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.
ridge vent and powered
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.
It allows the drains to flow freely and the stench of the sewer to be sent to the highest point in the roof. That is why p-traps are installed, so the sewer gasses go to the roof vents and not through the water in the traps.
Normally it's not a very big project however it takes knowledge and experience to achieve the proper effect. It always depends on lengths and highest of roof. A walkable pitched roof I's always cheaper starting from around $150-$500 a more steep roof could start at $300-$1000 depending on amount of staging needed
30 compression and 2 ventilation
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.
Not enough ventilation. Moisture from inside the house is condensing on the underneath side of the roof.
Easiest way to get good ventilation and daytime lighting was to leave the roof off.
ridge vent and powered
Gable vents are actually counter productive when used with ridge vents. It is better to have ventilation at the soffits which will create a draft drawing in cooler air and exhausting it through the ridge.
Not enough ventilation under the roof and moisture collects on the underneath side.
A phobia for ventilation in toilets is not normal and has no specific name.
the roof is double layered with provition for ventilation of the space between the 2 layers
The purpose of having roof vents are the following; preserving the life of the roof, reducing the moisture inside the roof, maintaining the right ventilation inside the roof to avoid molds and moisture and for aesthetic and style purposes as well.
Depends how much weed your growing.
I would recommend putting in roof vents. We have this same problem with our attic and we have put in roof vents and also insulated it so that we can keep the heat down throughout the rest of the house.
This allow cool air to enter into the room.