How To Install Hardie Board Siding Over Concrete Block

Installing hardie siding over concrete block.

How to install hardie board siding over concrete block.

Has anyone had a project like this. Any lower and you might see a few nail heads poking through the bottom of the next board any higher and your siding is likely to be loose and. A better solution is to prepare and resurface the concrete slab so that it can accept thin set adhesive or a mortar base onto which to lay tile. But doing so is a very laborious time consuming process that is likely more trouble than it is worth.

Hardie plank siding has a nail line across the top of the board that is 1 down from the top and nails are supposed to fall between and 1 from the top of the board to give the best hold. When installing hardiplank lap siding over concrete or masonry surfaces the company recommends that you first install vertical furring strips either 2x2 wood strips or min. Method 1 over furring method 2 direct to block hardieplank lap siding and xld trim with masonry construction james hardie products contain respirable crystalline silica which is known to the state of california to cause cancer and is considered by iarc and niosh to be a cause of cancer from some occupational sources. James hardie will assume no responsibility for water infiltration within the wall.

Installing siding wet or saturated may result in shrinkage at butt. 20 gauge galvanized metal hat strips over the masonry on a maximum of 24 centers we recommend 16 centers to help avoid warping. James hardie recommends the use of building paper type weather resistive barriers with all siding products. Most fiber cement manufacturers make mounting blocks for lights electrical receptacles a c lines pvc venting etc.

The house is about 35 years old so my concern is that bolting wood or other materials to secure the hardi board to onto the walls will crack the blocks destroy the mortar and create an utter nightmare. Technically cement board can be laid over a concrete slab as the base for a tile installation. They re cheaper and easy to install and you can cut the proper size hole in a plastic mounting block with a utility knife or a snips.