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MSDSonline - Manage Material Safety Data Sheets with is great image for your collection and this design is free to use with high definitions resolution. Copyright © 2014 Tattoo Design Bild, All trademarks are the property of the respective trademark owners. I use redundant layers of flashing integrated into the housewrap to keep water from getting behind exterior cladding; a kickout flashing directs water into the gutter. Watch the video:Direct Water Into Gutters with a Kickout Flashing DiverterMike Guertin teaches you his proactive approach to flashing one of a roof's most vulnerable intersections.
On a retrofit you may not be able to get the large lapping pieces of housewrap onto the wall but you can layer in a couple pieces even if you only pull 3 or 4 siding laps off. Perhaps this description will help - Remove the siding at the end of the eave edge from the bottom of the facia and up to 3 courses above the drip edge line. There are many opinions about the benefits of and problems with roof venting, but it all comes down to proven rules of building science. Pizza's sister lives in a house in Bucks County, Pennsylvania, that was built in the mid-1980s.
Now the house needs a new roof, and the contractor is recommending that Pizza's sister install a ridge vent. DanH is among those who think the best strategy is to block the gable vents and go along with the contractor's suggestion to install the ridge vent. Despite Pizza's assurances that his sister's house has vented soffits, xxPaulCPxx contends they may not be large enough, or numerous enough.
In snow country, ridge vents may be blocked by drifting snow during the winter and therefore unable to work correctly.
DanH says ridge vents remain effective in winter because winds generally clear the ridge within a few days of even a heavy snow, and because warm air working its way up through the attic will melt snow covering the vent. DickRussell admits that under certain conditions, a layer of ice-encrusted snow can cover and block ridge vents. Kankan writes that his well insulated roof has no problem with ice dams, as long as the ridge vent is visible. I've had major ice dam problems the past two winters due to the ridge vents being completely block by 1-3' of snow for weeks at a time. If the idea is to get the attic to the same temperature as the outdoors, to avoid ice dams or heat transfer [into the house], the ideal system is no roof at all. I presume, perhaps erroneously, you aren't going to create air merely based on the configuration of your vents.
To qualify that, if heat does tend to rise, you would want to plan to take advantage of that fact.
Be sure the Spokane roofing contractors you choose have the legal right to service your home or business according to local and state regulations.
Check out the reputation of the Spokane roofers you choose by visiting the Better Business Bureau. Roof covering: shingles, tile, slate or metal and underlayment that protect the sheathing from weather.
Sheathing: boards or sheet material that are fastened to roof rafters to cover a house or building. Fiberglass shingles consist of a fiberglass mat, top-and-bottom layers of asphalt, and mineral granules. Asphalt shingles’ fire resistances, like most other roofing materials, are categorized by Class A, B or C. Regardless of their reinforcing type and appearance, asphalt shingles’ physical characteristics vary significantly.
Wood shingles and shakes are made from cedar, redwood, southern pine and other woods; their natural look is popular in California, the Northwest and parts of the Midwest. Metal, primarily thought of as a low-slope roofing material, has been found to be a roofing alternative for home and building owners with steep-slope roofs.
Synthetic roofing products simulate various traditional roof coverings, such as slate and wood shingles and shakes. Before making a buying decision, NRCA recommends that you look at full-size samples of a proposed product, as well as manufacturers’ brochures. Therefore, it is important never to block off sources of roof ventilation, such as louvers, ridge vents or soffit vents, even in winter. In addition to the free flow of air, insulation plays a key role in proper attic ventilation.
A gap-free layer of insulation on the attic floor to protect the house below from heat gain or loss. A vapor retarder under the insulation and next to the ceiling to stop moisture from rising into the attic.
The requirements for proper attic ventilation may vary greatly, depending on the part of the United States in which a home or building is located, as well as the structure’s conditions, such as exposure to the sun, shade and atmospheric humidity.
Rain: When water gets underneath shingles, shakes or other roofing materials, it can work its way to the roof deck and cause the roof structure to rot.
Condensation: Condensation can result from the buildup of relatively warm, moisture-laden air.
Trees and leaves: Tree branches touching a roof will scratch and gouge roofing materials when the branches are blown by the wind. Shingle deterioration: When shingles are old and worn out, they curl, split and lose their waterproofing effectiveness. Drip edge: An L-shaped strip (usually metal) installed along roof edges to allow water run off to drip clear of the deck, eaves and siding. Flashing: Pieces of metal used to prevent the seepage of water around any intersection or projection in a roof system, such as vent pipes, chimneys, valleys and joints at vertical walls. Louvers: Slatted devices installed in a gable or soffit (the underside of eaves) to ventilate the space below a roof deck and equalize air temperature and moisture.
