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How to install Duragreen Fiber cement board on floors

It is essential to choose right material for installing floor which protects your home or industrial building from moisture, humidity damage , fire damage. So Duragreen Fiber cement board is a perfect choice helping you do anything without worrying because Duragreen fiber cement board will guarantee your projects last.

Below is what you need to install Duragreen Fiber cement board properly:

• Modified dry-set cement mortar and/or dry-set cement

• 2” wide, high-strength, alkali-resistant glass fiber tape

• Corrosion-resistant roofing nails or 1.25” minimum screws • Trowels •  Carbide-tipped scoring knife (recommended), utility knife, or shears

Here are 5 necessary steps for installing Duragreen fiber cement board

1 | Ensure subfloor is structurally sound


On existing structures: • Ensure subfloor is not damaged. Replace any loose, warped, uneven or damaged sections of floor. • Make certain subfloor is a clean and flat surface.




For all floors: • Use minimum 5/8 exterior grade plywood or 23/32 OSB with Exposure 1 classification or better, complying with local building codes and ANSI A108.11. • Joist spacing not to exceed 24 in on center. • The floor must be engineered not to exceed the L/360 deflection criteria (L/720 for natural stone), including live and dead design loads, for the specific joist spacing used.

2 | Determine layout of Duragreen fiber cement board • Stagger all Duragreen fiber cement board joints. Do not align with subfloor joints. • Never allow all four corners of boards to meet at one point. • We recommend an 1/8 in gap between board edges. • Keep sheet edges 1/8 in back from walls and cabinet bases. • Score and snap boards to required sizes and make necessary cutouts.

3 | Attach Duragreen fiber cement board to subfloor • Apply a supporting bed of mortar or modified thinset to subfloor using a 1/4 in square-notched trowel. • Embed Duragreen fiber cement board firmly and evenly in the wet mortar. • Use the fastener pattern as a guide. Fasten Duragreen fiber cement board with specified nails or screws every 8 in over the entire surface. Keep fasteners between 3/8 in and 3/4 in from board edges and 2 in from board corners. • Set fastener heads flush with the surface without overdriving.


4 | Tape joints prior to tiling

• Prior to setting the tile, fill all joints with the same mortar used to set the tiles. • Embed 2 in wide high-strength alkali-resistant glass fiber tape in the mortar and level.





Source: The Spruce

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