Frost On Roof Decking

Once you start seeing a thicker buildup with icicles that s when you know for sure your have a problem.

Frost on roof decking.

1 the warm roof deck causes the snow on top of the roof deck to melt and the melt water runs down to the edge of the roof where the water freezes leading to a buildup of ice and a backup of water hence the term dam figure 1. The heat is thawing the rafters too but the have more mass to absorb the heat and keep the deck above them frosty. This is usually because low quality leak prone decking materials such as epdm rubber are used often in an effort to save money. How to get a solid frost proof footing.

Unfortunately many homeowners who have a flat deck roof have to deal with frequent leaks. Previous options for roof decks were pretty drab in flat greys whites and beige. Luckily today s printing technology allows you a variety of choice so you can create an enjoyable outdoor living space. Remove the shingles over the area of the rotted roof decking identified previously.

Locate nails that hold shingles in place by lifting up on the end shingle above the one you plan to remove. Ice dams photograph 1 happen when the outside temperature is below freezing the roof deck temperature is above freezing and there is snow on the roof. Vinyl decking looks great on roof decks. Do this by nailing the sides of the tube to the center of a tic tac toe grid of 2x4s at the top of the hole.

On average 300 sq ft. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen. Of roof decking costs 800 2 800 to install depending on the material you choose. Ice and water protector sometimes also referred to as ice and water shield is a waterproof roof underlayment membrane developed to protect vulnerable areas on a roof from ice and water damage.

If all of that is up to snuff a small amount of frost on the rafter line is normal on really cold days. Moisture from leaks usually means that there is an ice dam with water entering the roof system under pressure. On going back inside the attic the frost had melted and the underside of the sheathing was wet not so much that it was dripping but enough that it was damp. Warm attics also show the outline of the rafters underneath the roof deck as the escaping heat going as heat does to where heat isn t melts the frost.

It is highly unusual for there being enough moisture in ambient winter air to form condensation frost on the underside of the roof deck in winter. Notice how the garage area stays frosted and the rest of the house roof thaws. When you pour concrete footings hold the cardboard concrete form tube about 12 in. Up from the bottom of the footing.