As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in.
Houses without attics.
The numbers are based on your house s location and climate zone.
Do not use mechanical means electric attic fans.
Most federal tax credits for weatherizing your house and boosting its energy efficiency expired in 2011.
Classic older homes may radiate beauty and charm but they are often uncomfortably drafty especially during cold months.
Attic ventilation keeps your house cooler in summer and it prevents moisture from building up in winter and ruining your roof framing and insulation.
The department of energy recommends these minimum r values for unfinished unconditioned attics.
Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed.
They breathe through air leaks and houses built before the 1960s were usually not well insulated.
Unlike today s airtight homes many old houses have a natural ventilation system.
There are homes designed without attics and there are homeowners who wish to raise their ceilings but there are energy efficiency concerns with having no attic.