Deck Undercover Systems – How to Build Under Deck

I. What is an underdeck or undercover system?Undercover systems INC

An Under Deck System, sometimes referred to as an Under Deck Ceiling, is similar to a dropped ceiling beneath your second-story deck and is made of wood. Actually, the rainwater that would ordinarily fall between the deck board is collected by the roof and channeled into a rain gutter, away from your deck.

Lightning underdeck with electrical access

Simply described, it is a waterproof ceiling that is installed underneath your deck by taking advantage of a useable outdoor living space without sacrificing headroom.

II. The process of building Ceiling under the deck for your outdoor living space

Entertaining galvanized steel purlin

1. Purlin construction under the existing deck

Start by joist-marking every purlin point on the deck. Afterward, attach the exterior purlin to the house. Stitch a cord between them. At each of the other purlin sites, measure the deck joists to the string below them. The spacer block widths are determined by subtracting the purlin thickness from the above specifications.

2. Attach the panels into the purlin system

Attach the first panel to the purlin with the roofing screws, starting at one end and working your way out. Every other valley should have a screw in it. Squeeze the screws together just enough to compress the washer a little. Waterproof deck systems are created by overlapping the next panel onto the one you just put and attaching it the same way as the previous panel. You may find that the last meeting is excessively long when you end. You can overlap it a little more or cut it to match your needs. It is simple to cut panels to the desired length or breadth with a circular saw and a carbide blade.

Screened porch for deck in outdoor living area

3. Installing gutter system and downspouts

Preparation is vital to place the gutter system on your underdeck Make sure you leave enough space for them. Depending on how your deck is constructed, you may have to get creative to develop an attachment method that works. The in-stock 12-ft. panels were not long enough to reach Rune’s deck’s beams; the contractor fastened vertical 2x4s to every other joist to provide a post of attachment for the gutters. Then he attached the gutter hangers to the 2x4s with a drywall screw. Drainage should be supplied by sloping the gutters toward the downspout. The gutter systems does come with multiple colors.Screened enclosure under deck

III. How to waterproof your second story deck

Even pressure-treated wood rot and deteriorate. Decks with standing water can wet, rot and disintegrate. As a fungus, dry rot can spread like cancer throughout a deck. Microorganisms that devour cellulose from wood produce dry rot. If you skip this waterproofing step, it can cause wood rot even worse year-round.

Trex RainEscape drainage system

1. Get a deck drainage system to maintain dry space

One of the most well-known underdeck ceiling waterproof methods is Trex rain escape. Water will not flow through elevated boards because of the Trex drainage system, which is comprised of a network of troughs and downspouts. This prevents rain, spills, and snowmelt from draining through the elevated boards, creating in a dry region beneath.

2. Installing quality waterproof system underInstalled Timber Tech dry space outdoor space

If your underdeck system has already been constructed, a system like as TimberTech’s Dry Space can be used to protect the bottom of the area. One advantage that these waterproof deck systems have over merely screwing roof panels to the bottom of the joists is that you can remove a part of them if you need to get to the joists if something goes wrong with the roof. For further information, please see

3. Installing flanges

You can’t work dry underneath the floor if you’re using this spacing. Filling the gaps with rubbery flanges is one method of waterproofing. Use spacers between planks to stop water from dripping. Water can be directed toward the margins of the deck by sure flanges, which function as mini-gutters. Contractors typically use a rubber mallet to pound flanges into the margins of decking.

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