Oriented strand board (OSB): Roof deck panels (4 by 8 feet) made of narrow bits of wood, installed lengthwise and crosswise in layers, and held together with resin glue.


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If the footing does not extend below the frost line, the footing will heave as the ground freezes and thaws. Even if you're setting the deck posts in the ground, instead of on top of footings, the concrete still needs to extend below the frost line. If your deck posts move up in the spring then settle back down as the weather warms, then you have a bad case of “frost heave-osis.” In the winter, the ground freezes from the top of the soil downward.
When you contact your local building department to get your building permit, ask what the frost depth requirement is and the required size and shape of the footings. When water freezes, it expands about 9 percent—think of how ice cubes are domed above the original water level in the ice cube tray. The reason buildings and decks don't always return to their original height is that surrounding dirt sometimes fills in under the footing while it's lifted. Heavy clay soils don't drain well, so they tend to have more frost heave problems than sandy, well-drained ones. Flare the sides on concrete footings so the footings will resist heave in harsh winters when frost penetrates especially deep. Mound soil around the posts after the backfill settles to direct runoff water away from the post.
If you're pouring more than a few footings, order premixed concrete from a ready-mix company. Figure concrete volume by multiplying the height of the post and column in feet by the radius of the tube in feet squared times 3.14.
Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.
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A common problem area is the point where the gutter on a single-story roof eave dies into a two-story wall. The process might seem overcomplicated at first, but the minor expense in time is much better than having to tackle rot repairs down the road. After lapping the first piece of roof underlayment up onto the wall by about a foot, I install a kickout diverter flashing that redirects water into the gutter so that it won't channel behind the siding. The problem is it leaks and the original roofing company that did the work came out and extended some type of black flashing up and around the window but it still leaks.
Read the discussion below to see what builders and homeowners are typically dealing with, but then read A Crash Course in Roof Venting to find some proven roof-venting solutions.
Like many others of the era, the house has a gable vent at each end of the attic, along with soffit vents at the eaves.
I had to completely replace the ceiling in my master bedroom last fall, only to see it get ruined again just a few months later in last winter's heavy snowfall and long periods of frigid temperatures. No amount of attic insulation will prevent ice dams from forming when there is zero ventilation. Electrical exhaust vents in combination with soffit vents and ridge vents will work in all climates and all weather conditions. Be sure to select a roofing company that will be able to service your needs in the winter off season, when damages to your roof are the most likely to occur. Of course, cost and durability head the list, but aesthetics and architectural style are important, too. Organic and fiberglass products are available in laminated (architectural) grades that offer a textured appearance.
When installing asphalt shingles, NRCA recommends use of shingles that comply with American Society for Testing and Materials (ASTM) standards-ASTM D 225 for organic shingles and ASTM D 3462 for fiberglass shingles. Mission and Spanish-style round-topped tiles are used widely in the Southwest and Florida, and flat styles also are available to create French and English looks. Without it, heat and moisture build up in an attic area and combine to cause rafters and sheathing to rot, shingles to buckle, and insulation to lose its effectiveness. Proper attic ventilation will help prevent structural damage caused by moisture, increase roofing material life, reduce energy consumption and enhance the comfort level of the rooms below the attic. Nevertheless, the general ventilation formula is based on the length and width of the attic. Extra moisture encourages mildew and rot elsewhere in a house, including walls, ceilings, insulation and electrical systems. Moisture in a poorly ventilated attic promotes decay of wood sheathing and rafters, possibly destroying a roof structure.
Once it grows, moss holds even more moisture to a roof system’s surface, causing rot. Falling branches from overhanging trees can damage, or even puncture, shingles and other roofing materials. When shingles are missing or torn off, a roof structure and home or building interior are vulnerable to water damage and rot. Roofing materials are rated Class A, B or C, with Class A materials having the highest resistance to fire originating outside the structure. That way, they won't move, or heave, as the ground freezes and thaws during seasonal changes. The depth of frost penetration depends on the soil type, the severity of the winter, the amount of water in the soil and the depth of an insulating blanket of snow.
In frigid Minnesota, the frost depth is 42 in., whereas a warmer state like Missouri may have a frost depth of only 1 ft.
