Roof replacement is not something to take lightly, nor is it a repair that should be delayed. When you sense that your roof is nearing the end of its useful life sentence, brush up on these basics before soliciting bids from roofing contractors .
Reading: The Basics of Roofing Replacement
The Basic Roofing Materials
Your choice of roofing materials much depends on your vicinity, ampere much as on your own personal taste. In some regions, for exemplar, metal roofing is a common survival due to its fire electric resistance, while in other regions, the overriding home styles might call for a Spanish-influenced tile instrument. Roof deliver ( slant ) besides affects the kind of roofing materials you can use. For exemplar, woodwind shake shingles can be used for steeper pitched roof but are not desirable for flatter, low-pitched roof .
The most common choices for residential roof include :
- Asphalt composition shingles: These are cheap and easily obtainable, but they are less attractive than other options due to their flat appearance. This is by far the most popular type of roofing material.
- Wood shakes or shingles: These are pricey but attractive shingles. They have great durability but aren’t a good choice in regions where there is a fire danger.
- Metal Roofing: Metal roofs made of steel or aluminum have become more popular in recent years, due in part to their durability and because they are fireproof. These are expensive roofs that require specialty contractors for installation, but they may be cost-effective over the long run due to their long life. Several types of metal roofing systems are available, including raised-seam panels and products that mimic the look of composite shingles.
- Slate roofing: This is a highly attractive, high-end roofing option, but it is expensive and very heavy. Slate roofs are extremely slippery to walk on and difficult to repair when damaged.
- Composition slate: These synthetic tiles made from 95 percent recycled materials, including rubber, are gaining in popularity. They closely resemble slate and other forms of stone tile but are much lighter and less susceptible to damage.
- Clay or ceramic tile: Long the most predominant image in Southern California and Florida, the so-called Spanish-style red tile roof is still common but is being gradually replaced by metal and composite materials that mimic the Spanish tile look. Other roofing materials are now available which meet ceramic tile’s fire retardant ability, with much less weight put on the roof. This type of shingle is called the half-barrel because it is essentially a cylinder cut in half length-wise, roughly 16 inches long.
Tear off or Second Layer ?
It was once common to lay a new shingle roof over the preexisting layer at least once, or sometimes even doubly. This is no long allowed in some jurisdictions, where complete tear-off of the previous roof is immediately required. even where layer is allowed, applying a new layer of shingles over the old should be cautiously considered on the basis of its pros and cons :
- Weight: The main argument against laying additional layers of asphalt shingles is that the roofing materials can get too heavy for the underlying roof framing. This can be a structural problem, especially for older houses. It is often said that a triple layer of asphalt shingles is equal to a single layer of slate shingles—an exceedingly heavy type of material.
- Telegraphing: Another problem with shingling over existing shingles is that you are essentially repeating some of the surface irregularities that may already be present. If you’re contemplating putting on a new roof, there’s probably a good chance that you may have bubbles, bumps, and waves that should be remedied. Putting new shingles over existing problems can leave you with a rather unattractive new roof. One way to minimize this problem is to go over the old roof and correct as many problems as you can before re-roofing. It doesn’t take much more than a hammer, some roofing nails, and a handful of shingles to correct bumps, gaps, and protruding nails.
- Work and waste reduction: The primary advantage of layering is that it reduces the work involved. Stripping off the existing layer and then laying down a new layer adds more work to the process. This isn’t a real problem if roofing professionals are tackling the job—they can strip most roofs in a morning—but if you’re doing the job yourself, it can be a strong argument for roofing right over the old roof.
- Manufacturer’s warranties: Some types of roofs and manufacturers require that roofs under warranty be completely stripped in order to comply with the rules and restrictions of the warranty. If the roof is currently under warranty, check what the warranty requires.
respective factors go into the monetary value of a ceiling, beginning with your choice of roofing materials ( ranging from brassy three-tab asphalt shingles up to architectural shingles or even slate ). The roofing contractile organ you choose, the pitch ( abruptness or your ceiling ), and the feather footage of your roof are other factors that affect the cost. Rock-bottom, a three-tab composite roof for a small dwelling may cost adenine short as $ 7,000. nationally, a typical roof using architectural asphalt shingles costs between $ 3.50 and $ 5.50 per square foot—a price that includes all destruction, license fees, consume disposal, and killing.
