Shingle Roof Roofing Layers Diagram

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.

Shingle roof roofing layers diagram.

Roof slopes greater than 4 12 require only one layer of underlayment. Doing it properly will keep you without problems for 20 or 40 years. Underlayment is the second layer of protection for the roof. You can usually see the underside of plywood decking from the attic.

Now you can get nearly any style of roof shingle manufactured from metal. It provides structure by tying the trusses and joists together. Roof covering typically of flat and rectangular shapes and made of various materials such as slate wood flagstone plastic metal and composite materials. Ice water barrier this self adhering water proof and self sealing membrane is applied to the roof deck.

A valley is defined as the area where two roof fields join to make an inward angle. Synthetic underlayment helps repel moisture and provides. For example there s a starter course of roofing shingles installed at the eaves before the roofing shingles you can see. Roof maintenance is a major part of any homeowner s responsibility.

The roof deck is the structural foundation base for the roof system and is usually made of wood or plywood. Measure the length of a shingle as it lies across the roof. It is applied directly to the roof sheathing to protect the roof from the elements while shingles are fixed to the roof. When complying with the irc most roofing systems will require two layers of underlayment when the.

Metal roofing has come a long way. 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. Ultimately it s best to work with a roofing professional to determine if your roof is eligible for re roofing.

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. Laying shingles can be hard and hot work but the reward of an attractive watertight roof can be worth it. Most often made out of plywood this roof layer is installed over the framing in a typical roof install. Underlayment in high wind areas i e where wind speeds are 110 mph or greater must be secured with.

Look at this wood shake example from classic metal roofing systems. Most asphalt shingles are 3 feet 91 4 centimeters in length. Roofing layers from the framing to the shingles. Roof slope is between 2 12 and 4 12.

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. This will help determine how the shingles will lay on the roof width. Once fixed the underlayment will help repel the moisture.