![]() ![]() Use this measurement to cut four pieces for 1×6. Measure the distance between your two posts. Use 3″ deck screws to fasten the 2×3 to the post. Place the 2×3 against the post so that the front edge lines up with the two marks. Do the same 36″ from the bottom of the post. At the bottom of the post, measure 1″ from the middle of the post toward the inside of the porch and make a mark. But first, you’ll need something to fasten the boards to. Quantities and lengths will depend on your specific project needs.įor the horizontal deck railing, you’ll be using 6″ treated decking boards. The last thing you want is to build your railing, and have an inspector not pass it because he’s able to fit a 4″ object through your railing. To be on the safe side, I recommend using 3.5″ for your spacing. The IRC requires that the space between your balusters or boards must be less than 4″. Not only do you have to make sure your railing is the right height, but you also must follow the code for baluster spacing or in this case spacing between each horizontal board. But you should also check your local building codes because counties and cities may have different requirements. This should be measured from the deck or porch surface to the top of the railing. The IRC (International Residential Code) requires that deck railing be at least 36″ in height. How tall does deck railing need to be?īefore you start building your deck or porch railing, it’s extremely important to make sure you are following your local building codes for railing height and spacing. In this tutorial, I’ll show you step by step how you can build this type of railing for your deck or porch. Not only does this style have a more modern look, but it’s also very easy to build yourself. For our house, we decided to go with a wide horizontal style. ![]() The pressure of the displaced material can cause the top surface to protrude if the tip of the screw is too close, or even push out a plug of surface material.There are many different styles of deck and porch railings. ![]() Also, don't screw much more than about half way into the composite plank. Or use one that taps a thread, like this style:īoth styles are often advertised as not requiring a pilot hole, but I wouldn't trust that. a thread that is coarse and thin, more like a knife that causes minimal displacement of the material, like this style:.So it isn't good to use normal wood screws, which have a thick, wedge-shaped thread. The composite material doesn't compress like wood pressure just makes it fall apart.You need exterior grade screws, either stainless steel or specially coated.So to your question of what kind of screw to use. Once screwed in, a small amount of prying force will pull the planks off, either stripping the screw hole or leaving hunks of material behind around the screws. You don't need massive holding strength on each screw, which is good because these composite boards have little structural strength. The screws in this application are mainly to keep the planks from sliding. The planks are heavy and you aren't really trying to secure them against "falling up" or being pulled off. So verify the designed usage if you use these. There are special screws for composite decking, but they often contain multiple threads designed to have the right thread in the right material when you fasten down through the composite board. These have a fastening system that involves hidden grooves, which won't be hidden if you use it for a top rail. Trex (and some other brands) have planks designed specifically for use as decking. First, make sure you get the right plank type. ![]()
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