The extra layer of insulation helps reduce thermal bridging through wood framing and the furring strips create a ventilation space behind the siding that promotes drying.
Furring strips behind siding.
And increase your home s susceptibility to termites and wood rot.
Trapped moisture behind siding can cause peeling paint rotting wood deteriorating house wrap siding to mold or mildew.
Furring strips for use behind sheet siding.
An air space of even 1 8th of an inch will do the job so what you use as furring is really only a spacer and isn t too important as long as your siding can grab it or grab the sheathing behind with longer nails.
The first part of the system is the heavy duty sturdi strip furring strips which hold the siding away from the wall creating the necessary minimum capillary break 3 8 or 10mm that will allow moisture to drain away instead of becoming trapped.
A homeowner in southwest virginia wants to install engineered wood siding over exterior foam insulation but finds that the manufacturer s installation instructions raises concerns he hadn t thought of.
Installation details are key.
But writing in a q a post at green building advisor sonny chatum wonders whether this wall system often called a vented rainscreen is compatible with vinyl siding.
Wall assemblies that incorporate rigid foam insulation over exterior sheathing followed by furring strips and siding are becoming common.
William costello is building a new house in southwest virginia that will be framed with 2x6s and will include up to 2 inches of exterior rigid foam insulation.
The most important thing is that the material be consistent in size to avoid walls looking warped.
Choosing the right furring strips is key to preserving a warranty for this engineered wood siding.
Some designs are using the up and down roof firring sometimes in 2x3 material with crosswise firring strips to provide a deep airflow channel so a lot of air flows from the bottom of the roof to the top ridege vent or ridge cupola thereby significantly reducing the heat transfer between the roofing and the sheathing in the warm hot months.
When using a thicker siding install a second furring strip on top of the horizontal furring strips to all the siding to lay flat step 3 install furring strips every 16 on center using fasteners that penetrate plywood 1 2.