Davis Roofing: Article About Preventing Roof Leaks
Water is a major factor in most cases of structural damage to residential and commercial buildings. The property owner may not even realize that the roof is leaking until significant harm has been done to the framing, walls and ceiling. In order to prevent moisture from getting into attic spaces, every layer of the roofing system must be adequately sealed. Davis roofing specialists can thoroughly inspect the sheathing, underlayment and roof covering along with all the ridges, valleys, eaves and areas of penetration. If openings exist, they can be quickly and easily repaired.
A roof's sheathing needs to be waterproof so that the interior will stay dry if the covering and underlayment get punctured or blown off. Since the decking sheets are laid with a small gap between them to allow for expanding and contracting, they must be taped. Rather than depending on duct tape to stop the potential flow of water, the builder should secure the openings with 4 inch bitumen tape. This "peel and seal" product adheres well to many substrates and is usually covered with an aluminum film for water resistance. The tape can stretch and shrink without losing its functionality. In comparison to metal flashing, bitumen tape often proves to be more effective.
Although the main purpose of underlayment is to guard against water leaks, it is not foolproof. The material, whether felt or synthetic, is water resistant but not normally airtight.
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Areas around nails and fasteners can be prone to leakage unless sealant is applied. Some of the new synthetic underlayments on the market are self adhesive and will hopefully increase the level of protection against moisture. With periodic maintenance, this roof layer can be kept in good condition for optimal performance.
Regardless of the roof covering type, heavy rain can make its way past the barriers and wreak havoc on the materials below. Metal panels and roll roofing products leave fewer joints and edges for water to seep through than smaller components such as shingles and tile. However, they are frequently installed on flat roofs and accumulate ponding water. A sloped roof encourages precipitation to flow to the ground freely. At ridges and valleys, a waterproof membrane is a must in order to keep the water from dripping down to the underlayment. Areas of penetration, like around chimneys, require flashing. A drip edge at the eaves is often able to hold up against driving rain. Most roof coverings can benefit from the routine application of a solid, waterproof coating. In addition to keeping rainwater on the building's exterior, an elastomeric coating can stop metal from rusting and prevent UV damage.
In every region with an annual wet season, the residents understand the importance of maintaining a waterproof roofing system. From the sheathing materials that lay directly over the rafters to the covering that offers aesthetic appeal, extensive damage can occur if the property owner does not take precautionary measures against water leaks.