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typical average costs of different roofing options :
- Three-tab asphalt shingles: $7,000 to $12,000
- 30-year shingles: $9,000 to $15,000
- 50-year shingles: $11,000 to $20,000
- EPDM rubber: $8,000 to $14,000
- TPO or PVC membrane: $10,000 to $15,000
- Wood shingles: $14,000 to $25,000
- Steel shingles: $14,000 to $25,000
- Aluminum shingles: $15,000 to $28,000
- Standing-seam steel roofing: $23,000 to $30,000
- Natural slate: $25,000 to $50,000
- Concrete tile: $20,000 to $40,000
- Clay tiles: $25,000 to $50,000
Consider off-season Roofing work
A well-coordinated roofing team is an perplex thing to watch—and this is why we pay them to do our roof. While in most parts of the U.S. the optimum roofing temper is from belated give to early fall, skilled crews are able to extend the work temper, sometimes even roofing when bamboozle flurries are threatening. There is no reason, in other words, not to hire a skilled crew to roof your home during off-season periods. You may flush enjoy lower prices at these times since the labor demand is abject. The magic trick behind getting your ceiling job shoehorned into the offseason is having a bombastic team of professional roofers who can knock out the cultivate in hours, rather of days, thus taking advantage of dry periods .
Understand the Roofing process
You ‘ll be able to make propose decisions when hiring a roof crew if you understand the process, a well as the slang used in the roofing trade .
A moderately-sized, professionally-installed roofing job might take entirely 3 or 4 days. The overall process followed by the roofing gang goes like this :
- Remove all existing shingles, deposit them in a roll-off dumpster: Damaged or old valley flashing and drip edging is also removed at this time. A good crew will use tarps to protect foundation plantings and shrubs during tear-off and will use magnetic tools to pick up nails and metal objects from the lawn.
- Make minor repairs on the roof if it is in good condition: If not, replace bad wood with new plywood sheathing or 1 x 6 sheathing boards, whichever is applicable to your type of roof.
- Install ice dam protection in regions that require it: The ice guard membrane is a synthetic waterproof barrier material designed to prevent melting ice from backing up under the shingles and penetrating through the sheathing, where the moisture can cause severe damage.
- Lay down asphalt roofing paper over the roof sheathing: The layer of roofing paper creates an inner barrier against water penetrating into the house. Rows of roofing paper are overlapped as they progress upward toward the peak, and are normally tacked or stapled in place.
- Apply metal drip edging around the edge of the roof, both the eave sides and gable sides: The metal drip edge is nailed in place over the roofing paper or ice guard.
- Where necessary, apply a new valley flashing along with areas where two roof planes meet: The valley flashing is typically nailed to the roofing deck and sealed with roofing caulk.
- Apply the tab shingles, starting at the eaves and working upward toward the peak: Where roof vents are being installed, these are installed as the progress of the shingles toward the peak.
- Apply the flashing around all areas where leaks might come into the house—against the chimney, around skylights and stack vents, etc.: Flashing installation may happen as part of the roofing installation, occurring as the rows of shingles progress upward on the roof deck.
- Install the ridge vent: This continuous vent along the peak of the roof will help the air circulation in the attic space and can be integral in exhausting hot air and preventing winter ice dams. Ridge vents may not be included on older roofs, but installing them is a good idea whenever a house is re-roofed. If ridge vents are not practical, the should be other types of roof or gable vents installed to provide air circulation in the attic space.
- Complete the final cleanup and haul the debris away: Have the installation inspected and approved by a building inspector.
The roofing commercial enterprise uses some particular terminology when estimating materials for a roofing problem .
- The term square, when used in the roofing business, is a unit of area. One square equals 100 square feet.
- Shingles come in bundles. Three or four bundles of shingles typically will cover a square of roofing area.