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deck spacing

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Forum topic by sheriff12 posted 04-27-2017 11:02 PM 283 views 0 times favorited 9 replies Add to Favorites Watch
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sheriff12

3 posts in 85 days


04-27-2017 11:02 PM

I recently moved to Bradenton, Florida from Maryland. I’m going to build a deck. I’m going to use 5/4”x6” pressure treated lumber for the decking. In Maryland, we usually used a 16d nail for spacing of the deck to allow for expansion and contraction. Where I live in Florida, the weather is constant, with no extreme temperature changes. What spacing should be used in my situation? Thanks!


9 replies so far

View papadan's profile

papadan

3064 posts in 3059 days


#1 posted 04-27-2017 11:06 PM

If the deck boards are dry you can leave about an 1/8th ” between them. Most likely they will be wet and just install them against each other. as they dry they will shrink.

-- Artificial intelligence is no match for natural stupidity!

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Craftsman on the lake

2675 posts in 3128 days


#2 posted 04-27-2017 11:09 PM

I’ve built a lot of pressure treated decks. Papadan has it right. about an 1/8th inch. Some areas will shrink to up to 1/4”. But water will go through faster.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

View johnstoneb's profile

johnstoneb

2486 posts in 1863 days


#3 posted 04-27-2017 11:10 PM

16d nail is about 1/8”.

-- Bruce, Boise, ID

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MrUnix

5424 posts in 1889 days


#4 posted 04-27-2017 11:13 PM

Where I live in Florida, the weather is constant, with no extreme temperature changes.

You obviously haven’t lived in Florida for very long :)

While we may not get as wide a temperature swing as the northern parts of the country get, we frequently do get 30-40 degree swings or more just from day to night. Last night, it got down into the 50’s… and today it hit the 90’s. You are on the coast, so it might not be quite as bad, but even when I lived down in Miami, it was not unusual to have the temperature swing 20 degrees or more in just a few hours.

A 16p nail is what I’ve always used, and I see no problem with staying with it. The spacing also helps drain the water when we get one of our daily downpours during the summer months :)

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View JayCee123's profile

JayCee123

196 posts in 455 days


#5 posted 04-27-2017 11:34 PM

+++ papadan
The PT lumber will probably be saturated. The treated lumber will have more moisture in it then when it was green. Lay the decking boards down with the edges just touching. As the 6” wide decking lumber looses moisture it will shrink across its width a good 1/4”. If you start out with the boards just touching you’ll end up with a 1/4” gap between boards, which will look good and function well.

View sheriff12's profile

sheriff12

3 posts in 85 days


#6 posted 04-28-2017 12:47 AM

After laying out the deck and, then cutting the boards to length, there is a product that I can’t recall. It is a liquid for treating the sawn ends of the decking to protect them. Does anyone know what it is called? Thanks!

View Madmark2's profile

Madmark2

296 posts in 279 days


#7 posted 04-28-2017 12:52 AM

Use a piece of 1/2” ply as a spacer. Make it long enough to span three joints.

M

View JayCee123's profile

JayCee123

196 posts in 455 days


#8 posted 04-28-2017 01:27 PM

Try Wolman Classic Clear Above Ground Wood Preservative or Armor All End Cut Wood Preservative.

If your planning on finishing the deck in a few months use the finish you plan to use on the deck surface just apply or dip the ends now and do your overall finish in a few months.

View sheriff12's profile

sheriff12

3 posts in 85 days


#9 posted 04-28-2017 01:44 PM

Thanks! I appreciate your input.

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