O'Fallon Roofing: Article About Tile Roofs
Tile roofing systems are more complicated to install when compared with metal panels, asphalt shingles or wooden shakes. The manufacturers of clay and concrete tiles offer specific recommendations for the installation of these products. Experienced O'Fallon roofing contractors inspect existing tile roofs and can make updates and repairs as needed. Proper care and maintenance help to ensure the long lifespan of these attractive roofing systems.
One of the most important factors for installing tiled roofs is the slope of the roof's sides. Modern building codes stipulate that clay or concrete tiles can be installed on a roof that is sloped at least 2 to 12. Shallowly pitched roofs, which are those less than 4 to 12, will need a double layer of underlay.
The underlay is also critical for the performance of tile roofing. If an asphalt felt is used as the underlay, it should be at least 30-pound felt or mineral-coated rolled roofing. On roofs with a shallow slope, there must be an overlap of at least 19 inches between separate pieces of underlay. This is because shallowly sloped roofs tend to have poor drainage compared to more steeply pitched rooftops.
Flashing is also important to tiled roofs. Head and side walls must be outfitted with both flashing and counter flashing to prevent moisture intrusion.
A roofer from ACI Exteriors of O'Fallon would be happy to answer any questions you have about TPO roofing systems or gutters.
Galvanized steel, aluminum and copper are all ideal flashing materials for use on a concrete or clay-tiled roof. Any rooftop protrusions, such as chimneys, plumbing vents and furnace flues, should also have flashing installed. On older homes, flashing could be made from lead. Over time, this can deteriorate and leak lead into the soil around the home's perimeter. When the roof is replaced, non-leaded flashing should be installed as a replacement material.
Tiles are more difficult to fasten onto a roof's sheathing due to their thickness and curvature. In moderate climates, each tile must be attached with at least one fastener on a steeply sloped roof. In places that get snow and ice during the wintertime, two or more fasteners should be used per tile. The nail or screw that fastens the tile should extend all the way into the plywood in order to provide the best level of resistance to high winds. All fasteners should be made of corrosion-resistant materials such as stainless steel or copper. A batten should be installed around the entire edge perimeter at the bottom of the roof to prevent tiles from sliding off if loosened.