Floating Flat Roof Deck

A reliable roofing approved waterproof membrane may be the most essential component to extend the lifetime performance for flat roof deck assemblies designed as floating or pedestal systems.

Floating flat roof deck.

By paul wa i have an interesting problem. Inspect the roof to make sure it is in good condition and acquire any permits that may be required by the local zoning board. Many homes in new england have walk on flat roof decks with living space under them and 90 percent of these deck roofs leak ruining your rooms. I tore everything up replaced the wood that needed it and built up the base and covered everything in epdm.

These decks are often referred to as floating as they are not secured in place as a stand alone structure. I am taking a 25x25 roof over a garage that was done in decking then tile and leaked. Building a deck over a flat roof is very similar to building a deck over a concrete patio. Building a deck on a flat roof is neither difficult nor time consuming.

When a roof is flat it actually will have a very slight slope water is going to spend a lot more time in one place giving it more time to find a way underneath the roof. Careful detailing of membrane roofs at corners doorways and penetrations is critical for long term performance. When the frame was completed i used an electric hand planer to remove any high spots to ensure that the decking boards would lay uniformly flat. The key is in the word flat.

They are merely placed on top of another structure. Floating or pedestal roof deck assemblies can be an ideal low maintenance deck surface on high traffic areas when properly installed. Photo by dave holbrook. Two people can install a brand new deck in a weekend with little or no previous construction experience.

Epdm is the best choice for most rooftop decks. The landing in front of the shed is anchored to it with a ledger board using long lag screws. The roof deck surface should sloped away from the house a minimum 1 8 inch per foot so the water will. Some key details for a leakproof rooftop deck are.

Before beginning however it is important to do two things. Building a floating deck on an epdm rubber roof surface. The shed itself was built on blocks floating in the same exact manner as the deck.