Damp Protection Arrangement and Method of Protecting a Space Against Damp

Abstract

A damp protection arrangement for a space confined by floor, ceiling and wall portions in a building and comprising the following components: a damp permeable first layer structure ( 80 ), inside the space comprising at least one wall portion ( 16/80 ) of said portions; a second layer structure ( 60 ), inside the space covering at least the first layer structure ( 60/80 ); a continuous air gap ( 50 ), separated from the space and defined between the first and the second layer structures; an air inlet at a lower level in the space and communicating with the air gap ( 50 ); an air outlet at a higher level in the space and communicating with the air gap; and heating source ( 54 ) inside the air gap ( 50 ) for providing an air flow in the air gap between the inlet and the outlet and capable of dehumidifying layer structures.

1 . A damp protection arrangement for a space confined by floor, roof and wall portions ( 12 ,  14 ,  16 ) in a building, characterised by
 a damp permeable first layer structure ( 70 ,  16 / 80 ), inside the space ( 50 ) comprising at least one wall portion ( 16 ) of said portions;   a second layer structure ( 40 ,  60 ), inside the space covering at least the first layer structure ( 70 ,  16 / 80 );   a continuous air gap ( 50 ), separated from the space and defined between the first and the second layer structures   an air inlet ( 30 ) at a lower level in the space ( 24 ) and communicating with the air gap ( 50 );   an air outlet ( 94 ) at a higher level in the space ( 24 ) and communicating with the air gap ( 50 ); and   a heating source comprising a heating cable inside a portion of the air gap ( 50 ) parallel to a wall portion ( 16 ) of said portions the air gap ( 50 ) for providing an airflow in the air gap between the inlet ( 30 ) and the outlet ( 94 ) and capable of dehumidifying the layer structures.   
   
   
       2 . The damp protection arrangement according to  claim 1 , wherein the heating cable ( 54 ) extends generally horizontally inside the air gap ( 50 ). 
   
   
       3 . The damp protection arrangement according to  claim 1 , wherein the first and second layer structure also covers a floor portion ( 12 ) of said portions. 
   
   
       4 . The damp protection arrangement according to  claim 1 , wherein the first layer structure ( 80 ) comprises a geo textile cloth ( 82 ). 
   
   
       5 . The damp protection arrangement according to  claim 1 , wherein a damp permeable inner ceiling layer ( 90 ) covers a ceiling portion ( 14 ) of said portions via an interspace, said interspace communicating with the air gap ( 50 ). 
   
   
       6 . The damp protection arrangement according to  claim 5 , wherein the air outlet ( 94 ) is provided in said interspace. 
   
   
       7 . The damp protection arrangement according to  claim 6 , wherein the air outlet comprises perforations ( 94 ) in a piece of tubing ( 92 ) for exhaust air from said space ( 24 ) and extending through the interspace. 
   
   
       8 . The damp protection arrangement according to  claim 1 , wherein the air inlet ( 30 ) is in communication with an adjoining room in the building ( 10 ). 
   
   
       9 . The damp protection arrangement according to  claim 8 , wherein the air inlet ( 30 ) extends through a door threshold ( 28 ) into communication with the air gap ( 50 ). 
   
   
       10 . A method of protecting a space ( 24 ) from damp, said space being confined by floor, roof and wall portions ( 12 ,  14 ,  16 ) in a building, characterised by
 providing a second layer structure ( 40 ,  60 ), inside the space covering at least a first layer structure ( 70 ,  16 / 80 );   defining continuous air gap ( 50 ), separated from the space between the first and the second layer structures   providing an air inlet ( 30 ) at a lower level in the space ( 24 ) and communicating with the air gap ( 50 );   providing an air outlet ( 94 ) at a higher level in the space ( 24 ) and communicating with the air gap ( 50 ); and   providing a heating source in the shape of a heating cable inside a portion of the air gap ( 50 ) parallel to a wall portion ( 16 ) of said portions the air gap ( 50 ) for providing an airflow in the air gap between the inlet ( 30 ) and the outlet ( 94 ) and capable of dehumidifying the layer structures.