
How much should decking overhang fascia before installation?
This means the installed deck boards should have at least 1.75 to 2.75” overhang before the fascia is installed. Ensuring Decking is Parallel Start by installing the first deck board on the front outside edge of the deck framing. Ensure an equal overhang along the length of the board and nail or screw it in place.
Can you put a picture frame deck over fascia?
If you’re making a picture frame deck with fascia, the initial install of composite decking would cover the rim board and overhang the decking 1 ½” to leave room for the 9/16” fascia board. The result is a 1” overhang finish that’s safe and visually appealing, and matches the stair nosing.
Should decking boards overhang stair nosing?
Overhanging decking is a good practice in decking building. The overhang not only enhances the look of the deck but also helps the deck to last longer. Protecting both the joist and the decking, especially wood decking. Decking boards should overhang the deck substructure ¼ to 1 ¾” matching the stair nosing overhang.
Why do deck boards have to overhang?
Overhanging Deck boards helps to prevent from fascia rotting The overhang also stops water from getting behind the fascia and rotting the rim joist. It’s these areas of a deck that are most likely to rot. Where framing members are tightly joined, with just enough gap to allow water to get in, but to tight for water to escape.

Should decking overhang fascia?
Between one and two inches of deck board overhang is ideal when you attach an outer fascia board, or at least 1 ¾” to 2 ¾” of overhang before installing the fascia.
Should deck boards hang over?
Once installed, the first board should overhang the front of the deck framing by approximately 1 1/2" (38 mm) and about 3" (76 mm) on each side. Screw the first deck board in place. Don't worry about the 3" overhang on each side.
How much overhang can you have on deck boards?
The edge of decking should never overhang more than one-third of the decking material. For your standard 5.5” decking, that is 1 ¾” overhang.
How far can a 2x6 deck board overhang?
11/2 inchesSo, for example, a 2x6 deck board could easily extend 11/2 inches beyond the edge of the supporting joist.
What is the correct way to lay decking boards?
What is the correct way to lay decking? Any decking board manufacturer or professional will tell you: “The proper way to install a decking board is ridge side down.” The ridges are designed to allow for airflow, to stop moisture sitting in the ridge, and allow for a stronger structure.
Should I nail or screw deck boards?
Decking screws are better than nails when building a deck. Decking screws hold down your decking more securely than nails and will stop your decking from warping. Also, you can easily remove screws for deck maintenance without causing damage.
How do you install fascia on a deck?
0:277:05How to Install Fascia Boards for a Deck | Trex Academy - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo what we're using for this is a rot resistant material. These are 3 16. By 1 inch wide. Okay okayMoreSo what we're using for this is a rot resistant material. These are 3 16. By 1 inch wide. Okay okay now were these pre-cut to length. No in fact we just have a piece of exterior grade trim right here.
What causes deck boards to cup?
Cupping is caused by moisture trapped below decking boards. Inadequate drying of decking boards will cause warping. Warping and twisting of boards occurs as the boards' internal moisture content acclimates to their new climate. The solution to this dilemma is to replace the boards.
How much overhang should a composite deck have?
Overhanging composite decking is an important element to the deck's design for aesthetic reasons and protection of the deck's substructure. Most composite decking should overhang the deck's substructure ¾” (18mm) but may be limited to only a 1/2″ (12mm) or as great as a 1 ½” (38mm).
What is the cantilever rule?
The rule of thumb is that you can't cantilever more than twice the depth of the framing member. And the back span has to be at least twice the cantilever distance.
How far can a 2x6 decking span without support?
How Much Weight Can a 2×6 Support Horizontally? A 2×6 can support up to 50 pounds per square foot of weight without sagging with a maximum span of about 12 feet when spanning a distance horizontally, with the 2×6 standing in a vertical position. This number includes both live and dead weight.
How far can you span a 2x10 for a deck?
How Far Can a 2×10 Beam or Header Span? A 2×10 beam – made up of two 2x10s nailed together – can span up to 11' without support beneath a deck that is 4' wide. For a more normal-sized deck, the same beam can span 8', supporting a deck that is 8' wide.
Why does my decking Creek?
All wood can eventually twist and turn with the weather, warping as it ages and is affected by moisture. Over time, this can lead to wooden decks that creak as you walk across the boards.
Why is the wood on my deck curling up?
When the external forces become too powerful for the wood, the wood will move, typically cupping upwards at the outside edges. Too much sun on the top, combined with too much moisture below.
What happens if you don't space deck boards?
Without the right deck spacing, the boards may expand, cup, and buckle out of place. As a result, you may have to replace broken decking, or reinstall the boards with wider spacing to prevent further cupping and buckling, which can be time consuming and expensive.
How much overhang should a composite deck have?
Overhanging composite decking is an important element to the deck's design for aesthetic reasons and protection of the deck's substructure. Most composite decking should overhang the deck's substructure ¾” (18mm) but may be limited to only a 1/2″ (12mm) or as great as a 1 ½” (38mm).
How much should a deck board overhang?
Decking boards should overhang the deck substructure ¼ to 1 ¾” matching the stair nosing overhang. Overhanging deck boards not only make the deck look better but also helps to protect the substructure.
What is overhanging decking?
