Licensed Bonded And Insured

(236)867-8830

Vancouver Building Maintenance
Vancouver Building Maintenance
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  • More
    • Home
    • roof repair
    • Skylights repair
    • window cleaning
    • About Us
    • chimney repair
    • Pressure washing
    • gutter cleaning
    • gutter repair
    • roof maintenance
    • Contact Us
    • west vancouver roofers
    • west vancouver skylights
    • attic ventilation
    • North vancouver skylights
    • pitt meadows skylights
    • mission skylights repair
    • white rock leaky skylight
    • New Westminster Skylight
    • Coquitlam Leaky Skylights
    • Delta BC Leaky Skylights
    • port coquitlam skylights
    • maple ridge skylights
    • Tsawwassen Skylights leak
    • Abbotsford skylight leaks
    • Chilliwack skylight leak
    • Whistler Leaky Skylights
    • Victoria Skylight Repair
    • white rock chimney repair
    • Surrey BC chimney repair
    • Mission BC chimney repair
    • Pitt Meadows chimney leak
    • Squamish chimney repair
    • langley bc chimney repair
    • Tsawwassen chimney repair
    • richmond bc chimney leaks
    • Maple Ridge chimney leaks
    • Port Moody chimney repair
    • West Vancouver chimneys
    • Burnaby chimney repair

(236)867-8830


  • Home
  • roof repair
  • Skylights repair
  • window cleaning
  • About Us
  • chimney repair
  • Pressure washing
  • gutter cleaning
  • gutter repair
  • roof maintenance
  • Contact Us
  • west vancouver roofers
  • west vancouver skylights
  • attic ventilation
  • North vancouver skylights
  • pitt meadows skylights
  • mission skylights repair
  • white rock leaky skylight
  • New Westminster Skylight
  • Coquitlam Leaky Skylights
  • Delta BC Leaky Skylights
  • port coquitlam skylights
  • maple ridge skylights
  • Tsawwassen Skylights leak
  • Abbotsford skylight leaks
  • Chilliwack skylight leak
  • Whistler Leaky Skylights
  • Victoria Skylight Repair
  • white rock chimney repair
  • Surrey BC chimney repair
  • Mission BC chimney repair
  • Pitt Meadows chimney leak
  • Squamish chimney repair
  • langley bc chimney repair
  • Tsawwassen chimney repair
  • richmond bc chimney leaks
  • Maple Ridge chimney leaks
  • Port Moody chimney repair
  • West Vancouver chimneys
  • Burnaby chimney repair

ROOF and attic venitlation


ROOF VENTS INCREASE ATTIC AIR EXHAUST CAPACITY


In summer, the primary purpose of ventilation is to expel hot air from the attic or roof to reduce the strain on air-conditioning systems.  In the winter, the primary purpose of ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent any moisture that moves from the conditioned living space to the attic.


DESIGN CONSIDERATIONS


  • Homes require 1 square foot of net free area (the total unobstructed area through which air can enter or exhaust a non-powered vent) for every 150 square feet of attic floor space. If balanced between intake and exhaust vents, the requirement is 1 square foot of net free area for every 300 square feet of attic floor space.
  • Multiple roof vents are usually needed to provide the required net free area
  • Must be spaced equally over roof to provide sufficient airflow along the entire roof sheathing


THE PROBLEM WITH RIDGE VENTS


Many newer homes are built with ridge vents, an generally they do a good job.  However, we see problems.  In the winter, attic moisture can rise to the ridge and settle on ridge screening.  As temperatures drop, the moisture freezes blocking attic air exhaust, thus trapping heat and moisture in the attic. The heated air melts snow on the roof deck, the melted snow runs down the roof deck to cold gutter where it freezes.  Eventually the gutter fill, the ice pushes up under and around nearby shingles resulting in ice dams.  Unaddressed, ice dams can cause damage to your roof structure, shingles and be costly to repair.


We Service

Vancouver Burnaby Coquitlam Delta New Westminster North Vancouver  West Vancouver  Port Coquitlam Port Moody Anmore Belcarra Maple Ridge Richmond Tsawwassen Annacis Island Langley Fort Langley Abbotsford White Rock Chilliwack Ladner Surrey Cloverdale Clayton Aldergrove Mission Pitt Meadows 



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