It prevents heat from passing through.
Roof insulation to keep heat out.
In most cases ceiling insulation is installed between the joists see insulation installation.
Roofs and ceilings work in conjunction when it comes to insulation.
Install insulation under the roofing material to reduce radiant heat gain.
It s designed to reflect heat radiation but also comes combined with bulk insulation like glass wool or rock wool batts to create a composite type insulation which insulates against heat transfer through convection and conduction too.
In summer a similar concept applies.
Install insulation in the ceiling to reduce heat gain and loss.
Ceiling insulation products and materials become the heat flow barrier between your roof tiles and ceiling boards.
Here s how it works.
The more insulation you have between the actual living area and the roof the better.
It will work as a barrier to keep the heat away from the home in the summer while keeping the warmth inside in the winter.
Coupling with fiberglass insulation between the rafters should significantly reduce the amount of heat coming through the roof.
All of the heat that strikes your roof is trapped in your roof space and its movement into your home is slowed.
In winter your roof insulation blocks the cold air keeping your home warmer and giving your heater less work to do.
Keeping you cooler in summer and warmer in winter throughout the year.
If your home does get heated during the summer months look into adding more insulation in the attic or within the roof trusses.
Foil insulation is ideal for hot weather and is mostly used in roofs and walls.