Wet treated base timber

Pyrotoxic · 3 Dec 2020

Hi all
Please I recently got a garden room built in bottom garden foundation brick out ground timber base and structure fibreglass from it’s a biggish room 5.2meters x 4.7metrrs.
Cause of crap weather only thing needs finishing is the top cost facial and one side the feathering on outside.
Issue I got is when it rains the wood witch I believe is c16 maybe 24 think 2x4 swan treated keeps getting wet on back left side when rains
Builder said nothing to worry once good weather back he finish roof and he’ll put a down pipe and back gutter in it

but I’m a little worried will the wood last or rot as a lot weight sitting on top

Pyrotoxic · 3 Dec 2020

Sorry this is the wood I mean it’s sitting on bricks then vamp proff it’s on the left back corner think from the ground is higher there I dune a 20mm pea shingle all around the outside

^woody^ · 3 Dec 2020

It should be kept dry while stored. Throw a tarpaulin or polythene over it, but allow air under to dry it off.

Pyrotoxic · 3 Dec 2020

The build is built I mean the wood on the bricks base ? Even tho it’s on the bricks and damp proff it’s still getting wet whe. The rain hits ground

Pyrotoxic · 3 Dec 2020

Behind building

Pyrotoxic · 3 Dec 2020

I pea shingled around hoping it would help but the base layer of wood is still getting damp

^woody^ · 3 Dec 2020

You've got a bad design there, and the bottom timber and cladding will be permanently damp.

There should be what is called a "drip" detail to make sure that water runs of the cladding properly and not soak the bottom of the timber or that bit of wall. Plus there should be no splashes off the ground that splash up the timber cladding - this is achieved by keeping the ground level low and making sure there is a good roof overhang.

DiyNutJob · 3 Dec 2020

Wood rot is caused by water, fungi, and warmth. Two of the 3 ingredients are missing, because they are out of season.

^woody^ · 3 Dec 2020

What? Wood does not rot for 9 months of the year?

Pyrotoxic · 3 Dec 2020

Shall I remove my pea shingles and take some the dirt out and then put back ? or you think when he finish the top coat on roof and puts the guttering it will help ?
if not will that wood still be ok ? This is so far last stage on all inside has electrical dune I got is sound fully instulated and sound block and plastered lined painted last thing left is the front and one side feather edged and the facial

Pyrotoxic · 3 Dec 2020

Just took a s quick pic to show just this bottom peice gets wet

will it be ok tho ? Or should I talk to him about it cause he said it be fine treated wood

^woody^ · 3 Dec 2020

Any timber needs to be at least 150mm above ground level, 200mm is better.

Treated wood is still not supposed to be constantly wet

Here is a good example of how it should be at ground level

DiyNutJob · 4 Dec 2020

^woody^ said:
What? Wood does not rot for 9 months of the year?

It will, if you wet it and cover it up with protection. The fungi love it. For example, if fungi get beneath paint and have water, the wood would rot. If the wood is bare, water and fungi can't do much in the cold? How long does a tree stump take to rot? Many years or never.

^woody^ · 4 Dec 2020

DiyNutJob said:
It will, if you wet it and cover it up with protection. The fungi love it. For example, if fungi get beneath paint and have water, the wood would rot. If the wood is bare, water and fungi can't do much in the cold? How long does a tree stump take to rot? Many years or never.

Lol. Winter is the best time for wet rot.

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Wet treated base timber

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