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Condensation forms in roof spaces and can be severe. Water droplets can drip ontoinsulation material or the ceiling of the room below. If there are timber roof trusses (beams) then severe condensation will cause rotting of timber which could lead to wet rot or even worse dry rot. Good ventilation will stop the build up of moisture. Improper roof ventilation may dramatically lessen the life of a roof and void your shingle warranty. The shingle manufacturer has specific guidelines for the amount of ventilation you need based on attic square footage. Attic ventilation is very important as too little will literally cook your shingles; which, will cause them to be brittle and this will make susceptible to wind, hail and storm damage. Your utility bills may also suffer as the excess heat from your attic may radiate through your ceiling and cause your air conditioner to run excessively.

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βˆ™ 2009-07-01 11:53:52
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Q: Why do you need roof ventilation?
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Related questions

Why is roof ventilation necessary?

Roof ventilation is necessary so that the air is in constant circulation keeping moisture levels low causing less future damage. Roof ventilation also increases energy efficiency in warmer climates.

Why are roof nails sweating in attic-- no roof leaks?

Not enough ventilation. Moisture from inside the house is condensing on the underneath side of the roof.

Does a hamster need ventilation?

yes a hamster does need ventilation:)

Why do animals need ventilation?

Animals need to breath, without ventilation the cannot do that.

Why did the globe theatre have no roof?

Easiest way to get good ventilation and daytime lighting was to leave the roof off.

What is the gable end for?

The gable end (of a roof) means you don't have to cut hip rafters to frame the roof. It also allows for cross ventilation in the roof space or if it's a living space permits area for windows without the need to build dormers.

What type of roof structure ventilation is considered superior?

ridge vent and powered

How often does a roof need to be replaced?

The longevity of your roof will depend on its materials, its installation, and its ventilation, so it’s hard to give a straight answer. Typically, a solid, well-constructed roof will last between 12-15 years. Depending on the quality and type of shingles you chose and the

What causes the wood roof to deteriote under the roofs tiles or singles?

Not enough ventilation under the roof and moisture collects on the underneath side.

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A phobia for ventilation in toilets is not normal and has no specific name.

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