Cutting Vent Hood Hole In Fiber Cement Siding

Siding already on wall cutting into installed hardi fiber cement hi to vent an attic i need to install some gable end vents into exterior walls already sided with hardi plank or some other similar brand of plank that simulates beveled horizontal siding.

Cutting vent hood hole in fiber cement siding.

The carbide grit works really well and does a great job of keeping buildup to a minimum. Verified purchase used this to cut 4 1 8 inch exhaust vent holes in hardy fiber cement trim board 1 inch thick concrete board and it worked perfectly. Lots of info out there re how to attach this type siding to the studs on new construction but i am not doing that. Cement fiber siding is a commonly used building material.

The important thing is to watch your speed and if you re using a hand held drill watch for it grabbing. When cutting fiber cement siding with circular saw use a blade that has only four or six teeth. I need to attach an ordinary dryer vent to the cement fiber siding on my daughter s house. While it was a little tedious it was very effective and satisfying.

To keep dust to a minimum use a circular saw that s equipped with either a dust collection bag or electric fan that blows dust into a bucket. For a slow but virtually dustless way to cut siding use power shears. Using a cost per square foot metric it s less than a penny per square foot. This hole saw is deeper than your standard hole saw so it cuts right through the wall through the fiber cement siding and the plywood substrate below it.

Even if you do invest in higher end tools the total cost per job is low. Selecting the right carbide tipped hole saw to cut your vent hole. It can be cut. There are many cost effective circular saw and vacuum options that meet table 1 requirements for cutting fiber cement.

Rather than using an expensive masonry hole saw i used a masonry drill bit to drill a series of small holes around the perimeter of the dryer vent hole and use a big chisel and 3 lb sledge hammer to chip out the opening. It is a concrete product that is light flexible and has a woodlike finish.