sister cedar to PT okay?

D270

Hi,
Maybe a stupid question...this is for a playset swing beam...I have gotten a lot of good information in another thread...but quick question:

Is there any problem sandwiching a cedar 2x8 with PT 2x8's?

Before using PT wood....do I need to let it dry out?
Is there a good way to prevent it from twisting?

Would sistering the "wet" wood onto the cedar beam prevent the PT sides from twisting?

Thanks!

Great site...

CoconutPete

I'm not sure about wet wood and how to dry it - thank god my lumber yard delivered nice dry straight PT to my house.

Anyway.... I built the structure of my deck out of PT and the railing, skirting an decking out of Cedar about a year and a half ago. The two types of wood do just fine in direct contact with each other.

Hope that helps...

woodworkbykirk

it will be fine.. ive clad pt decks with cedar plenty of times to dress up the deck a bit. as long as you do it before the pt begins to warp it will actually make it stronger and less able to twist or warp as now 3 plys will act as one

D270

If a cedar board is sistered to a PT board, would that help prevent the PT from warping?

woodworkbykirk

see my last post. its fine by laminating it makes it more stable as the movement from each peice of wood counter acts the other

D270

I see it, sorry bout that. I was wondering about trapping the moisture on one side of the board increasing the chance of warping.

If I sandwich a PT-cedar-PT do I stagger the crowns?

I was doin this sandwaich to lessen the likely hood of PT warping...it seems to warp quite a bit.

Has anyone ever made a jig to let boards dry out while keeping PT boards straight?

Thanks!