Selecting the appropriate insulation for the walls of your house is essential for both comfort and energy efficiency. Mineral wool is a well-liked choice because of its superior acoustic and thermal qualities. The different densities of mineral wool insulation have a big impact on how effective it is.
The weight of the material per cubic meter is known as the mineral wool’s density. Generally speaking, it falls between 30 and 200 kg/m³, with higher densities providing superior thermal insulation. The density has an impact on the insulation’s stiffness, durability, and effectiveness. While higher density wool offers stronger structural support, lower density wool is softer and more flexible, making it easier to install in irregular spaces.
Knowing the right density is important when thinking about wall insulation. Mineral wool with a lower density—between 30 and 60 kg/m³—is appropriate for common uses where access is restricted or there may be irregular space. Because of its lightweight and ease of handling during installation, it fits various wall shapes and sizes perfectly.
Higher density mineral wool, which ranges from 80 to 200 kg/m3, on the other hand, is perfect for applications needing improved durability and thermal performance. It is appropriate for locations that require impact resistance or structural support because of its superior resistance to compression. Superior soundproofing properties of higher density mineral wool also lessen noise transfer between rooms.
Think about the requirements unique to your home, the building codes, and the climate when choosing the density of mineral wool for your wall insulation. A professional’s advice can help you select the ideal density to maximize comfort and energy efficiency and turn your house into a more enjoyable place to live all year round.
- What is the density and thickness of mineral wool affected
- Choosing density and thickness of mineral wool
- A little about the combustibility and service life
- Insulation technologies
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What is the density and thickness of mineral wool affected
Regarding whether mineral wool can be used to insulate a house from the inside or the outside, the response will be clear-cut. Yes, of course. Can’t. and occasionally even required.
This is particularly valid for thermal insulation found outside. In this instance, cotton wool has an impact on the house’s overall system of defense against the cold. Size selection is based on:
- climatic conditions in the region;
- moisture;
- wall material;
- maximum and minimum temperatures during the year.
Avoid pursuing cotton wool with a low thermal conductivity coefficient. Ultimately, it cannot ensure that all functions are executed 100% of the time.
In terms of thickness, 50 mm will be the minimum indication. However, this is insufficient objectively. In 99 percent of cases, more must be taken.
The unit of density measurement is kg/m3. The insulator will cost more the higher this parameter is set. Production technologies are to blame for this. Denser products require more materials to produce.
Mineral wool for wall insulation has a density ranging from 20 to 250 kg/m3. To be more exact, these are universal traits. It is evident that 20–30 kg/m3 is insufficient for wall insulation of the highest caliber.
In order to select the ideal density of mineral wool for either dry decoration or a wet facade, it is critical to comprehend the precise effects of this parameter:
- the ability to withstand the loads;
- resistance to possible deformations;
- Compression resistance.
Furthermore, the following variables are unaffected by density:
- vapor permeability;
- noise insulation;
- The thickness of the plates.
It is also possible to state, with some qualification, that the density has no direct bearing on the properties of insulation. We won’t get into the specifics of this challenging technical moment right now.
Choosing density and thickness of mineral wool
Let us now address the appropriate density of stone wool for facade insulation, along with the ideal thickness parameters.
By the way, you shouldn’t use mineral wool if you’re worried about getting wet from external use. It suffices to use protective films and membranes to construct an insulation cake that is technologically correct. Worry about the mineral wool getting wet all of a sudden in this situation rather than its value.
First, let’s talk about thickness. 80–100 mm is required for a continental climate that is moderate. This is typical of the Leningrad and Moscow area. As one moves out of this area and into a more continental, abruptly continental, or other climate, 10% more thickness must be added at each step.
When discussing the density of mineral wool for wall insulation, the following examples are pertinent:
- Up to 40 kg/m3 . These are just not loaded horizontal surfaces. In general, it is better to use anywhere in insulation. Unless in the inter -story partitions;
- From 50 to 75 kg/m3 . Suitable for the outer walls of non -residential, as well as a production room;
- Up to 110 kg/m3 . Relevant for ventilated facades. But provided that the walls will be sheathed with siding, or with similar materials;
- 130-140 kg/m3 . It is used for external thermal insulation, followed by plastering walls.
