Fiber Cement Siding Cost Calculator

Around $20,825 on an 1,800 sq ft single story house with one old layer stripped — about $9.64 per square foot of wall — with most jobs that size falling between $17,075 and $25,825. Over bare sheathing with nothing to remove it is closer to $18,950, and a second story adds about 12%.

It is about $6,850 more on a typical house, and the answer depends on how long you are staying. Fiber cement lasts 50 to 75 years against vinyl's 20 to 40, so at fifteen years or more you buy one wall covering instead of budgeting for a second. Selling within ten years, the premium does not come back — both materials recoup much the same share of cost at resale. Beyond longevity it does not melt or burn, holds paint, and resists hail where vinyl cracks.

Because it is genuinely harder work, not a markup. The material is $3.45 a square foot against vinyl's $2.20, which is only $2,700 of the difference on an 1,800 sq ft house — the rest is labor. A 12 ft plank needs two people to carry, it is cut with shears or a dust-collecting blade rather than an ordinary saw, and every course is nailed to a struck line because the material will not flex to hide an error. It takes about 1.7 times the crew hours of vinyl.

Because boards arrive primed on the faces and edges, and the moment one is cut to length that cut end is raw fiber cement — which wicks water. Sealing it takes a brush and a few seconds. Skipped, the board swells at the joint and the paint fails from the end inward, showing up in year seven rather than year one. It is the most common fiber cement failure and it is entirely an installation question, so ask how cut edges are being sealed.

Blind nailing — through the top of the board where the next course covers it — is preferred and nearly invisible. Face nailing is permitted and is sometimes required to meet a wind rating, and then the nails must be set flush: overdriven nails crush the board and let water in at every fastener, and nails that miss the stud hold nothing. It is one of the few jobs where a nail gun set slightly wrong produces several hundred small problems at once.

Factory-finished is noticeably better and costs roughly 15 to 25% more in material. The finish is applied in a controlled environment to all faces, carries a 15-year warranty, and does not chalk the way site paint can — and it saves a paint job around year twelve, which on this house is several thousand dollars. Primed boards arrive gray and get painted on site, which is cheaper and gives you any color there is. If you are staying, factory finish usually wins.

Fifty to seventy-five years for the substrate, with warranties commonly 30 to 50 years on the board itself and 10 to 15 on a factory finish. What limits it in practice is not the material but the installation: unsealed cut edges and overdriven nails are what make a 50-year product fail in eight. Painted fiber cement needs repainting every 10 to 15 years, which is less often than wood and more often than never.

Cutting it releases crystalline silica, which causes silicosis, and this is regulated rather than advisory — OSHA requires a saw with integrated dust collection, or wet cutting, or respirators. You are paying for that compliance whether it happens or not, and it is visible from the street: a crew cutting dry with a circular saw in a cloud of dust is taking a real risk with their own lungs, and it tells you something about how the rest of the job will be done. Keep windows closed on the side being worked.

Technically sometimes, practically no. Fiber cement is heavy and needs to be fastened into studs at a known depth, which an intervening layer makes unreliable, and manufacturers' instructions generally require a solid nailable substrate and a proper weather barrier. Beyond that, the usual argument applies with more force here: you are installing a 50-year material, so finding out what the sheathing is doing is worth the strip.

Sometimes, and it is worth asking. It is non-combustible, which matters in wildfire-exposed areas where some insurers price or underwrite differently for ignition-resistant exteriors, and it resists hail where vinyl cracks. The discount is rarely dramatic but it is occasionally the difference between being insurable and not in a high-risk zone. Ask your carrier before the work rather than after.

Fiber cement trim boards or PVC, not wood. Wood trim on a fiber cement house is the part that fails first, which is a strange outcome when the point of the siding was not having to maintain it — and it looks worse each year as the trim weathers at a different rate from the walls. Fiber cement trim matches in texture and movement; PVC never rots and takes paint well. Either is the right answer and wood is not.

About 105 crew hours on an 1,800 sq ft house, which is around 1.7 times vinyl and roughly a week and a half for a small crew including the strip. The weight and the cutting are what slow it: two people on every long board, a dedicated cut station with dust extraction, and a struck line for every course. Weather matters too, since the wall cannot be left open overnight in rain.