Then dig the footing holes so that the bottoms of the footings are at or below the frost depth.
But even if footings are deep enough, ice lenses can latch onto the rough surfaces of wood and concrete and lift footings and posts from the side.


You'd be shocked at how many bags of concrete mix you'd have to mix by hand to fill a form tube. Here you can find some new design about MSDSonline - Manage Material Safety Data Sheets with for your current screen resolution. Roofers or siding contractors often install step flashing that allows roof water to slip behind the gutter and get behind the siding and even the housewrap. If I can't get some sort of weather barrier against the wall at the end of the eave, I apply a piece of housewrap that runs vertically from just below the soffit to at least 3 ft. Once the flexible flashing is set, I apply a piece of housewrap along the wall where the fascia hits. Although flexible flashing tape is pretty durable, it's best to protect it with metal flashing and to treat it as a backup for water leaks. I build in 110-mph to 120-mph hurricane zones, so if I install a membrane beneath the step flashing and underlayment, it's cheap insurance against a catastrophic event. Finally, the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings. The soffit vents are kept open from being blocked by insulation with rigid foam baffles between rafters inside the attic. Fortunately, I learned from the previous experience, and immediately cut drain holes in the ceiling this time to prevent tens of gallons of water from pooling and pulling the blue board off the strapping. I was wondering if it is normal for a mist to come through when we have driving, lateral rain.
The right roof system for your home or building is one that balances these five considerations. Although asphalt shingles reinforced with organic felts have been around much longer, fiberglass-reinforced products now dominate the market.
Generally, most fiberglass shingles have Class A fire ratings, and most organic shingles have Class C ratings.
Zinc or copper-coated ceramic granules also can be applied to organic or fiberglass products to protect against algae attack, a common problem in warm, humid parts of the United States.
These standards govern the composition and physical properties of asphalt shingles; not all asphalt shingles on the market comply with these standards. A point to consider: Some local building codes limit the use of wood shingles and shakes because of concerns about fire resistance. Considered virtually indestructible, it is, however, more expensive than other roofing materials. Water backs up under the shingles (or other roofing materials) and seeps into the interior.
Sufficient attic ventilation can be achieved by installing larger or additional vents and will help alleviate problems because the attic air temperature will be closer to the outside air temperature.
Leaves on a roof system’s surface retain moisture and cause rot, and leaves in the gutters block drainage. That's why concrete piers poured in waxed cardboard tubes and smooth wooden posts work well for below-grade support. Do this by nailing the sides of the tube to the center of a tic-tac-toe grid of 2x4s at the top of the hole. You can download this as nice desktop wallpaper by right click and save as into your computer.
This piece isn't absolutely necessary, but later, it becomes easier to cover the wall completely with a final sheet of housewrap. I cut the wrap at the turnout in the diverter and seal the top of the cut with housewrap tape.
If a shingle product complies with one of these standards, it is typically noted in the manufacturer’s product literature and on the package wrapper. Metal shingles typically are intended to simulate traditional roof coverings, such as wood shakes, shingles and tile.
During the early melt stages, gutters and downspouts can be the first to fill with ice and be damaged beyond repair or even torn off a house or building. A deteriorated roof system only gets worse with time-it should be replaced as soon as possible. Don't miss to check all from this kind of lovely popular desktop background by viewing the similar high definition wallpapers design below. The exterior roof has ice blankets under the exterior shingles extending up the roof well beyond the soffit area. However, Class A fire ratings are available for certain wood shingle products that incorporate a factory-applied, fire-resistant treatment. If you are replacing another type of roof system with tile, you will need to verify that the structure can support the load. Many old homes, especially in the Northeast, still are protected by this long-lasting roofing material. Apart from metal roofing’s longevity, metal shingles are relatively lightweight, have a greater resistance to adverse weather and can be aesthetically pleasing. Besides creating a black-green stain, algae can retain moisture, causing rot and deterioration. Remember that there's a layer of housewrap underneath that will keep the water from getting to the sheathing. Trees and bushes should be trimmed away from homes and buildings to eliminate damp, shaded areas, and gutters should be kept clean to ensure good drainage. When I can't place the sheet ahead of time, I sometimes can sneak a piece of housewrap back there after prying the truss or rafter back just 1?16 in.
I then add a second piece of flexible flashing tape to cover the open corner of the metal flashing, and I fold it down onto the subfascia.



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install new shed roof



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