7381 Guide Meridian Rd.

Lynden, WA 98264

Phone: 360-354-4335

Fax: 360-354--1335

GREEN SOLUTIONS


Partnering with industry leaders and staying ahead of the industry curves, Hytech Roofing is actively and enthusiastically involved in Garden Roofing applications on roof slopes, extensive flat roof systems, as well as modular tray assemblies. Hytech Roofing is prepared and accustomed to help general contractors attain LEED credits in many areas. Whether you are looking to make your home or business more “green” or are a General Contractor looking for LEED credits there are many ways that we can help.

What is Garder Roofing?

A Garden roof system is an extension of the existing roof which involves a high quality water proofing and root repellant system, a drainage system, filter cloth, a lightweight growing medium and plants.

Why Green Roof?

  • Cost Effective
  • Sound Insulation
  • Food Production
  • Improved Air Quality
  • Health

Cost Effective

It is estimated that green roofs will last up to twice as long as conventional roofs due to the added protection of the waterproofing membrane. Also, expect to save on energy and heating costs. Historically, green roofs have been used to insulate buildings. Shading the external surface of the building envelope has been shown to be more effective than internal insulation. Experiments in Ottawa, Canada found that a 6” extensive green roof reduced heat gains by 95% and heat losses by 26% compared to a standard roof assembly. The estimated R- Value of a typical dry 4" deep roof garden is approximately 12.

Sound Insulation

Soil, plants and the trapped layer of air can be used to insulate for sound. Sound waves that are produced by machinery, traffic or airplanes can be absorbed, reflected or deflected. The substrate tends to block lower sound frequencies and the plants block higher frequencies. A green roof with a 4.7 inches substrate layer can reduce sound by 40 decibels; a 20 cm (7.9 inches) substrate layer can reduce sound by 46-50 decibels.

Food Production

Believe it or not but the roof is an excellent place to grow food for your kitchen cutting down on annual grocery bills. A well known hotel in Vancouver, BC grows herbs, flowers, and vegetables on its roof, saving its kitchen 30,000 a year in food costs.

Improved Air Quality

Green roofs not only absorb heat (helping with the heat island affect), but will also filter the air moving across it. Ten square feet of grass can remove up to .2kg of airborne particles from the air you’re breathing, every year. Also consider, 16 square feet of uncut grass produces enough oxygen per year to supply one human with his/her yearly oxygen intake.

Sound Insulation

Soil, plants and the trapped layer of air can be used to insulate for sound. Sound waves that are produced by machinery, traffic or airplanes can be absorbed, reflected or deflected. The substrate tends to block lower sound frequencies and the plants block higher frequencies. A green roof with a 4.7 inches substrate layer can reduce sound by 40 decibels; a 20 cm (7.9 inches) substrate layer can reduce sound by 46-50 decibels.

Health

Patients in the same hospital, recovering from the same operation, were studied as to the restorative effects of views onto a landscaped courtyard versus a brick wall. The patients with the green view had shorter post-operative stays and took fewer moderate and stronger painkillers.

LEED (Leadership in Energy and Environmental Design)

There are many more benefits to roof gardens, please ask us if you would like more information. We would be happy to help. Hytech Roofing feels it is a huge benefit to help you understand how your building will qualify for LEED credits. We are familiar with the LEED process and can lend a hand in the paperwork and communication with other LEED team members. The following are LEED Credits that we may be able to help your project achieve.

  • Stormwater Design- Quantity Control
  • Stormwater Design- Quality Control
  • Innovative Wastewater Technologies
  • Heat Island Effect- Roof
  • Reduced Site Disturbance
  • Optimize Energy Performance
  • Innovation in Design
  • Recycle Content
  • Construction Waste Management
  • Regional Materials
  • Low Emitting Materials

Information on the Environmental Impact of Buildings

  • 65% of the total U.S. electricity consumption
    • Per year, one incandescent light bulb accounts for the production or use of the following:
      • Burns 528 lbs of coal
      • Releases 3/4 ton of carbon dioxide
      • Release 20 pound of sulfur dioxide
    • One 3' x 5' window in direct sunlight will allow in as much light as 100 60-watt light bulbs.
    • The per capita use of electricity has doubled since 1970 in the USA
  • 36% of total U.S. primary energy use
  • 30% of total greenhouse gas emissions
  • 12% of the potable water usage in the U.S.
    • U.S. withdraws 340-billion gallons of water per day from rivers, steams and lakes
    • Five (5) billion gallons of this potable water is used to just flush toilets
  • 40% of the raw materials used globally (3-billion tons annually)
  • 30% of the buildings in the U.S. have or are developing "sick-building syndrome"