11th January 2017

How to Install the Intrim 800 Series Shadowline® System

We have prepared easy to follow steps together with detailed illustrations to assist you install the Intrim SK800 Series Shadowline® Skirting system.

Intrim® Shadowline® SK800 is available in 3 options – click links below to download detailed installation instructions.


Detailed instructions with diagrams are below for Shadowline® SK800 Single piece skirting with matching door jamb (non FR)


Cut DJ800 door jamb material to required lengths with a 45-degree mitre cut to the top of stiles and each end of the head.

Assemble the head and stile mitre joints with PVA glue and nails or screws. (Detail A) (Refer to Figure 1).


Pack opening and install DJ800 door jamb plumb and level. Take care when installing jamb material, to make sure it is fixed parallel with timber framework. (example – if framework is 90mm wide and plasterboard is 10mm thick = 90mm frame + (2 x 10mm) 2 thicknesses of plasterboard + (2 x 3.5mm) 2 thicknesses of plaster set = 117mm total width of DJ800 door jamb, therefore the difference between timber framework face and door jamb face = (117 – 90) divided by 2 = 13.5mm on both sides between the jamb face and framework face. (Detail B)

Once all DJ800 door jambs are installed, it is time to install the SK800 skirting.

Cut SK800 skirting to required lengths to fit neatly between door jambs and internal and external corners of framework. Cut SK800 skirting with 45-degree mitre cuts for internal and external corners.

SK800 Skirting must be nail or screw fixed into every stud at a maximum distance of 600mm centres. The top ribbed section of skirting must be fixed to every stud. (Detail B) (Refer to Figure 2)

SK800 Skirting must be nail or screw fixed to timber frame, and screw fixed only to steel frame, into every stud at a maximum distance of 600mm centres (minimum of 2 fixings per stud up to 90mm wide, minimum of 3 fixings per stud for 135 to 185mm wide, and minimum of 4 fixings per stud for 235 to 285mm wide). These fixing points must include 1 fixing 20mm from base of skirting board and another fixing must be through the centre of ribbed section at top of skirting board. Install with 5mm packers between the bottom edge of skirting and floor to allow for any subframe movement. (Detail B) (Refer to Figure 2)


Install plasterboard sheet to framework as per manufacturer’s specifications. Cut and fit plasterboard sheet as close as possible to door jamb and skirting edges. Preferable to have the factory finish plasterboard edge sitting on the top of SK800 skirting edge. (Refer to Figure 3)


Install all PVC stop beads (PLTB 630 – 30mm x 6mm tear off bead) to door jamb surrounds and metal perforated angles to external wall corners, taking care to cut the corners to a point to eliminate plasterset material build-up. (Detail C) (Refer to Figure 4)


Brush down the top ribbed section of the skirting to remove all dust prior to plaster setting. Set all plaster joints including the joint where the bottom edge of wall plasterboard sits on top of the shadowline skirting, using FibaFuse or paper joint tape. (Any tape used that does not meet the recommended tape types will void all warranty). The FibaFuse or paper joint tape should be positioned within the joint so the bottom edge of the tape comes within 5 – 10mm of the bottom edge of the ribbed section of skirting. All plaster set and accessories must be installed to manufacturer’s specifications and instructions. (Refer to Figure 5)


Apply plaster set to PVC stop beads around door jamb surrounds. All plaster set and accessories must be installed to manufacturer’s specifications and instructions.


Apply all coats of plaster set including top coats to all plaster joints and sand. Tear of PVC lip on stop bead around door jamb surrounds and it is now ready for painting. All plaster set and accessories must be installed to manufacturer’s specifications and instructions.


If you have any questions, our friendly team are always here to help.

Australian Patent No AU2014100509.