Quantcast
Latest Stories

The pros and cons of roofing materials

By

ROOF shingles come in various designs and patterns available at Pars Builders at Ortigas Home Depot. Photo by Alvin Uy

The roof isn’t just a structure over our heads but it’s also known as the “spine,” or the backbone of the structure – the one that protects or shields the home’s “vital organs.”

Sharing with Inquirer Property the pros and cons of different roof types in the Philippines are Edilberto J. Morcilla, past president of the United Architects of the Philippines Sampaloc chapter (and now president of Rotary Club Las Piñas Camino Real); Home Depot marketing manager Alvin Uy; and forensic architect Froilan L. Hong, FUAP, FPIEP, Apec architect, and outstanding environmental planner of 2007 by the Professional Regulation Commission. A forensic architect such as Hong is a professional consultant who studies every stage of a building’s life cycle, from concept and construction to the end of its useful life.

Several roofing materials available locally are the pre-painted long-span metal roofing, corrugated GI (galvanized iron) sheets, clay or ceramic roof tiles, fiber cement shingles, asphalt and wood shingles. Morcilla says some buildings necessitate the use of another material, the concrete roof deck.

The most commonly used roofing material by rank and type of application would be the unpainted corrugated G.I. roofing for the low-end market, which Morcilla says, is the cheapest but would also corrode and deteriorate the fastest if not painted properly.

“Once corrosion sets in, it is very difficult to stop the deterioration, and the best way to arrest the problem is to replace the whole sheet,” Morcilla says.

However, according to Uy, GI roof sheets are economical and practical. “There are GI sheet roofs that are stamped and molded to look like clay roofs and are already available in terra cotta colors to resemble clay roofs.”

Most economical

Uy adds that GI sheet roofs are the most economical in terms of cost per square meter, and the required support structure is also most economical. It is the easiest to patch up, as well, since these can be easily performed by a homeowner.

STONE 2000 offers a special skylite roof tile that allows sunlight to permeate the roof. Photo by Alvin Uy

“Under extreme situations where the the GI roof has been rusted through and through and looks like cheddar cheese, one can choose to hire a professional company to apply a material called ‘roof foam.’” Uy explains that this is sprayed on and leaves a 1.5-inch thick layer of waterproofed, insulated hard foam-in-place. This shield also has excellent acoustic properties that during heavy rains would not create too much noise (this is also called drumproofing).

For his part, Hong says pre-painted longspan metal roofing is practical and economical. “Less joints mean less chances of leaks,” he says.

Morcilla says prepainted long-span metal roofing is chosen by mid- to mid-upper class markets, and able to better resist corrosion. “Some suppliers even warrant their prepainted products up to 15 years against corrosion. They also perform better against leaks, being cut according to the length required, thus avoiding horizontal overlapping, which is one of the causes of leaks. They are also installed using a special type of screw called the ‘tekscrew’ with rubber washer, which is water tight,” he explains.

Morcilla says it would be better to use long-span metal roofing than commercial-length roofing sheets to eliminate overlapping joints and minimize the potential for leaks. Hong agrees, stating that long-span sheets cover more area, requiring less joints. Both ordinary and long span sheets are readily available in the market.

He explains that in the Philippines, prepainted long-span metal roofing made of GI sheets are the most preferred. Other metals such as aluminum, tin, and copper can also be used to produce prepainted long-span roofing sheets, albeit more expensively.

Hong adds that being prepainted, the GI sheets are already factory-painted (and usually coated with zinc-aluminum to make it more durable and rust resistant).

“GI roofing sheets is what is referred to when the term ‘bubong na yero’ is used,” he observes.

Elegant but impractical

SPANISH ceramic roof tiles can be made to look old and finished with a realistic patina. Photo by Alvin Uy

Clay or ceramic roof tiles and shingles cater to the high-end market. They look elegant but are “very heavy and require metal under sheeting and battens to keep them in place. They seldom pose a leaking problem, but when they do, it would be a big task to resolve,” Morcilla says.

