Floor slab-to-wall interface – Roxul ComfortBoard IS User Manual
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INSULATING SHEATHING FOR RESIDENTIAL CONSTRUCTION APPLICATION GUIDE
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03. Floor Slab-to-Wall Interface
ROXUL
®
Building Science Notes
01.
GENERAL
a.
Detail is applicable to grade-level wall to stem wall or slab-on-grade interface.
02.
STRUCTURE
a.
A site-cast concrete foundation wall and floor slab is pictured. A CMU foundation wall is an alternate.
03.
RAIN WATER CONTROL LAYER
a.
A drained-screen approach to rain water control (as illustrated) is recommended.
b.
The drainage plane material is the primary rain water control layer in the wall assembly. Water penetrating the
exterior cladding must be directed to the exterior by this layer.
c.
Material options for the drainage plane shown in the wall assembly above include:
i. non-perforated housewrap or building wrap
ii. building paper
iii. vapor permeable liquid or fluid applied membrane
iv. vapor permeable “peel and stick” self-adhered membrane
v. vapor impermeable membranes may be used depending on vapor control design (see Section 06 below)