Shingle Roof Roofing Layers Diagram

It provides structure by tying the trusses and joists together.

Shingle roof roofing layers diagram. Roof slope is between 2 12 and 4 12. Metal roofing has come a long way. Keeping a solid roofing layer of shingles is an important way to avoid water damage and leaks. 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.

Underlayment in high wind areas i e where wind speeds are 110 mph or greater must be secured with. When to consider re roofing. Synthetic underlayment helps repel moisture and provides. Doing it properly will keep you without problems for 20 or 40 years.

The roof deck is the structural foundation base for the roof system and is usually made of wood or plywood. It is applied directly to the roof sheathing to protect the roof from the elements while shingles are fixed to the roof. 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. This will help determine how the shingles will lay on the roof width.

It used to be that the only type of roof metal available was the flat panel or corrugated standing seam roof. A valley is defined as the area where two roof fields join to make an inward angle. Now you can get nearly any style of roof shingle manufactured from metal. Most asphalt shingles are 3 feet 91 4 centimeters in length.

Once fixed the underlayment will help repel the moisture. Measure the length of a shingle as it lies across the roof. Roof maintenance is a major part of any homeowner s responsibility. When complying with the irc most roofing systems will require two layers of underlayment when the.

Ice water barrier this self adhering water proof and self sealing membrane is applied to the roof deck. 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. 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. Roof covering typically of flat and rectangular shapes and made of various materials such as slate wood flagstone plastic metal and composite materials.

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. For example there s a starter course of roofing shingles installed at the eaves before the roofing shingles you can see. Ultimately it s best to work with a roofing professional to determine if your roof is eligible for re roofing. You can usually see the underside of plywood decking from the attic.

Look at this wood shake example from classic metal roofing systems. Roof slopes greater than 4 12 require only one layer of underlayment. Laying shingles can be hard and hot work but the reward of an attractive watertight roof can be worth it.