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Browse Ventilation Subtopics

 
 
 

Ventilation

  • Q&A: Condensation on Windows

    Q. A customer with insulated-glass windows has a problem with excessive condensation on the interior of the windows. Can you please list the most important causes of high humidity in a home? A. Energy and sustainable

     
  • Q&A: Sizing a Range Hood Fan

    Q: How do I size the exhaust fan for a range hood above a gas cooktop?

     
  • Q&A: Right Size for an Insulating Air Space

    Q: How big does an air space need to be before it stops working as insulation and starts working as a convective loop?

     
  • Q&A: Makeup Air for an Exhaust-Only Ventilation System

    Q: Q. I’m building a tight house with above-average attention to air sealing, and I plan to ventilate with a Panasonic exhaust fan running continuously. Will the cracks around windows and doors admit adequate makeup air, or do I need to provide wall vents

     
  • Kitchen & Bath: Venting Professional-Style Kitchen Ranges

    Venting professional-style kitchen ranges

     
  • Q&A: Asphalt Shingles on Unvented Roofs

    Q: Our insulation subcontractor advises us to install dense-pack cellulose in the rafter bays over a cathedral ceiling, without ventilation baffles, and the local building inspector approves. If we don’t ventilate under the roof sheathing, what happens to

     
  • Q&A: Powered Attic Ventilation

    Q: I am trying to plan the best way to ventilate a hipped roof above an attic. Since the ridge is very short, ridge venting is not an option. I was planning to install powered exhaust ventilation. How should I size the fan?

     
  • Q&A: Attic Ventilation Details

    Q: I am improving the attic ventilation in a 30-year-old two-story house in Virginia. My plan is to install soffit vents and insulation baffles. The attic has gable vents with thermostatically controlled fans. Do I have to install a ridge vent, or are the

     
  • Products

    Ready-made business forms; ventilating fan for toilet bowl; generator wheel kit; rack for production door painting; hot wheelbarrow add-ons; more

     
  • Q&A: Makeup Air for Fireplaces and Exhaust Fans

    Q: In a house I am building, I need to provide adequate makeup air for a fireplace and a 600-cfm cooktop exhaust fan. How do I size a passive duct to introduce exterior makeup air into the house?

     
  • Choosing a Whole-House Ventilation System

    Homeowners and code officials are beginning to insist on better mechanical ventilation systems. A ventilation expert helps you choose the best system for your climate.

     
  • Kitchen & Bath: Effective Bathroom Ventilation

    Sizing a bathroom vent fan

     
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    Designing Better Kitchens

    Many common kitchen design elements are inefficient or downright dangerous. These guidelines from a kitchen specialist will help you create kitchens that not only look great and work well, but are safe to use.

     
  • K&B Problem-Solvers

    This selection of products will help you design, install, and customize functional, attractive kitchens and bathrooms.

     
  • Crawlspace Ventilation Update

    Most crawlspaces should be carefully sealed, not ventilated. In many areas, however, the codes are still catching up with best practice.

     
  • Notebook

    Coping with the labor shortage, water heater failures, higher fly ash content in concrete, new home ventilation standard

     
  • Plumbing Venting Explained

    Ever wonder why the plumber insists on notching and boring the framing to run all those vent lines up through the house? A master plumber explains the whys and wherefores of venting rules, and tells how he goes beyond code minimums to avoid callbacks.

     
  • Q&A: Carpet Filtration Mystery

    Q: We are builders in the Philadelphia area. Over the past few years, we’ve experienced several cases of what we’ve been told is "carpet filtration" — dark ghost lines that appear on the carpet under doors and around the perimeter of rooms. We tested the hvac system and found a sizeable imbalance...

     
  • Products

    Remote-mounted vent fans, flexible gas tubing, OSB with layout lines, MDF molding, electrical box extender, weatherproof adhesive, two-part urethane foam, tall entry doors, foil-faced bubble wrap, heavy-duty lockset, water purification system, laminate flooring, steam bath generator

     
  • CO Leaks Causes & Cures

    In today’s tighter houses, carbon monoxide leaks are potentially more deadly than ever. These three case studies show how careful detective work can uncover and eliminate common sources of CO contamination.

     
 
 
 
 
JLC Field Guide to Decking