WPC Composite Decking installation Guide
How to Install WPC Composite Decking (DIY)
1: Punching holes Ф6 in the installation area with impact drill.
Reommended widthways and lengthways distance between two holes is 350mm.
Knock the plastic expansion pipe Ф6 into the holes and make sure it is tight enough and will not expose.
2: Take expansion pipes as centre line and lay the joists (cut if necessary) on the line. Drill corresponding holes in the joists and fix the screws into the expansion pipes through the holes.
3: Extra fixing of expansion blots are necessary on both joists near juncture. The holes should be at least 3cm to the end of joist.
4: Allowing for the expansion and maintenance. sufficient distance around your terrace and by obstructions such as walls, fences, trees, etc. should be at least 3cm.
5: Put first decking planks on vertical way of joists, fasten the first plank by screw at outside of decking. The position and direction of first plank should be accurate guaranteed to be the reference for the following planks.
6: First plank should be fasten directly by screw instead of clips.
7: Place the clips in the right position and screw it. Insert the second plank into the clips then repeat this process.
8: Two joists are needed for each plank at the jointure.
9: In case of the deformation caused by temperature chang, joists should not be too tightly connected. We recommend the distance between two joists is 3cm.
10: Review of the whole decking system.
11: Fasten the extemal sides of the last decking the same way as first one.( as showed in pic 6 ) Install end covers and decoration cover if necessary.
