Shingle Roof Roofing Layers Diagram

For example there s a starter course of roofing shingles installed at the eaves before the roofing shingles you can see.

Shingle roof roofing layers diagram.

When to consider re roofing. Now you can get nearly any style of roof shingle manufactured from metal. Roofing underlayment is a layer of material usually synthetic or felt that adds extra protection on top of the roof deck and under the shingles. Once fixed the underlayment will help repel the moisture.

You can usually see the underside of plywood decking from the attic. Roof slope is between 2 12 and 4 12. Roof slopes greater than 4 12 require only one layer of underlayment. It used to be that the only type of roof metal available was the flat panel or corrugated standing seam roof.

Doing it properly will keep you without problems for 20 or 40 years. If so you ll likely save quite a bit of money by leaving your existing roofing system in place beneath a new layer of shingles. Laying shingles can be hard and hot work but the reward of an attractive watertight roof can be worth it. Look at this wood shake example from classic metal roofing systems.

Ice water barrier this self adhering water proof and self sealing membrane is applied to the roof deck. Measure the length of a shingle as it lies across the roof. Underlayment is the second layer of protection for the roof. Most often made out of plywood this roof layer is installed over the framing in a typical roof install.

Roofing layers from the framing to the shingles. If your roof s width is not an even multiple of the shingle s length you will have a partial piece on one end of each row. Ultimately it s best to work with a roofing professional to determine if your roof is eligible for re roofing. This will help determine how the shingles will lay on the roof width.

Keeping a solid roofing layer of shingles is an important way to avoid water damage and leaks. Underlayment in high wind areas i e where wind speeds are 110 mph or greater must be secured with. A valley is defined as the area where two roof fields join to make an inward angle. Metal roofing has come a long way.

When complying with the irc most roofing systems will require two layers of underlayment when the. Synthetic underlayment helps repel moisture and provides. Roof covering typically of flat and rectangular shapes and made of various materials such as slate wood flagstone plastic metal and composite materials. It provides structure by tying the trusses and joists together.

Roof maintenance is a major part of any homeowner s responsibility. It is a waterproofing layer made of regular felt stacked above the solid decking board and then completely covered by the shingles or other roofing materials. Most asphalt shingles are 3 feet 91 4 centimeters in length.