Flat Deck On A Sloped Roof

Roof deck framing unlike for decks at ground level doesn t entail a ledger attached to the rim joist of a house.

Flat deck on a sloped roof.

Foundations settle rafters bend or door openings are too close to the roof surface to increase the slope. In this article builder emanuel silva shares his method for building such a deck which begins with a leak proof low slope roof of epdm rubber. Match the roofing on the covered porch with the main roof. Summer calls for sultry nights under the stars and sun drenched cocktail gatherings making the backyard deck the ultimate destination this season.

Building a deck on a flat roof is neither difficult nor time consuming. Instead a pair of beams rest on supports called sill plates to create a frame for the deck. Very often you can find ponding water accumulating on these deck roofs. What causes flat roof decks to leak.

However that isn t always the case. Inspect the roof to make sure it is in good condition and acquire any permits that may be required by the local zoning board. Once you have your beams in place everything above them joists deck boards balusters and handrails is the same as for any other deck. Hardwood decking is then fastened to tapered pressure treated sleepers that rest on additional strips of epdm added to protect the roof from abrasion.

Ames contouring roof fabric. Flat roofs are incredibly versatile and many homeowners choose to transform their flat roof sections into roof decks. This is the basis for calculating the angle which is approximately a 1 19 degree slope. Although sloped roofs are generally easier to maintain and provide more reliable insulation flat roofs are advantageous in their own ways.

Ideally your roof should have a positive slope with a fairly flat surface no indents. It is optimal to have 1 4 per foot pitch on any flat roof. A deck on a sloped roof requires a different approach to the framing underneath the joists. The minimum pitch for shingles is 1 6 which is equivalent to 4.

They just require more thoughtful construction and maintenance. Determine the minimum slope of the roof based on the roofing material. Two people can install a brand new deck in a weekend with little or no previous construction experience. Before beginning however it is important to do two things.