i have some questions1is it necessary.?2is the opening remain open all year around.?3what is the best material for the doom on the roof vent?
this is chemicalin actuality The Hydrochloric acid is in a answer with Chloride ions and Hydrogen ions (H+ and Cl-)The reaction with the iron releases Hydrogen gas collectively as forming Iron Chloride.
You need a roof vent for attic ventilation, this allows your attic to remain cool and keeps it dryThe area that you live in and the climate will dictate how big an opening you needAlso the level of insulation exisiting within your attic as well as ventilation down to the eves will also help it outSO yes its necessary, and here in Minnesota even with snow they remain open year round, and a more effective vent is those spinning ones they are an active vent and move a lot of airCheck out the link different types.
