How to make trellis

All of the pieces of the trellis in place and showing some of the screws which hold it together.
All of the pieces of the trellis in place and showing some of the screws which hold it together.

Trellis can be purchased ready made from garden centres and DIY stores but it is in a limited range of sizes, you only have one spacing for the lathes and it is often quite light weight. A far better way is to make it yourself from pressure treated timber and you can chose any sizes and the spacing of the lathes. Closer together for more screening or to provide a wind break they can be spaced to give you the 50% optimal permeability.

Materials:

  • 50 mm x 25 mm Tannalised softwood (tile lathe)
  • Wood saw
  • Battery drill/driver
  • 40mm x 3.5 mm countersunk woodscrews
  • Tape measure
  • Set square or combination square

Method:

  1. Decide on the overall height and width of the trellis panel.
  2. Enter the dimensions into the table below.
  3. Adjust the the spacing of the lathes to get the spacing you would like. For a wind break a trellis density of about 50% is idea.
  4. Cut the length shown at the bottom of the table.
  5. If you plan to stain the trellis do it now before you assemble it.
  6. First vertical pieces of the trellis.
    First vertical pieces of the trellis.

    Take two of the pieces which are to be the vertical parts of the trellis on a level surface the width of the trellis apart.

  7. First horizontal pieces added to the trellis.
    First horizontal pieces added to the trellis.

    Connect the ends with two of the horizontal, fixing them with width a wood screw.

  8. Trellis showing the first intermediate verticals being added.
    Trellis showing the first intermediate verticals being added.
    Trellis with all the vertical pieces in place.
    Trellis with all the vertical pieces in place.

    Arrange the remaining vertical pieces under the horizontal pieces attached in part 7 above.

  9. The spacer piece used to set the gap between the pieces of wood.
    The spacer piece used to set the gap between the pieces of wood.

    Cut a piece of wood the length of the distance between the vertical pieces and use it to space them. Adjust if necessary and secure to the top and bottom pieces by screwing through them into the ends of the vertical pieces.

  10. The trellis showing the first horizontal pieces in place with screws.
    The trellis showing the first horizontal pieces in place with screws.
    All of the pieces of the trellis in place and showing some of the screws which hold it together.
    All of the pieces of the trellis in place and showing some of the screws which hold it together.

    Arrange the horizontal pieces between the top and bottom pieces, spacing them with a piece of wood as in part 8 above and secure them at ever intersection.

The different parts of the trellis which relate to the form for working out the spacing and quantities.
The different parts of the trellis which relate to the form for working out the spacing and quantities.

Vertical Lathe Spacing

Overall width of the trellis (a): mm

Width of vertical lathes (b): mm

Number of vertical lathes (c):

Gap between the vertical lathe (d):
mm

Horizontal Lathe Spacing

Overall Height of the trellis (e): mm

Width of horizontal lathes (f): mm

Number of horizontal lathes (g):

Gap between the horizontal lathe (h):
mm

Trellis density:
% (The higher the density the less you will see though the trellis.)

Cutting list:

  • vertical lathes
    mm long
  • horizontal lathes
    mm long

 

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