The concrete roof deck is one of the most difficult types of roof to maintain and to repair when leaking sets in. “Even the most expensive type of waterproofing could fail at the slightest mistake during application. Sometimes, it takes redoing the whole deck area just to solve a small leak, because it is so difficult to find the source of the leak in the concrete,” Morcilla explains.

Hong advises homeowners to avoid using asphalt shingles as their roofing material because these capture and conduct the heat toward the inside of the house.

For more inquiries or advice, e-mail architect Morcilla at bullet2859@yahoo.com.ph, Home Depot at alvin.uy@cwhomedepot.com or F.L. Hong Architects & Associates at flhongaa@yahoo.com.


Follow Us


Follow us on Facebook Follow on Twitter Follow on Twitter


Recent Stories:

Complete stories on our Digital Edition newsstand for tablets, netbooks and mobile phones; 14-issue free trial. About to step out? Get breaking alerts on your mobile.phone. Text ON INQ BREAKING to 4467, for Globe, Smart and Sun subscribers in the Philippines.

Tags: property , Real Estate , Roof , Roofing materials



Copyright © 2014, .
To subscribe to the Philippine Daily Inquirer newspaper in the Philippines, call +63 2 896-6000 for Metro Manila and Metro Cebu or email your subscription request here.
Factual errors? Contact the Philippine Daily Inquirer's day desk. Believe this article violates journalistic ethics? Contact the Inquirer's Reader's Advocate. Or write The Readers' Advocate:
c/o Philippine Daily Inquirer Chino Roces Avenue corner Yague and Mascardo Streets, Makati City, Metro Manila, Philippines Or fax nos. +63 2 8974793 to 94
Advertisement
Advertisement

News

  • Enrile chief aide back in PH ‘to face charges’–report
  • Pakistan library named ‘bin Laden,’ as memory fades
  • US teacher fired over comment on black president
  • Magnitude-7.5 earthquake shakes Mexican capital
  • Title of new Hillary Clinton book: ‘Hard Choices’
  • Sports

  • Motivated LeBron James preps for postseason
  • Nadal ousted by Ferrer in Monte Carlo quarters
  • Pacquiao shorts in Bradley fight sold for P1.7M in LA auction
  • Ryu pitches Dodgers past Giants
  • Alonso sets the pace in Chinese GP practice
  • Lifestyle

  • Levine designs womenswear with help from fiancee
  • Gabriel Garcia Marquez, Nobel laureate, dies at 87
  • Ford Mustang turns 50 atop Empire State Building
  • Pro visual artists, lensmen to judge Pagcor’s photo contest
  • ‘Labahita a la bacalao’
  • Entertainment

  • Myx TV premieres Asian American ‘docu-series’
  • A nutty finale for ‘Scandal,’ TV’s craziest show
  • EXO postpones release of mini album ‘Overdose’
  • ‘X-men’ filmmaker slams ‘fabricated’ sex attack claims
  • Singer Chris Brown’s bodyguard on trial in DC
  • Business

  • US commerce secretary spells out economic facet of ‘pivot to Asia’
  • Italy sells luxury state cars on eBay
  • Asian shares mostly up in quiet trade
  • Dollar up in Asia on US jobs data, Ukraine deal
  • Barbie doll has a problem
  • Technology

  • Nasa’s moon-orbiting robot crashes down
  • Netizens pay respects to Gabriel Garcia Marquez
  • Nokia recalls 30,000 chargers for Lumia 2520 tablet
  • Facebook rolls out ‘nearby friends’ feature
  • Netizens seethe over Aquino’s ‘sacrifice’ message
  • Opinion

  • Editorial cartoon, April 17, 2014
  • A humbler Church
  • Deepest darkness
  • ‘Agnihotra’ for Earth’s health
  • It’s the Holy Week, time to think of others
  • Global Nation

  • Multicultural flock marks Good Friday in San Francisco
  • Las Vegas ‘Pinoy Pride’ fest hails Filipino heritage
  • Marking Jesus’ journey on Good Friday
  • Filipina accomplice arrested for fake bills in Malaysia
  • DoH denies Filipino nurse no longer positive for MERS virus
  • Marketplace