Mineral wool panels - insulation for your house


Mineral wool boards are a cheap and very heat-efficient insulation material. Under mineral wool both glass wool and Steinwolledämmplatten be understood, but both partially have slightly different properties. What else you need to know about this building material, read here.

Background information

Glass wool panels are made by spinning liquid glass through special screens until it is completely made of fibers, which are then hardened and processed into the respective end products.

For rock wool, the production is similar, except that a molten rock is used here instead of liquid glass. Rock wool boards are slightly heavier than fiberglass boards, but they are much more heat resistant. While glass fiber is heat resistant up to about 700° C, rock wool can withstand temperatures up to 1,000° C.

In addition to the mineral wool boards come as insulation materials and loose mineral wool or so-called Klemmfilze for the roof rafter insulation used.

Current offers (as of: 2013)

clamping felt
WLG 035bausep.de3,87 EUR / m²
WLG 032isover.de4,25 EUR / m²
Cavity wall insulation insulation boards
WLG 035 from Ursaeu-baustoffhandel.de3,47 EUR / m²
MW cover skirt 036hoba-baustoffe.com6,40 EUR / m²

What to look for when buying? / Recommendations

It is important to pay attention to the presence of a corresponding quality label when buying. Most of the reputable manufacturers from Europe have this RAL seal as standard. It also states, among other things, that in the plates no fibers below 3 microns are processed, which are respirable and therefore potentially harmful to health. With some cheap products, above all from the import, this seal of approval occasionally lacks. You should not obstruct such plates if possible.

WLG value as a measure of thermal insulation capacity

The WLG value for mineral insulation panels indicates the degree of insulation of the panels. The smaller this value, the higher the insulating capacity of the material - with mineral wool, the WLG value generally decreases with increasing thickness. According to a more recent standard, for some products instead of the heat conduction group, the heat conductivity levels are specified (WLS).


Video Board: Rockwool Exterior Insulation vs Rigid Foam