Cotton insulation is similar to fiberglass insulation in several ways.
Green roof insulation types.
However a green roof with grasses or herbs contributes more to heat regulation because the substrate layer is thicker than for a sedum roof.
Recycled denim is an earth friendly roof insulation alternative.
The combination of substrate plants and the embedded air in the green roof system provide good sound insulation.
Sheep s wool is often considered one of the best insulation types available but it is also one of the most expensive.
Additionally the r value of cotton insulation and fiberglass is the same roughly r 3 2 to r 3 7 per inch of thickness source.
You may ask how well does a green roof insulate a building what is the r value of a green roof more insulation is better right does a green roof system have to include insulation don t engineers already figure this out for us.
According to etag 031 xps insulation with a cs 10 y 300 designation i e.
There are three basic types of green roof.
For one thing it can be rolled into batts.
Build it green.
Of course there is some cross over between the categories.
Other earth friendly roof insulation options include soy fibers and sheep s wool.
Intensive thick extensive thin and semi extensive somewhere in between.
Consists of a thick layer of soil 50 200mm in which a variety of grasses herbs flowers and shrubs can grow.
While this can be positioned below the roof deck installation above the waterproofing known as an inverted green roof is preferred as it further protects the membrane from condensation and physical damage.
Thermal insulation in some cases a green roof may include thermal insulation typically a layer of extruded polystyrene.
Denim and cotton waste is treated with a fire retardant chemical.
Although there are no precise definitions of them an extensive green roof has a shallow growing medium usually less than six inches with a modest roof load limited plant diversity minimal watering requirements and is often not accessible.
Most homes are filled with traditional fiberglass material with newer ones adopting recycled cellulose material for more environmentally friendly alternatives.
They fall into three main categories extensive intensive and semi intensive.
Sound waves are absorbed and reflected.
A compressive strength of 300 kpa declared in accordance with en 13164 is suitable for both green roofs and roof gardens.
Green roofs are internationally placed in three different types.
Intensive parks and gardens including urban agriculture semi intensive garden green roofs extensive natural low maintenance green roofs.
In addition to thermal insulation a green roof also has a sound insulating effect.
It is sold in rolls making it easy to install and it won t irritate the skin.
Polyfoam roofboard extra offers a declared compressive strength of 300 kpa.
