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1

In my humble opinion, nails have little purpose in construction of a deck. There are at least five different types of screws made specifically for this application. They have torx heads and are very solid. Only specific instructions I would otherwise have is that if you really want to press the old and the new sisters together, drill a pilot hole in the side ...


4

I'd be using stainless steel deck screws or stainless steel lag screws.


0

Regrading the soil is a must since the soil level was 6" below the rest of the area. The landscape fabric keeps weeds out but not water so I wouldn't be using that. The plastic would have a limited life and you don't want to be ripping up deck planks to check it. I'd be thinking about installing flashing under the deck planks and sloping it down away from ...


1

Since it will be covered it won’t rot away but it will turn gray. I also live in the Pacific Northwest south of you , condensation is the biggest issue I see and occasional condensation is not a problem. My riding arena 120’ with poly the entire length for light it is 30 + years old with no issues but is 22’ up so the color is far enough away we don’t ...


0

Yes, the Douglas Fir will decay in a few years if left untreated: 1) dryrot in end grain, 2) grain will raise, 3) major dis-colorization, 4) knotholes will become loose and fall out, 5) warping due to excessive moisture penetration. You say the lumber will be covered, but where you live, wind blown rain and just a generally wet environment will affect the ...


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