The largest area of the building that is exposed to the weather is the roof. How does a person know when a roof's time has come? The article will examine several factors that can be used to help determine where the roof is on the aging curve and thus, look...
An ice dam is an accumulation of ice at the lower edge of a sloped roof, usually at the gutter. When interior heat melts the snow on the roof, the water will run down and refreeze at the roof's edge, where temperatures are much cooler. Eventually, the ice builds up...
Long-term coatings performance starts with attention to application and maintenance issues during specification. In sustaining facility roofs, cold-applied coatings are fundamental maintenance tools. Before implementing a successful coatings program, however, it is important that maintenance and engineering managers have a sound understanding of coating appropriateness, available coating materials and installation...
Worker safety is important on any construction job site. Pitched roofs are no exception. There are several factors that contribute to avoidable accidents while installing structural wood panel roofs. This paper describes and provides information about those factors and simple precautions that can improve the safety of working conditions on...
Of all the residential roofs in the United States, 95 percent are sheathed with wood structural panels. This is because the panels are easy to install and form an excellent substrate for finished roofing such as organic and fiberglass/asphalt shingles. Proper installation is important, however, if you want to ensure...
Many building owners and facility executives have experienced unscheduled capital expenditures due to roofing repairs. Many of these water-infiltration-related repairs can be avoided by developing and following a scheduled maintenance program for the life of a roofing system. Even with stringent adherence to a thorough maintenance program, however, the decision...
No one wants to invest millions of dollars in a roofing project until it’s absolutely necessary. Some building owners will be happy with the results for years to come. Others will be disappointed and disillusioned, and will waste valuable time trying to figure out what went wrong. Experts agree that...
Locating where a hip or valley bears on an exterior wall is pretty straightforward on roofs with equal pitches - it's always located right over the outside corner, coming off at a 45-degree angle when viewed in plan. But on hips and valleys between roofs with unequal pitches, this can...
In hurricane country and other high wind areas, it is critical that the homeowner understands the impact high wind forces can have on a roof system, and the preventative fastening techniques essential to maintaining a safe and long-lasting roof system. This technical note illustrates the effects of high winds on...
A purlin is a secondary roof framing member that supports other smaller members. In a panelized roof system, purlins are supported by main carrying members. The purlins, in turn, support stiffeners (sometimes called sub-purlins) which provide support framing for the structural panel deck. Panelized roof purlins are typically spaced at...
This paper provides recommended nailing schedules for wood structural panel roof sheathing - plywood, COM-PLY and oriented strand board OSB. These schedules were established to provide resistance to wind uplift pressure, with particular emphasis on high wind exposures. The ability of a roof sheathing panel to resist high winds is...
Howard R. Green Company HRG was retained by the Hutchinson Public School District to provide construction documents and observation for the replacement of their 180,000-square foot high school roof. Since the roofing project had to be completed while school was not in session, the timeline was very tight considering the...
David Baasch is setting the solar standard for his southwest Portland neighborhood. In May 2003, he "powered up" a 3 kilowatt solar electric photovoltaic array on his roof and began generating power courtesy of the sunMr. Sun Solar worked with Baasch to design a solar system that would perform well...
*No, we do not expect Mr Obama magically to be hoisted to the sky to run around the roof of Invesco Field after his acceptance speech tonight. And though there will be lots of fireworks, we doubt that the Democrats will outdo the opening and closing ceremonies in Beijing. But...
Con Edison's (NYSE: ED) first "green roof," anew energy-saving plant system, is growing on the company's three-storyLearning Center training and conference facility in Long Island City. ConEdison expects the green roof to improve air quality and to conserve energyby reducing the amount of heat absorbed by conventional roofs. More than...
CLOVIS, N.M. AP -- Four jail inmates who authorities say helped eight others make a brazen escape were charged Wednesday, as officials kept up the search for the five prisoners who remain on the loose, including a convicted murderer. Two people close to the fugitives were also...
According to a recent piece in the Wall StreetJournal, slips are passé. However, comments from WSJ readers indicate theslip is making a comeback and, as many top designers are featuring thissensual women's lingerie in their new lines, WSJ readers might be right.HerRoom.com offers slips in several styles and...
Mexico without tequila? It seems a far-fetched notion but the country's farmers are shunning the famous agave plant because of poor prices and switching to profitable crops. By Guy Adams The ethanol boom SAVOUR THAT frozen margarita in your hand, for soon you might not...
The truth about a "windfall tax" on the energy companies is that it would raise a lot of money and wouldn't raise much protest. After all, who is going to march on Parliament for the sake of E.On's profits? Who would be ready to dress up as Batman and stand...
No messing around with the river, please Chickens fighting, sheep always falling over, pigs had measles, dog's got fleas. Tractor, quad bike and digger, in pieces half the year. Roofs blowing off, hedges sprouting out of control like magic beanstalks, mulberries ailing. Beams failing. Badgers, rats, rooks,...
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