If you put 1 gallon 8 34 pounds of 70 degree water sealed in plastic on a 160 degree roof and the water heats up to 130 degrees you ve consumed 500 btus of heat from the roof 60 degrees x 8 34 pounds.
Putting down thermal on roof.
Create an unvented roof putting foam on top of the sheathing.
Here we cover roof related scenarios to help prevent future mishaps like a missing roof.
That s where the toh crew s knowledge and your sweat equity enter the picture.
Built up roofs consist of a base sheet fabric reinforcement layers and usually a dark protective.
From what i ve learned here seal the seams of the osb roof sheathing with zip system tape to create an air tight barrier.
So you want r value on your attic floor and radiant barrier at the roof.
And then you put down horizontal battens for the roof panel attachment.
This involves putting down vertical battens first attaching them through the roof deck to the rafters.
Do you put the shiny side of foil insulation up or down on a metal roof.
Adding foil insulation between the wooden framing and.
This allows the new roof membrane installed on the original roof deck to run down and catch the wall water control and air control layer.
Single ply membranes are pre fabricated sheets rolled onto the roof and attached with mechanical fasteners adhered with chemical adhesives or held in place with ballast gravel stones or pavers.
Put down roof felt.
My roofing is steel and is designed to be mounted on battens purlins.
The thermal envelope is usually your walls and ceiling.
This is like putting a refrigerator in the shade.
Shingles stain condensation collects and high winds carry roofs wherever they please.
The problem with putting any r value on a roof is that the roof is normally not really part of the thermal envelope.
If an open grid framed roof or widely spaced old solid roofing planks as the sheathing it is important to tightly stretch this so it does not sag down and hold water between the framing roof sheathing boards and the metal roofing obviously far better to put down a solid sheet sheathing first when doing a reroof in that sort of situation.
It takes 1 btu to heat a pound of water by 1 degree.
Putting a safe roof over your head isn t necessarily a one time deal.
The roof just keeps it dry.
Metal is an energy efficient and cost effective roofing material.
This has very positive results as.
Department of energy the surface of a cool roof reflects more sunlight and releases more heat than a so called hot or dark roof.
Reformulate or coat black membranes to make them reflective.
How they can be made cool.
While the term cool roof is sometimes used to describe any roofing surface that is cooler than a standard rooftop green certification.
Roof edge framing and trim original rafters are extended but original roof deck sheathing cut back to be flush with the original wall sheathing.