineral wool insulation indicates its thermal resistance, which measures how well it can resist heat flow. A higher r value means better insulation and can help reduce energy costs by keeping buildings warm in winter and cool in summer.
The R-value of mineral wool insulation typically ranges from 3.0 to 3.7 per inch of thickness.
Alpaca socks are generally warmer than wool socks because alpaca fibers are hollow, providing better insulation and trapping more heat.