If you embed a radiant barrier in a wall assembly say behind siding up against the sheathing it won t function.
Using brick as barrier under house with siding.
This is especially true for our hot humid climate when a house has unshaded south.
But if you re cladding your house in rock or brick you have that air gap behind the masonry and it s a great place to use a radiant barrier.
Basically all model codes agree on the need for a weather resistant barrier paper usually specified as 15 felt or grade d kraft paper behind stucco brick stone and other porous veneers.
On the other hand brick stucco and other masonry based sidings can be used with house wrap but your builder will need to use the right type.
A micro porous house wrap installed behind masonry can drive moisture into your home s wall cavities.
By fine homebuilding editors.
Installing house wrap with rigid foam insulation.
When working with stone veneers built over wood frame construction the 2009 international building code section 1405 6 requires two layers of housewrap or other wrb.
This can be done with wooden furring strips to help give you about half an inch to an inch of air space.
The paper requirement is typically omitted for other types of siding when they re installed over rated structural sheathing.