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  #1  
Old 2009-11-13, 01:16 PM
burlington1971 burlington1971 is offline
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Default Damp Proofing Basement Walls

So here is a question for ya.

The Ontario building codes states:

9.13.2.6. Interior Dampproofing of Walls
(1) Where a separate interior finish is applied to a
concrete or unit masonry wall that is in contact with the soil,
or where wood members are placed in contact with such
walls for the installation of insulation or finish, the interior
surface of the foundation wall below ground level shall be
dampproofed.
(2) The dampproofing required in Sentence (1) shall
extend from the basement floor and terminate at ground
level.
(3) No membrane or coating with a permeance less than
170 ng/(Pa.s.m2) shall be applied to the interior surface
of the foundation wall above ground level between the
insulation and the foundation wall.

So if the maximum permeance is 170ng above grade, will the Celfort® 200/CodeBord with a permeance of 45ng be ok below grade as a damp proofing?

I feel like I'm getting confused on this one.

Thanks for any help.
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Old 2009-11-13, 01:32 PM
burlington1971 burlington1971 is offline
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I have cleared this up, since the foundation was damp proofed on the outside by mattamy, no interior damp proofing is required. Just insulation and vapour barrier.
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Old 2009-11-13, 02:30 PM
Jeffask Jeffask is offline
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Is the insulation and vapour barrier even required on the lower half of the wall?
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Old 2009-11-13, 02:46 PM
burlington1971 burlington1971 is offline
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Yes, if the wall is finished.
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Old 2009-11-13, 05:10 PM
Big Al Big Al is offline
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Default walls

But only if the interior wood is in contact with the wall?
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Old 2009-11-13, 10:37 PM
burlington1971 burlington1971 is offline
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Quote:
Originally Posted by Big Al View Post
But only if the interior wood is in contact with the wall?
All exterior walls must be insulated, even if you leave an air gap it still needs to be insulated. Interior walls don't need anything.
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Old 2009-11-16, 10:02 AM
R.F.D. R.F.D. is offline
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Hey b-1971,

a few questions for you...

are you using the 2 inch celfort 200?
are you then planning 2x4 framing or strapping?
if 2 x 4, more insulation? i.e. roxul
subfloor?
plans for header? sprayfoam DIY or foamboard?

Have you had your house assessed for ontario and canadian "green" grants?

Sorry for all the questions, just seems like you are going down a similar path for basement finishing as i am.
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Old 2009-11-16, 10:49 AM
burlington1971 burlington1971 is offline
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Quote:
Originally Posted by R.F.D. View Post
Hey b-1971,

a few questions for you...

are you using the 2 inch celfort 200?
are you then planning 2x4 framing or strapping?
if 2 x 4, more insulation? i.e. roxul
subfloor?
plans for header? sprayfoam DIY or foamboard?

Have you had your house assessed for ontario and canadian "green" grants?

Sorry for all the questions, just seems like you are going down a similar path for basement finishing as i am.
2 x 4 with roxul r-14, no celfort. Safe and sound in interior walls and ceiling. Dricore subfloor. No green grant plans.
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