Name: James Hardie HZ10 Straight 6.25-in W x 144-in L Primed Fiber Cement Lap Siding
Brand: James Hardie
SKU: 5003807229
Rating: 4.5 (469 reviews)

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Hardie® Plank Cedarmill® Fiber Cement Lap Siding has a woodgrain appearance making it ideal for exteriors where a traditional wood siding look is desired. ASTM E136 noncombustible cladding will not attract pests including termites and woodpeckers. HZ10® engineering means it is made to withstand high heat, humidity, moisture, hail, tropical storms and hurricane winds. Board is factory primed using a primer with a slight yellow hue. To finish, apply an acrylic, water-based exterior house paint to the primed board within 180 days of installation.

Use Hardie® Fiber Cement Siding to design or remodel a home's exterior
Hardie® Plank fiber cement siding is Engineered for Climate® allowing boards to hold up to harsh weather conditions where it is installed
Use a 2-1/2 in siding gun or siding nailer to attach to wood, steel or masonry substrates
Cedar look siding board has a woodlike grain finish for a natural wood look
5/16 in x 6.25 in x 12 ft Cedarmill® lap board installs horizontally and resists pests that can damage wood siding
Cut outdoors using a circular saw with a fiber cement saw blade and a vacuum dust collection system
Fiber cement siding up to 7/16 in may also be cut outdoors using an electric fiber cement cutting shear
Board resists damage from sun, heat, humidity and strong hurricane force winds to stay strong and intact
30-year limited non-prorated, transferable, warranty

General
Color/Finish Family	Yellow	Finish	Primed
Type	Lap siding	Package Quantity	1
Primed	Yes	Manufacturer Color/Finish	Primed
Texture	Cedarmill	Edge Profile	Straight
Sample Available	No	Series Name	HZ10
Paintable	Yes

Dimensions
Actual Thickness (Inches)	0.312	Actual Length (Inches)	144
Actual Width (Inches)	6.25	Weight (lbs.)	15.42
Coverage Area (Sq. Feet)	6.25

Features
Sold As	Piece	Water Resistant	Yes
Stainable	No	Recommended Exposure (Inches)	5

Warranty
Warranty	30-year limited	Finish Warranty	None

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Miscellaneous
UNSPSC	30151800

Check out the Best Selling Fiber Cement Siding on Lowes.com

Review

4.5 out of 5

469 Reviews

92% Recommend this product

Ratings may include incentivized customer reviews.

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+ 28

What Customers Are Saying

The James Hardie fiber cement siding is praised for its durability, weather resistance, and ability to hold paint well. Many customers successfully used the product to replace old, deteriorating siding. However, some experienced issues with the siding being fragile and prone to breaking, especially during transport. The high price of the product was also noted as a potential downside by some.

Customer review summary generated by AI, including incentivized reviews.

469 Customer Reviews

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Great match

Would Recommend

This matched perfectly to what we needed to replace.

OldShen2209October 2, 2026
Verified Purchaser

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Ground contact

I used this for a ground contact skirt under the chicken coop. Perfect.

JRM 71October 1, 2026
From HZ10 Straight 7.25-in W x 144-in L Primed Fiber Cement Lap Siding Verified Purchaser

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Would Recommend

This was a good product

ShedSeptember 21, 2026
From HZ5 Straight 7.25-in W x 144-in L Primed Fiber Cement Lap Siding Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/235bb7a3-67ac-5cad-875e-5be490e88525

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So difficult to use, but great once it's up

Would Recommend

I'm on my 3rd shed using this lap siding. It's really a 2 person job, as there's no assist in the siding itself. Getting level and holding with 1 arm while trying to keep exactly 6.5" up on the last one is extremely difficult and tiring when you have a hundred+ to do. Since these are going to be painted anyway, why don't they strike a few inked lines where a standard overlap might be? Would save so much headache.

treyusSeptember 17, 2026
From HZ10 Straight 8.25-in W x 144-in L Primed Fiber Cement Lap Siding Verified Pro

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Easy Hardy board siding

Would Recommend

Good quality fiber board siding. I used this to replace a few damaged sections. It cut easily with a carbide blade and was easy to secure

JamesSeptember 14, 2026
From HZ10 Straight 8.25-in W x 144-in L Primed Fiber Cement Lap Siding Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item James HardieHZ10 Straight 6.25-in W x 144-in L Primed Fiber Cement Lap Siding
		Ratings	469
		Type	Lap siding
		Finish	Primed
		Texture	Cedarmill
James HardieHZ10 Straight 6.25-in W x 144-in L Primed Fiber Cement Lap Siding	James HardieHZ10 Straight 8.25-in W x 144-in L Primed Fiber Cement Lap Siding	James HardieHZ10 Straight 8.0-in W x 144-in L Primed Fiber Cement Lap Siding	James HardieHZ10 Straight 5.25-in W x 144-in L Primed Fiber Cement Lap Siding	James HardieHZ5 Straight 8.25-in W x 144-in L Primed Fiber Cement Lap Siding	James HardieHZ10 Straight 7.25-in W x 144-in L Primed Fiber Cement Lap Siding	James HardieHZ10 Straight 5.25-in W x 144-in L Primed Fiber Cement Lap Siding	James HardieStatement Collection HZ10 Straight 8.25-in W x 144-in L Arctic White Fiber Cement Lap Siding	James HardieHZ5 Straight 8.25-in W x 144-in L Primed Fiber Cement Lap Siding
74	115	104	104	468	74	55	13
Lap siding	Lap siding	Lap siding	Lap siding	Lap siding	Lap siding	Lap siding	Lap siding	Lap siding
Primed	Primed	Primed	Primed	Primed	Primed	Primed	Painted	Primed
Smooth	Smooth	Roughsawn	Smooth	Cedarmill	Smooth	Smooth	Cedarmill	Cedarmill