Cobra Vent Air Space Behind Siding

It creates an air space so that the cedar shingles can dry out from underneath.

Cobra vent air space behind siding.

So we open the top vents on the bottom vent only wall and sealed the top vents of the top and bottom vent wall for the 3rd year of the study. It is about 3 4 thick and mosly air. Skeptics said that is because your walls may not have been built identically the same. It s the vented part of this equation that has gerald pehl thinking.

A vented rainscreen an air gap behind the siding has become a standard detail in many new houses. Brick veneer with a drainage plane drainage space and condensing surface with wood siding the drainage space is typically intermittent and depends largely on the profile of the siding. The air space behind the shingles allow moisture that soaks in the front of the shingles to dry to the backside as well as the front. At the top of the wall i used a gap between the top trim piece of the siding and the rake board as a top vent.

The devil is in the details in this case the air intake and flow behind the skirt board. Air can easily enter behind the back bottom edge of the water table and flow up through the rainscreen air space. 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. A well ventilated air space between sheathing and cladding is an important part of the strategy needed to allow walls to shed moisture in all seasons and conditions.

Match the sv 3 with cor a vent s sturdi strips polyproylene furring to create the siding vent system the first commercial rain screen system on the market. It provides 18 sq. Don t know the price just heard that its very expensive. The top and bottom vent was consistently drier and was able to dry out injected water much more quickly.

It helps remove moisture that works its way through the siding and in the process helps siding last longer. Other claddings like wood siding need help. Drainage planes building paper house wrap etc allow any moisture that does accumulate behind siding a chance to drain away harmlessly. If you have ever seen cobra brand conceiled ridge vent its basically the same material just in bigger rolls.

Venting at bottom of rainscreen wall via continuous airspace behind water table. The ventilated cladding allows drying of both the siding from the back surface and the wall assembly through the sheathing and building paper into the air space behind the siding. Some sidings including vinyl aluminum and brick veneer are inherently self ventilating. Inches per linear foot 67 720 m 2 lm of net free ventilating area and its unique easytear sizing feature allows you to hand tear product in 3 76 mm increments no knives necessary and less waste.

The 7 16 thick sv 3 rainscreen siding vent solves these problems with a minimum amount of work and expense. We re using benjamin obdyke home slicker a plastic mesh matrix that spaces siding about 1 4 in.