Peaking your Interest

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Balancing insulation with ventilation

Working together for a better home.

The words 'more energy efficient' usually gear towards the insulation portion of your project. Ventilation is usually not in the higher priority and sometimes ignored when renovating. Insulation & Ventilation are required by your building codes and ventilation is also required by every shingle manufacturer's warranty.

No matter how insulation may be installed, a home still needs a flow of air transferring in and pulling moisture and heat out from the home. Should a home lose heat in the winter? Yes, you do want to allow some heat to escape from your home. This airflow allows the roof to maintain an even and balanced temperature minimizing the chance of ice dams during the winter and also lowering the possibility of mold to form from the moisture that is generated in every home.

Insulation baffles provide the channel for this air to flow from the lowest portion of your attic to the ridge. Baffles are usually installed near the soffit and extending above the insulation. The image above illustrates you can see that insulation runs the entire rafter area. This would require a home to have baffles running the entire span in conjunction with the insulation to keep the channel from becoming blocked. 

"On multiple occasions, I have seen relatively new roofs installed with little or no ventilation, an issue arises due to premature deterioration.."

~ Matthew Steger, owner/inspector of WIN Home Inspection

​When an attic space is not used as a living area or when insulation is solely in the attic floor you would not have the same need to install baffles the entire span of the roof. As seen below, baffles can be installed to a point where they clear the insulation allowing the free flow of air to transfer in from the soffit area. The ideal is to keep the entire area between each rafter bay open to keep the roof balanced and keep the soffit from clogging with insulation or other debris. SmartBaffle by DCI is the only baffle that provides a two-inch air space spanning the rafters. Available in both 16" and 24" widths, this product is a must for doing a project right. 

Below are some images of a SmartBaffle installation where a new roof deck is being installed. These baffles can be installed after the fact, as long as the insulation is cleared out first. Would you like to learn more about the Best Baffle on the market? Call us at 888-446-9088 or fill out our request form and we will start our conversation about how to improve your ventilation.

SmartBaffle tacks in place

Standard roofing nails or screws can securely hold SmartBaffle in place.

​From Eave to Ridge

If you are adding insulation to fill the rafter bays, you should run the SmartBaffle all the way to the ridge.

Install the new roof deck

After SmartBaffle has been installed add your decking to continue your project.

A new roof investment requires real ventilation

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Sunday, 19 November 2017
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