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Builders LondonVarious Roof Systems to Choose From Determining which roof is right for you has many considerations; including style, color, durability, cost, and ease of installation. Asphalt roof shingles are the most common choice. They are available in many different colors, are relatively easy to install, and are relatively affordable in cost. They require little or no maintenance when new, but begin to crack and curl over time. Repairs are relatively easy to perform. The average life span of asphalt shingles is 15 to 20 years; high-quality shingles provides improved weather and fire resistance, and can last up to 35 years. Cedar shingles or cedar shakes are popular choices, but are significantly more expensive than asphalt shingles. Cedar shingles can last more than 20 years; properly installed and maintained, cedar shakes have a life span of 50 years or more. Left untreated, both have a poor fire rating; they will warp, split, rot, and weather. Therefore, periodic treatment with a product made for that purpose is recommended. Cedar shingles and shakes are neither difficult to repair or replace. A metal roof is becoming an increasingly popular choice. There are several types of metal roofing such as terne (tin/steel alloy), copper, aluminum, galvanized steel, and vinyl-clad steel. Some vinyl-clad steel manufacturers tout a life span of nearly 100 years; traditional painted aluminum or steel may last 35 years; terne lasting up to 50 years. Another modern upper end choice is a copper roof for both durability and appearance. A metal roof must be flashed and fastened with the same type metal to avoid electrolytic action and subsequent corrosion. Metal roofing is relatively expensive, but the life span of some choices can be well worth the investment Roof tile such as roof slate, concrete roof tile or clay roof tile has the longest life span of any roofing material; it will last for the life of the house, requires little maintenance, and is absolutely fire proof. However, an occasional cracked, broken, or chipped tile can be difficult to repair. If not attended to promptly and accurately, damage to existing roof system components beneath can result. Tile is heavy, has limited color choices, and is quite expensive. Built up roofing or hot roof is the most difficult to install. Hiring an experienced contractor is a must to completely waterproof flat or slightly pitched roofs. Built up roofing is fabricated on the roof itself, by laminating layers of special felt with heated asphalt, followed by a gravel topping. This is an expensive choice in roofing. Life span is relatively short; 5 to 20 years. The more layers, the longer the life expectancy. Rolled roofing is constructed from the same type material as asphalt shingles and is relatively inexpensive. It is simply rolled out in overlapping layers and fastened in place. It has a short life span of 5 to 15 years, and is used primarily as a quick fix. 1. 'Green collars' becoming a force in U.S. economy data: 27.03.08 The United States may have 8.5 million jobs in renewable-energy or energy-efficient industries now, with up to 5 million to be added over the next 10 years. 2. Turkish court weighs bid to shut down governing party data: 07.04.08 The petition alleging Islamist activities has divided Turkey, increased uncertainty in the financial markets and could undermine Ankara's campaign to join the European Union. 3. Risk-taking architect takes field's top prize data: 07.04.08 Jean Nouvel, the bold French architect known for such wildly diverse projects as the exotically louvered Arab World Institute in Paris and the muscular Guthrie Theater in Minneapolis, has received the Pritzker Prize. 4. Microsoft steps up takeover pressure on Yahoo data: 07.04.08 Microsoft has turned up the heat in its efforts to acquire Yahoo, promising an all-out hostile takeover battle before the end of the month and hinting that it would... 5. Wine maker insures nose for ÂŁ3.9m data: 19.03.08 A Bordeaux wine maker has insured his nose for ÂŁ3.9 million, the Lloyd's of London insurance market said. 6. Extra troops to be sent to fight Taliban data: 07.04.08 Britain is poised to send another 450 troops to Afghanistan and take control of its most war-torn region for at least the next two years following pressure from the United States, The Daily Telegraph has learned. 7. Mugabe focus for Brown, Mbeki data: 07.04.08 Gordon Brown has held talks with South African President Thabo Mbeki to help end the crisis in Zimbabwe. 8. Poland could face EU treaty vote data: 19.03.08 Polish Prime Minister Donald Tusk says a referendum may be needed to end a row over the EU Lisbon Treaty. 9. Tories seek post office rethink data: 19.03.08 The Conservatives are hoping to put controversial plans to close 2,500 post offices to the vote in Parliament. 10. Millions strike in Greece to protest plan to overhaul pensions data: 27.03.08 The national strike on Wednesday - the third since December - capped nearly a month of labor unrest that has brought power blackouts, heaps of uncollected garbage and transport disruption. 11. Olympic torch relay protest timeline data: 07.04.08 The Olympic torch relay through London descended into chaos after pro-Tibet protesters disrupted the event, leading to 35 arrests. Here is a timeline of events. 12. Woods targets fifth Masters title data: 10.04.08 Tiger Woods will take aim at an historic Grand Slam when the first round of the Masters begins at Augusta on Thursday. 13. Comaneci no longer inspires Romanian gymnasts data: 27.03.08 Romanian girls no longer dream of being Nadia Comaneci -- that is the hard fact facing the country's women's gymnastics coach. 14. Green power station opened data: 19.03.08 First Minister Alex Salmond is to officially open a £90m biomass power station in the south of Scotland. 15. Ecuador's military chiefs resign data: 10.04.08 Ecuador's top four military commanders resign after the president accuses the military of aiding Colombia. 16. Jean Todt’s talk with the press data: 27.03.08 17. Showbiz: ROBBIE WILLIAMS BACK IN REHAB data: 19.03.08 ROBBIE Williams has been admitted into a rehab clinic for dependency on prescription drugs, his spokeswoman announced today. 18. Obama calls for Beijing boycott data: 10.04.08 Barack Obama urges President Bush to consider a boycott of the Beijing Olympics, as the US leg of the torch relay is held. 19. Kosovo adopts a new constitution data: 10.04.08 Kosovo adopts a new constitution, to come into force in June after an expected UN handover of powers. 20. 2 charged in Denmark with preparing terror attack data: 27.03.08 Danish prosecutors have charged two suspects with preparing explosives for an attack in Denmark or abroad. 21. Yahoo seeks boost from ad sales system data: 07.04.08 New platform aims to simplify significantly the process of buying and selling adverts online and improve Yahoo's value in the face of Microsoft's renewed takeover efforts 22. Prince discharged from hospital data: 07.04.08 The Duke of Edinburgh is discharged from a London hospital after being treated for a chest infection. 23. President of Montenegro wins landslide re-election data: 10.04.08 The presidential vote Sunday, the first since independence, dashed the hopes of the Serb minority, who had backed a pro-Serb candidate who might have brought them closer economic and political ties with Belgrade. The two countries have had chilly relations since the breakup. 24. Snow covers London ahead of Olympic torch relay data: 07.04.08 Snow fell across London on Sunday before an Olympic torch relay through the capital that is expected to attract anti-China protests. 25. Islam overtakes Catholicism in number of adherents data: 07.04.08 Muslims made up 19.2 percent of the world's population and Catholics 17.4 percent, the Vatican said Sunday. 26. Live qualifying notes data: 27.03.08 27. 'Some progress' in Russia-US ties data: 07.04.08 George Bush and Vladimir Putin sign a basic agreement on bilateral ties, without a breakthrough on differences. 28. Zimbabwe crisis talks called data: 10.04.08 Zambia announces a regional emergency meeting to discuss Zimbabwe's post-election impasse. 29. City: Virgin to jettison massages data: 10.04.08 Virgin Atlantic's firstclass passengers will be a little less pampered in future - if plans to axe the airline's 280 onboard beauty therapists go-ahead. 30. Latest Pictures: Anthony Minghella CBE - 1954-2008 data: 19.03.08 Anthony Minghella CBE - 1954-2008 |