How Far From Roof Should Fiber Cement Boards Be Placed

Fiber cement siding tolerances and gaps.

How far from roof should fiber cement boards be placed.

Flash above doors and windows leaving a gap between the flashing and siding. Hardie siding requires a minimum 2 gap from all hard surfaces like decks or rooflines and at least 8 from any soft surfaces like grass dirt or gravel. This type of roofing material s inventor got the first patent in 1901. An enclosed overhang with a horizontal soffit.

Fixing procedure should be followed as per is 3007 1964. We ended up going with 1 4 inch thickness but it also comes in 1 2 inch. Cement board is a combo of cement and fibers that usually comes in 3 5 foot sheets. Now there are more ways to screw things up than just these five things.

Gutter embers and hot gases from fire horizontal. During my time working for james hardie i very rarely got calls from homeowners that wanted to submit a warranty claim for their hardie siding. In fact this is already assuming that your wood subfloor meets the minimum requirements. Embers and hot gases from fire exterior wall cladding fascia gutter rafter underside of roof deck figure 3.

While fiber cement roofing is relatively cheap there are a number of pros and cons with this material which you should. Continue with the siding courses aligning the top edges to the layout chalk lines. Gap where the end meets the corner board photo 7 inset and make sure the other end lands on a stud line. Before laying of sheets check the purlin spacing and the length of the sheets to ensure that the arrangement of sheets will provide the required end lap min.

Fiber cement siding should be installed 6 or more above the grade level of the house with a 1 2 gap between horizontal surfaces like decks steps or adjacent roofs. It isn t waterproof but absorbs moisture well and is a great support for tiles. It s also heavy and smells kinda icky when you cut it just so you know ahead of time. An eave with essentially no overhang.

For eave vents follow the guidance in fact sheet 8 vents. 150 mm as shown infig 5 and the specified. Cement board should never be counted on to stiffen up your floor. Fiber cement roofing uses panels made from fiber cement which is where the basic cement formula is reinforced with fiber such as cardboard and similar items these panels can then be turned into either roofing slates or sheets which are shaped to resemble corrugated iron.

Install the next piece so its end butts lightly against the first photo 7 inset. When installing fiber cement siding be sure to leave at least clear space between the siding and the flashing vertical siding should be installed and attached to the structural framing when a non structural sheathing gypsum board or foam type sheathing are used.