Roof Tile Defects

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.

Roof tile defects. Most manufacturers offer a 50 year warranty for their products. Typically before 1890 nineteenth century roofs often contained narrow rafters. This demonstrates the advantages of slate hooks in lieu of copper strips when replacing lost slates. 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.

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. 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. Slipped broken slates or tiles.

Defects in pitched roofs normally caused by 3 main factors. Common roof defects concrete tile roofs. One of the first problems that come with concrete roof tiles is their sheer weight. 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.

Sometimes the water shows up at a ceiling spot distant from the leak. Cracked tiles can also occur after water or snow on the roof freezes and expands. Concrete tiles are often brittle so we recommend only authorized personnel be allowed to walk on your. Poor designs found in pitched roofs inadequately sized members.

This defect also occurs on slate roofs repaired using this method. Individual slates or tiles can suffer breaking or cracking. Poor design damp penetration and failure of the roof covering which we sometimes see in out house surveys in london. Some roof leaks are tough to locate.

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. Moss attracts birds which feed off it and can damage the tiles in the process. Roofs can also become defective due to other defective elements of a building such as a failing load bearing wall. These cracked tiles are then at a greater risk of falling off the roof which will leave the felt underneath exposed to the elements.

When compared to other roofing materials like asphalt clay composite and metal concrete roof tiles are significantly heavier. It can occur from the early stages such as poor design and construction to poor maintenance.