Overhanging decking is a good practice in decking building. The overhang not only enhances the look of the deck but also helps the deck to last longer. Protecting both the joist and the decking, especially wood decking. Decking boards should overhang the deck substructure ¼ to 1 ¾” matching the stair nosing overhang.
What happens when water gets under decking?
But the water that gets under the decking on top of joist is trapped. Trapped with nowhere to go except into the wood, bringing the fungi spores to life, destroying your deck’s joist. Overhanging decking keeps the water of the joist preventing it from being trapped under the decking.
What is the best ratio for decking overhang?
Joist overhang should be limited to a 2-1 ratio. Especially decking overhanging on stairs, you want enough material to prevent them from being pulled off when someone steps on the edge of the decking. Being true with all decking, you don’t want someone stepping on the edge, and the decking board roll off the deck.
What is decking shingle?
Think of it as a roof with shingles. The decking is the shingle as the rain falls on the deck. The overhanging decking carries the water over and off the joist. Which is important for water is the number one killer of decks. Directing this water off and away from the joist prevents rot growing on the wet wood.
How far past the rim of composite decking?
Replacing the unsightly decking end cuts with clean-finished decking edges. There are some challenges with overhanging composite fascia a 1 ½” (38mm) past the unfinished rim.
Why do people build decks?
Most of construction is an attempt to make things look and work well. Overhanging decking makes it easier to build a good looking deck.
Why is Overhanging Fascia Best Practise with Decking?
Glad you asked. There are two main reasons, appearance and protection. Decking overhanging the fascia will look better and will also last longer.
How much overhang is needed for composite decking?
As composite boards vary in allowable overhang. From flush to 2″ (50mm) and everything in between. The most common is around an inch overhang.
What is the size of composite fascia board?
The actual dimensions of composite fascia board lean towards being installed under overhanging deck boards. As the 7 ¼” (184mm) matches the standard 2×8 rim joist. Yes, again, not the actual size.
Where should I start my decking layout?
This is why I always start my decking layout at the front of the deck. To provide for the required overhang of decking. If you start the layout at the edge of the house, the chances of having a consistent overhang once you get to the edge of the deck is low. Start with your desired overhang and finish with your odd ripped piece hidden under the flashing. Not the other way around.
Does overhang cover over?
There are small differences in material thickness, which overhang will cover over, making it less noticeable. Or even with midspan joist blocking slightly pushing out the joist, which becomes really apparent without overhang.
Can composite fascia board be walked on?
Composite fascia board is not designed to be walked on. The downward pressure can break the fascia board or tear it off the screws, which are only intended for hanging the fascia. Remember your Mom yelling, “Stop hanging off the curtains. They are not designed to hold you”.
Does fascia board show dirt?
But if the fascia board sits proud of the decking, it’s noticeable. You will see that, and in time as dirt collects, you will see it even more.
How much gap between wet deck boards?
Keep this in mind when you are installing decking boards and the gaps. Using ¼” gaps between wet boards is too much. This ¼” gap will soon grow to about ½” once the lumber dries out.
How to determine the angle of railing posts against deck boards?
Use a sliding bevel to determine the angle of the railing posts against the deck boards. Then transfer that angle to the deck board, measure the width of the post, and trace the other cutting line.
How much does a 6" deck board shrink?
Almost all decking lumber is wet when it is installed and will shrink as it dries out. It is not uncommon for a 6” wide board to shrink ¼”. This translates to as much as 1/8” on either side of the board.
How much space does lumber need to expand?
If the lumber is dry the gaps will stay at 1/8” and if they expand with rain there is still sufficient room to allow for that expansion. But most importantly, a slight gap allows water to escape and not pool.
How to keep gap uniform in house?
Continue with each board working your way to the house and using a spacer, such as a nail, to keep the gap uniform.
Where to install composite decking?
To get the best finished look start installing decking boards or composite material from the outside edge of the deck first.
Can you use a galvanized nail on cedar?
However, with cedar and a 3.5” board it is possible to use a galvanized finishing nail without the spirals. Cedar is a softer wood and a narrower board has less pulling power in the event that it tries to cup upwards.
Where is the fascia board on a deck?
Deck fascia board is often overlooked and just slapped on to the side of a deck rim joist.
What does soaking a deck board do?
What this does is stop water from hugging the underside of the deck board and moving towards the deck fascia board or band board and soaking the boards. You know the stains and dirt and mold that can develop when wood fiber remains wet all the time.
How deep should a groove be for decking?
If the groove is not too deep, (¼" max) and it doesn't have to be deep to be effective, it will not substantially weaken the bottom edge of the deck board.
Can you use synthetic fascia board on a deck?
Even if you are using a synthetic fascia board, the dirt from the deck can get mixed in with the dripping water and can leave unsightly drainage patterns that you have to pressure wash off. This is easy enough to do for decking boards that run parallel to the edge of the deck and particularly if you are using a picture frame border around ...
How to make fascias with 2x8?
Rip two 2x8's to make two even boards, one stacked on top of the other to form the fascia .
What angle should I cut a beam?
Also, if you cut a 45 degree angle on the bottom of the beams it looks nice. I usually come up 4" and in 4" then cut the corner off.
