Our business idea is to simply and effectively ensure healthy indoor air. We humans spend perhaps 90% of our lives indoors. Therefore, it is of major importance that this air is healthy. cTrap should be the obvious first choice to remedy emission problems. We would also like cTrap to be used in a preventive manner – before health problems arise.


cTrap was developed from research at Lund University on the link between moisture damage and ill-health. With the idea of an emission barrier in the form of an adsorption cloth, and with the help of LU Innovation, the cTrap cloth was patented and cTrap Ltd was formed. Over the years the company has grown steadily, with constant quality assurance as a guiding principle.

See the timeline below!


A cTrap installation made in 2013 led to a reduction in floor emissions from 63 to 1.5 ug/m3 2-ethylhexanol (directional measurement). At a follow-up 6 years later it was found that the lower value remained, and after 10 years the value had dropped to 1.0 ug/m3


cTrap is increasingly used when older industrial properties are converted to homes, offices, etc.


All patent applications for the USA, Canada, China and Europe have been approved.


In a room where the walls contained tar material most of the wall surfaces were covered with cTrap, which caused the odor to disappear and the air concentration of PAH to decrease from 1726 to 139 ng/m3.


The cTrap effectively stops the odor of tobacco smoke entering from neighbouring apartment(s) through leaks in the ceiling/floor construction.


Today, the cTrap is installed in properties throughout the Nordic region and the company continues to grow and ensure a good indoor air quality.


cTrap is proven to be able to effectively prevent emissions of PCBs from contaminated concrete as well as chloroanisols and chlorophenols from impregnated wood.


cTrap receives the SKAPA Foundation’s Future Innovator award.


cTrap is nominated as the most innovative new building material at Nordbygg.


cTrap Ltd continues to expand and the company now also has representatives in Finland.


The cTrap is consolidated as a long-term sustainable solution: the cTrap cloth was installed in a room with heavy floor emissions – after a year less than 1% of the cloth’s adsorption capacity had been consumed.


cTrap Ltd. is formed. Johan Mattsson is appointed CEO of the company.


A new prototype of the cTrap arrives for testing. This version became the final cTrap cloth, which in subsequent laboratory studies is shown to fulfill the requirements regarding adsorption efficiency, capacity, durability, moisture permeability etc.


cTrap gets the Big Innovation Prize from PwC, Lund Municipality and Lund University Innovation (LUIS) and goes to the regional final in the national business plan competition Venture Cup.


The first factory made prototype of cTrap arrives for testing.


Pawel Markowicz is employed as a PhD student. In the next few years, Pawel will engage in tests of cTrap in the laboratory as well as in real cases of damage.


The cTrap idea undergoes a novelty search. The result: It is confirmed as unique.


Lennart Larsson, researcher at Lund University, presents his idea – an emission barrier in the form of an adsorption cloth – to Thomas Rundqvist at Lund University Innovation (LUIS).

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