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How To Add Stone to a Wooden Deck

By Edited Jun 19, 2015 0 0

If you have always dreamed about having a stone porch or deck, but didn't know if it was possible, it is. There are many different types of stone you can use. You can choose from brick, pavers, natural stone veneers or even ceramic tiles. The installation method is basically the same. If you choose ceramic tiles, be sure to choose a tile with a rough or sand finish because a glossy finish will be very slippery and dangerous on an outdoor deck.

This can also be done to create a stone porch.

The first and most important step is to re-enforce your current deck and repair any damage. Stone should not be laid over any wood than is questionable. It is better to replace it, than to have structural issue down the road.

To re-enforce it, double up the 2"x12" joists and depending on the load it will bear a better re-enforcement would be to double the 2"x12" joist and add joist so they are 8 inches on center, rather than 16 inches on center.

Add upright 6"x" posts, cemented in 30 inches into the ground every 24 inches under it and secured because the load it will bear is roughly double of what it was originally intended to support.

If you plan on having stone on newel posts, double up the newel posts.

Roll roofing tar paper from 6" up the wall of the house past it edges. Secure in place with a heavy duty staple gun. Don't forget to tar paper it stairs.

Place sheets of cement board on it surface. Tightly butt each cement board up to the next. Use masonry screws and an electric drill gun to secure in place. Cut cement board to fit stair treads, risers and stringers. Screw them in place at this time.

Mix mortar according to package directions.

Use a trowel to fill any seams or gaps between the cement board.

Draw a chalk line diagonally from corner to corner and snap the line. Repeat in the opposite corners.

The point at which the chalk lines intersect is the center and your starting point.

Use a trowel to apply mortar to the back of the first paver, brick veneer, stone veneer or tile. Place the first piece over the center point. Apply mortar to the second piece and position it above the first piece. Apply mortar to the third piece and place it below the first one. Continue applying mortar, place right, then left, above and below to work in an expanding pattern.

Use a wet saw to make cuts as need.

Apply stone to deck star treads. Allow the mortar to dry.

Use metal mesh wire and staple it tightly to all upright pieces including the house foundation if any is exposed, stair risers, stringers, newel posts and exposed deck support posts.

Apply a thin coat of mortar over the wire pressing it into the wire and the surface behind the wire.

Trowel on a second layer of mortar. Use the notched end of the trowel to form lines.

Apply a coat of mortar to the back of the stone, brick or tile and put it in place.

Allow at least 48 to 72 hours before using it.



I cannot stress enough the importance of completely re-enforcing it. If it is not re-enforced, it will collapse from too much weight. This should not be attempted with high decks or second floor decks.

Always leave an opening for access underneath, use lattice.




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