Air flows in through the soffit vents and out through the roof vents.
Loft insulation roof ventilation.
Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior.
The main types as as follows.
Increasing the level of insulation in your loft without providing additional roof ventilation.
For the best results place roof ventilation near the roof s peak and soffit vents in the eaves.
We chose rectangular hooded roofing vents and rectangular soffit vents because they re easy to install.
Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have cross ventilation for each separate space by ventilating openings protected against the entrance of rain or snow.
The simplest and cheapest loft insulation solution is the classic cold loft option.
Https youtu be tp7d t5wfzc this video takes a look at the basics of roof ventilation a.
Different types of loft ventilation.
Whole house fans powered attic fans.
A well ventilated home is drier healthier and more comfortable.
This means insulation can be brought forward to the very edges of the plasterboard or cavity insulation safe in the knowledge an air gap will be maintained and air will be channeled up and over the insulation rather than through it.
These are typically installed at the time of construction.
This involves insulating between and over the wooden joists immediately above the ceiling of your top floor.
These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and.
Well placed windows doors and other openings allow air to circulate without creating.
Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have cross ventilation for each separate space by ventilating openings protected against the entrance of rain or snow.
Loft vent trays or rafter trays are often used to keep an air gap between the underside of the roof and the insulation too.
Ventilation openings shall have a least dimension of 1 16 inch 1 6 mm minimum and 1 4 inch 6 4 mm maximum.
Vents come in various styles.
An alternative way to insulate your loft is to fit the insulation between and over the rafters these are the sloping timbers that make up the roof itself.
About california ventilation building codes.
This is my video on how to cure condensation and mould in the home.
Running vents which run the full length of the soffit boards.