Waterproofing is essential for wood deck systems since water can damage your house if it gets on them. Almost every deck needs to be waterproofed, but you should also consider waterproofing the bottom, especially if you have an elevated or roof terrace. Water that runs off the deck will not get into your house if you waterproof the area under the deck.
Drainage
Whatever way you install under-deck waterproofing membranes, the most important thing is stopping water from running off. You may need a drain in the middle of a gutter along the deck. If drains are under the deck, you need a way to get to them. This is an essential part of the project.
Any under-deck waterproofing membranes should slope slightly toward the gutter or drain. This will help water flow into the drainage system and away from your home. Pools of water that form under the deck over time can cause damage.
Waterproofing Membranes
Professionally installing under deck waterproofing membranes is one way to keep water out. This membrane keeps water from getting to the areas below the deck, like a roof or an open space. The water flows straight through the deck and collects on the membrane. A deck builder says the area under the deck is slightly sloped so that water flows away from the house and into a gutter. This moves the water away from home.
If you can see the underside of the deck and want to make it look better, you can cover it with roofing material and hide the membrane.
Waterproof Ceilings
You can also hang waterproof ceiling panels on the underside of the deck to keep water from getting to the surface below. Again, if the panels are slightly tilted, the water will roll into a gutter or similar system.
It is easier to do this than to use a membrane and then hide it, but you need to make the panels look exactly how you want them to. This method works best for decks with an open space below that lets you see the bottom of the deck.
Sealing
If you want your waterproofing system to work well, you must install a flash. This will keep water from getting between the edge of your deck and your house. If a door leads out onto the balcony, a pan flashing under the door threshold will help keep water out of this area. Usually, caulk or roof cement is used to put on flashing. Depending on how you waterproof the deck, you may need to caulk it.
Reduce Water Damage
Your deck takes a lot of damage from the weather, and the water drips around, and through it every time it rains. It may be doing more harm than you think because it soaks the ground and may be making its way to your house's foundation. An under-deck waterproofing membrane is a type of deck waterproofing, and you can use it to make a better gutter and drainage system.
Raise the Value of Your Property
Putting money into your home can pay off surprisingly, especially if you plan to move in the next few years. An under-deck waterproofing membrane makes the covered outdoor space more comfortable and appealing. This could be one of the things that gets a potential buyer interested in your home.
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