the dryline a TL system is where you apply gyproc thermo line boards onto new masonry backgrounds on new build projects you should ensure the walls are dry before dry lining takes place on renovation of old backgrounds where the plaster has been removed ensure old backgrounds are cleaned down and sealed with a dilutions of thistle jib Prime before applying gyprock thermal line bolts so let us run through the products to complete dry liner tear chip rock drywall adhesive which is used to bombed the gyproc thermal i'm boards or gyproc wall boards in the dry liner basic system gyproc Nayla ball plugs which are required as a secondary mechanical fix with gyproc thermal line boards thistle chip prime to control high suction backgrounds there is a range of gyproc thermal line boards which can be used they are gyproc thermal and basic plus super and PIR first we need to determine the high spots on the wall using a piece of the gyprock thermal on board you are going to use an allowance of 10 millimeters for the gyprock drywall adhesive mark the plumb position to the ceiling and floor at both ends of the wall once this is done strike a chalk line on the floor and ceiling mark the wall with vertical lines at 1200 millimetres to indicate the board positioning using a saw cut the gyproc thermal I'm boards slightly shorter than floor to ceiling height first trowel apply a continuous Filat of gyprock drywall adhesive to the perimeter of the wall around any service penetrations and window or door openings to provide optimum air tightness to the wall lining start dry lining from an internal angle window or door reveal trowel apply gyproc drywall adhesive to form dabs 50 to 70 millimeters wide and approximately 250 millimeters long the dabs should be 75 millimeters apart position the dabs in three vertical rows to receive the board ensure the dabs are kept approximately 25 millimeters from the edge of the board to avoid bridging the joint apply intermediate dabs at ceiling level apply a continuous band of chippewa adhesive at floor level this creates a solid backing for skirtings and maintains the perimeter seal for air tightness to the wall lining additional dabs can be applied where you know wall units and radiators are going to be positioned now we are ready to apply the gyproc thermal line board onto the wall tapping it back with a straight edge until the board is in line with the ceiling and floor chalk lines once the gyprock drywall adhesive is set select the correct length Nayla bULOG to give a 25 millimeter penetration into the masonry background drive in each plug until the head is slightly below the liner without fracturing it now for a window reveal a solid band of drywall adhesive is applied around window openings to maintain a perimeter seal at window and doorway openings it is important to return the thermal board into the reveals to reduce thermal bridging around openings run the lining past the corner by 27 millimeters for the gyproc Thermal im+ which is being used to return into the reveal cut the insulation back to allow the installation of another gyproc thermal on board on the reveal in order to maintain a plaster board light to the surface window and door reveals create significant thermal bridges where plaster board is used instead of gyproc Thermal I'm bored it is important you return thermal I'm bored into the reveal for correct installation there you have it dry line a TL dry lining and insulation in one operation