Shingle Roof Roofing Layers Diagram

Most asphalt shingles are 3 feet 91 4 centimeters in length.

Shingle roof roofing layers diagram.

When to consider re roofing. Ultimately it s best to work with a roofing professional to determine if your roof is eligible for re roofing. Roofing layers from the framing to the shingles. Roof slopes greater than 4 12 require only one layer of underlayment.

When complying with the irc most roofing systems will require two layers of underlayment when the. Underlayment is the second layer of protection for the roof. This will help determine how the shingles will lay on the roof width. Laying shingles can be hard and hot work but the reward of an attractive watertight roof can be worth it.

It provides structure by tying the trusses and joists together. Keeping a solid roofing layer of shingles is an important way to avoid water damage and leaks. 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.

So we ll start at the bottom of the deck and work our way up through all the roofing layers until we reach the shingles and sunshine above your roof. 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. It used to be that the only type of roof metal available was the flat panel or corrugated standing seam roof. Roof slope is between 2 12 and 4 12.

Roof covering typically of flat and rectangular shapes and made of various materials such as slate wood flagstone plastic metal and composite materials. Synthetic underlayment helps repel moisture and provides. Metal roofing has come a long way. A valley is defined as the area where two roof fields join to make an inward angle.

Look at this wood shake example from classic metal roofing systems. Doing it properly will keep you without problems for 20 or 40 years. 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. 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.

The roof deck is the structural foundation base for the roof system and is usually made of wood or plywood. Underlayment in high wind areas i e where wind speeds are 110 mph or greater must be secured with. Now you can get nearly any style of roof shingle manufactured from metal. You can usually see the underside of plywood decking from the attic.

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