As you can see, the mineral wool for the facade has a density starting at roughly 80–90 kg/m3. The intended effect cannot be achieved with a slab that is less dense.
A little about the combustibility and service life
Regarding environmental friendliness, Minvata need not be concerned. It is constructed from organic materials.
In addition, a lot of people are concerned about the longevity of the service and the possibility of fire. It’s cotton wool, though. Additionally, people think that Vatu is easily ignited. essentially in vain.
One could think of the combustibility indicator as the manufacturer’s crowning achievement. The majority of mineral wool varieties fall under the NG class. That isn’t flammable. This indicates that the layer has the capacity to reach temperatures between 600 and 650 degrees Celsius.
Additionally, there are two varieties of mineral wool with a combustibility group of G1. In other words, these materials have weak wounds. These include products with a foil layer and hard slabs with a density of 175-225 kg/m3 and a temperature limit of 100 degrees Celsius.
Class NG is the combustibility class for all other types. Temperatures ranging from 400 to 700 degrees Celsius may affect them. Depending on the particular kind, density, and thermal conductivity metrics.
Speaking now of the operation’s duration. Her service life is estimated to be between 50 and 70 years when discussing materials like mineral wool. However, this is only contingent upon accurate installation. Then, you can rely on such a life with confidence.
The density of mineral wool is a critical factor in wall insulation, influencing its efficacy and longevity. Selecting the appropriate density requires striking a balance between installation feasibility and cost-effectiveness as well as thermal performance. While lower densities are more manageable and may be more economical in milder climates, higher densities are typically more thermally resistant, making them perfect for colder climates. Comprehending these variables facilitates informed decision-making for homeowners and builders, enabling them to optimize energy efficiency and comfort levels in their dwellings.
Insulation technologies
Some nuances related to thermal insulation technologies should also be clarified if we are talking about the density of stone wool for wall insulation. However, a lot of them plan to do the work by hand.
Therefore, the technology of using mineral slabs, mats, and rolls for wall insulation interests us.
We will not discuss thermal insulation through internal means. However, there are a number of drawbacks to this approach. It is precisely external styling that matters most.
Three distinct technologies are identified in total:
- well;
- wet method;
- ventilated facade.
The material is arranged as though inside the wall in the first instance. situated in between the external lining and the primary building material. The latter is constructed from cellular concrete and silicate brick. Not the most typical resolution.
A ventilated facade is a common feature of wooden homes. Its main purpose is to build a subsystem, or frame, around the structure’s edges. Within, insulation is installed. attached to mineral wool using dowels or glue. Here, an additional vapor barrier is not necessary. Ultimately, a space forms between the cotton wool and the facing material. The cotton wool doesn’t get wet, but the air will circulate at its expense. The dew point is changed and moisture does not build up.
Plaster finish can be applied using a wet method. High-density mineral wool slabs are needed for this. After the walls are aligned, finishing is done and a 2-3 cm thick layer of plaster is applied on top.
| Mineral wool density (kg/m³) | Recommended Application |
| 10 – 30 | Interior walls where space is limited, provides basic thermal insulation. |
| 30 – 45 | Exterior walls in moderate climates, balances insulation and space constraints. |
| 45 – 60 | Colder climates or where higher insulation is needed, thicker walls may be required. |
Selecting the appropriate density of mineral wool for wall insulation is essential to guaranteeing both comfort and energy efficiency in your house. Mineral wool usually has a range of densities, from low to high. Its qualities as an acoustic and thermal insulation are directly influenced by density.
Because of its lighter composition, low-density mineral wool is easier to handle and install while still providing good thermal insulation. It’s perfect for places where weight savings are advantageous and space is not a constraint. It might, however, provide marginally less thermal resistance in comparison to options with higher densities.
Conversely, because of its compact structure, high-density mineral wool offers better thermal insulation by minimizing heat transfer through walls. In spaces where there is a need to maximize thermal efficiency, this kind of insulation is beneficial. High-density mineral wool also has superior acoustic insulation qualities, which effectively cut down on noise transmission.
Take into account the unique needs of your house when choosing the appropriate density for your wall insulation. Numerous factors come into play, including local laws, building design, and climate. Finding the ideal density for your project can help you balance energy efficiency, cost-effectiveness, and performance. You can do this by speaking with an expert or performing a thorough assessment.
