Cedar Breather is a fire-resistant underlayment for wood shingles and shakes that provides space for a continuous airflow between the solid roof deck and the shingles and shakes.

Excess moisture in cedar shakes and shingles causes cupping, warping and potential rotting. The unique design of Cedar Breather addresses all three issues by providing a continuous airspace between the solid roof deck and the shingles, thereby enhancing the long term service life of the entire roof assembly.

Home Slicker is specifically designed for sidewall applications. Its vertical channels are designed for optimal drainage and drying.

Cedar Breather is designed for roof assemblies and specifically used under cedar shingles and shakes. The matrix is conical in shape to promote air circulation and optimize drying needed to prolong the life of cedar shakes and shingles.

Shingles lay smoothly together, fit tight and do not allow gaps between layers. It is not necessary to interleave felt. Shakes, due to their difference in thickness, leave gaps between layers. To be sure water and snow will not get into open areas, it is recommended to interleave #30 felt between layers.

Only if the shingles are in good condition and lay smooth. However, the best application is to follow instructions on the roll (cover decking with felt, staple Cedar Breather and then apply shingles).

3/12 is the minimum pitch at which Cedar Breather can be applied.

Yes. Drip edge and rake edge will help to kick the water away from the fascia into gutter. This is important since water running off cedar turns black and stains. (On applications without gutters and/or the soffits are narrow, it is more of an issue.)

If you are building in an area where insect infiltration is a concern, it is recommended that a 6 inch piece of screening be installed on the lower edge of the Cedar Breather above the fascia. The screen should not have holes any larger than 1/8 inch for optimum protection.

Stainless steel nails are the best choice. High tensile strength aluminum is acceptable if the edging and gutters are also aluminum. Do not mix metals (copper, galvanized or aluminum) as doing so may cause corrosion. Galvanized or copper may result in discoloration and streaking.

It depends on the thickness of the shingle. Use a nail that will allow for ¾ inch penetration into sheathing (.27 inches for Cedar Breather thickness).

Cedar Breather has a class A fire rating.