Laying Douglas fir decking

One of the most common types of wood for the production of decking is the native or North American Douglas fir. In addition to the good durability and the moderate price, the wood is easy to work and to lay. In order to make the floorboards more resistant and durable, pre-treatment before installation is recommended.

Good ventilation is important

Anyone who moves decking made of Douglas fir must take as a basis an inventory of the structural circumstances. The laying itself is the "crowning" conclusion of a well-thought-out overall construction. A central role is played by the optimal ventilation of the decking, which ensures the regular drying out of the wood.

The floor structure consists of a bed, which may consist of a closed surface such as concrete, gravel and / or soil. To optimize the ventilation effect, a minimum joint width is required. The filling of the joints is not recommended when laying the decking.

When planning the course of the grooves or corrugation of the decking must be considered. They must not be mounted transversely to the anticipated flow direction of the water, as otherwise accumulate stagnation effects. They affect both the soiling and durability of the Douglas fir decking.

How to lay Douglas fir decking

  • Tailored decking
  • Mounted stones or planks
  • fastening strips
  • Mounting plates or bearing stones
  • Fixing screws and angle
  • Shovel / spade
  • rake
  • Maybe trowel and rubber mallet
  • drilling machine
  • Cordless Screwdriver
  • spirit level
  • Tape measure or folding rule

1. Mount

The border of wooden planks or stones around the excavated pit bed can be mounted first or after the planking of the terrace.

2. Installation of the mine bed

If you are building a pit bed of earth, you are battling a slope away from the building's terminal.

3. Substructure

Place individual mounting plates or bearing blocks so that you can place the mounting strips at a distance of about twenty centimeters. Screw the strips with metal brackets on each bearing block.


Mount the decking in a sloping direction and pay attention to the correct direction of the grooves. The joint width must be three to five millimeters.

Tips & Tricks

You can also use special pedestal bearings that are designed to give the Douglas fir wood a stretch and shrinkage tolerance when fixing your decking. This improves the durability of the planks.

Video Board: laying decking