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diy001 03-08-2012 04:57 PM

correct order to finish basement
I will use poly + foam + plywood + engineered laminate/wood floor to do basement floor. And I will use foam + wood frame + fibreglass + drywall to do the basement wall.

I plan to follow this order to install them:

1. put poly on the floor and all the way up 1 foot on the wall, seal every where when possible to make it as air tight as possible;
2. put wall foam (2" XPS) and glue them on the concrete wall, seal every where;
3. put floor foam (1" XPS) and seal every where;

now we have an envelop of rigid foam.

4. start wall frame, nail down with concrete and nail up with joists;
5. put plywood, just floating on top of the foam;
6. wiring and plumbing;
7. put fibreglass;
8. put drywall;
9. put engineered laminate/wood floor;

Some experts suggested put plywood before framing. So the frame is on top of the plywood.

What's your suggestion about my installation sequence?

oh'mike 03-08-2012 08:30 PM

Dinner is ready so this must be short---your method of building a floor is very unusual--that's likely why no one has answered you----it sounds like a mildew sandwich--

Why are you adding foam and plywood to a concrete floor?

Crackers 03-09-2012 01:04 PM

If the foundation leaks and you have to lift the floor; really hard if the floor goes under the wall. I prefer to leave them independent.

Yes, wood on concrete floor is difficult on the wood. Raised floor is nicer.

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