And there have to be some sort of wooden support members perpendicular to the rafters just not forming a continuous layer.
Tile roof without plywood.
The minimum plywood for roofing.
The panels are typically 12 to 24 inches wide and run parallel to the slope of the roof.
Standing seam panels are installed over standard plywood roof decking and an approved underlayment such as ice and water shield.
Rafters run from the peak of the roof.
This article series explains clay tile roofing types clay roofing tile inspection tile roofing diagnosis tile roof repair.
It determines how long your roof will last and how well it will protect the contents of your home.
My plan is to strategically staple roofing felt to plywood than thin set the tile over the felt.
Planning for repairs three decades away may seem imprudent but the cost of plywood today likely is much less than the cost and hassle of re insulating down the road.
There are two pieces of plywood butted together in center of foyer.
One popular way to augment plywood substrate is with a waterproofing uncoupling membrane between the tile and one layer plywood.
Tile covered roof installation specifications adapted paraphrased with permission from best practices guide to residential construction chapter on best roofing practices.
Both osb and plywood for the roof have been approved for use so it may come down to what you feel most comfortable using.
One more thing when sheathing over the spaced decking youa re going to want a metal flashing at all roof edges to protect and hide the plywood.
Standing seam roofing is commonly available in galvanized steel galvalume and copper materials.
Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.
Also when nailing the new plywood sinkers should be used and penetrate through the decking and into the rafters.
When the metal is eventually replaced roofs without plywood underlayment require the insulation to be replaced or repaired because it is attached to the metal.
Schulter expressly notes that ditra replaces that second layer of plywood.
While it s usually best to stay off your roof if possible you can still walk on the tiles if you need to make repairs.
Consider an uncoupling membrane.
Choosing the right type of plywood for the roof is one of the most important construction decisions that you will have to make.
Clay and concrete tiles are a great roofing material since they re more durable than shingles but they can break or crack if you apply too much pressure while you re walking on them.
My theory is the expansion of the plywood would be free to move under the felt without disturbing the tile above.
I will assume that there is some sort of membrane tar paper etc below the tiles even if there is no plywood.