Roof Tile Defects

Poor designs found in pitched roofs inadequately sized members.

Roof tile defects.

When compared to other roofing materials like asphalt clay composite and metal concrete roof tiles are significantly heavier. Common roof defects concrete tile roofs. These cracked tiles are then at a greater risk of falling off the roof which will leave the felt underneath exposed to the elements. Some roof leaks are tough to locate.

Poor design damp penetration and failure of the roof covering which we sometimes see in out house surveys in london. The common failures on clay tile roofs include cracked broken tiles spalling in freezing climates loose tiles that slide down out of place on roofs where not every tile is secured to the roof deck flashing failures corrosion or cracking and fastener failures. Sometimes the water shows up at a ceiling spot distant from the leak. Roof tiles not slate repaired using copper strips the strip ends holding tiles have been bent back by sliding snow expect movement leaks and extensive nail failures.

Cracked tiles can also occur after water or snow on the roof freezes and expands. In this photo not only are tiles cracked broken and displaced but mortar has crumbled and collected in the pan tiles that form water channels. Individual slates or tiles can suffer breaking or cracking. This demonstrates the advantages of slate hooks in lieu of copper strips when replacing lost slates.

We ve put together a few of the most common roof defects problems we find with roofs on surveys so you have a better idea of what you should be looking out for. There are a number of reasons why a roof may be defective. Slipped broken slates or tiles. Eventually this will cause the bond between clay and mortar to fail and tiles will become displaced another sign of old tile.

Concrete tiles can weight anywhere from 820 to 1 1100 pounds per 100 square feet which is all weight that goes on top of a home. This defect also occurs on slate roofs repaired using this method. Defects in pitched roofs normally caused by 3 main factors. One of the first problems that come with concrete roof tiles is their sheer weight.

If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic often water runs to openings in the vapor barrier such as at ceiling light fixtures. This type of tile is called pan and cover. Most manufacturers offer a 50 year warranty for their products. Moss attracts birds which feed off it and can damage the tiles in the process.

Common roof defects concrete tile concrete tile is seen in many of the same shapes as clay tile and are normally found in flat or curved categories. Roofs can also become defective due to other defective elements of a building such as a failing load bearing wall.