QA

Quick Answer: Decking How To

What is the correct way to lay decking?

If your decking is laid ridge-side up, the chances are you’ve got it the wrong way round. The correct way to lay decking boards for most decking is smooth-side-up, with the ridges there to prevent rot and mould.

Is decking easy to do?

Laying decking is an easier job than you might have first thought. The more planning you do and the more you understand the steps, the easier the job will be. There are several ways you can lay decking but we’re going to talk you through building a raised deck and how to lay decking on grass.

What should you put under decking?

Many professional and self-made builders agree that gravel is the perfect material to place under your deck. How can you put gravel as your deck’s base? First, you will need to prepare the installation area and dig a few inches out. Then, you’ll need to cover the area with landscaping fabric.

Should decking have gaps?

Proper wood deck board spacing should have at least a 1/8 inch gap after the decking has dried out. If you install your wood or treated deck boards while they are still wet boards, then they should be attached without a gap between them.

Can I use 4×2 for decking frame?

4 x 2 Timber Rail / Joist These decking joists are the most common sized framing timber for decking. They provide a solid structure for fixing your decking boards too. When making your decking frame you should use a 400mm spacing between your timber joists.

Can you lay decking on uneven ground?

You can install decks almost anywhere, as long as there is a suitable foundation. While they are easiest to install on level grounds, you can also build them on sloped or uneven terrain.

How do you stagger deck boards?

A common method for staggering a deck is to start the first row with a full plank, then cut one-third of the next row’s first board off the end. The row after that has an additional one-third cut off and then repeat when you get back to a full board.

Can I build a deck directly on the ground?

Yes, you can build a deck directly on the ground, but with some conditions. A deck on the ground must be built with ground-contact wood, and the substructure needs to be adapted for minimal height. Even though technically a ground level deck is elevated up to 24”, here we will discuss decks built less than 8” high.

Should decking be attached to the house?

The decking structure should not be fastened directly to the fabric of the house, there should be at least a 10mm gap between the structure and the house. The decking should slope away from the house at a fall of 1:100 and so you need to drop the deck by 10mm for every 1 metre of the deck.

How do you prepare the ground under a deck?

To suppress the growth of unwanted vegetation underneath the deck, the area should be covered with landscaping fabric. First, add a layer of coarse sand for drainage. Then cover the sand with landscaping fabric. Bury the fabric under several inches of gravel.

Do you need a membrane under decking?

When asked customer advice and information on this subject, the short answer is most definitely YES. The use of a quality membrane under decking will prevent weeds from taking root whilst letting water permeate into the ground below.

What happens if you don’t leave gaps in decking?

Rain can prove especially detrimental to wood decking if it doesn’t have a place to drain off the deck. When there are no gaps between the boards, this moisture remains trapped which can lead to issues like rot and mold.

Do you screw decking at every joist?

Each deck board should be fastened with two screws at each point where the board crosses a joist to ensure the stability and durability of your deck’s surface. Boards should be fastened to rim joists with three screws.

How much overhang should deck boards have?

The edge of decking should never overhang more than one-third of the decking material. For your standard 5.5” decking, that is 1 ¾” overhang.

What size joists should you use for decking?

Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.

What spacing should decking joists be?

For residential decking, the joist space should not exceed 16 inches as measured on the centre. But if you want a more rigid feel for your decking, you can space the joist by 12 inches on the centre. Additionally, for commercial deckings, the standard joist spacing is 12 inches on the centre.

What size joists do I need for decking?

In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2×8 up to 12 feet; 2×10 to 15 feet and 2×12 to 18 feet. The larger the deck, the larger the joists.

Can you use pallets for decking?

Even though it may not last as long as decking planks, pallet wood is intended to be used outdoors and, if you install a quality pressure-treated timber base, it won’t rot away from below. If any planks crack over time you can simply replace them with more pallet wood for an easy, low-cost fix.

Is it OK to stagger deck boards?

Staggering the deck boards decreases the number of screws or nails going into one joist, which can weaken or rot the joist more quickly. Staggering the joints strengthens the deck by spreading the seams across more joists instead of placing the stress on only one.

Do I need to remove grass before building a deck?

Leaving the grass in place facilitates drainage. The grass may eventually die off due to lack of sunlight filtering through the deck, but the remaining topsoil still drains water faster than if you dug out the entire area.

How do you build a deck without digging holes?

If you’re ready to start planning, there are two great options to build a deck without digging any holes: surface deck blocks and deck foot anchors. The cheapest foundations are deck blocks, which can be purchased for less than $12.00 a piece. Deck blocks sit on the ground, so proper planning is essential.

Are deck blocks a good idea?

Which type of footings should your deck have? Deck blocks are a good idea for low decks, decks around trees, areas with low frost levels and economical decks. It is a bad idea to use deck blocks when attaching the deck to the house, on stable ground or supporting elevated decks, pergolas or a roof.