Insulation Under Metal Roof Over Shingles

If you choose to install metal roofing over shingles there are certain things you must keep in mind.

Insulation under metal roof over shingles.

Start at the bottom of the roof and place the first piece of rigid foam insulation against the metal flashing starting at the center line. Metal roof insulation addresses two major goals. In this article we are going to explore both financial and technical aspects when it comes to looking for the best method to insulate the metal roofing. On a low pitch home which has an existing asphalt shingle insulation over asphalt shingles under metal roof 10 30 2004 within the roofing over existing roof discussion of the residential metal roofing forum.

Gable end detail overhang cut and then rebuilt to hide the thickness of the over roofing rigid insulation. They provide excellent protection against the elements but in many cases rain and hail sound very noisy under a metal roof. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. Talking about metal roof insulation this thing is one of the most challenging things people work in this field is facing it demands and requires excellent skill and expertise which you may only get from a reputable roofing contractor.

This is by far the most common way to install a metal roof. Installed a new fully adhered membrane to the top of the old board sheathing prior to adding all that rigid insulation. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. Yes providing a layer of insulation under a metal roof is imperative because metal is naturally a better heat conductor than wood.

Barrier insulation can also reduce your cooling cost during the summer months by reflecting heat away from your homes roof. Radiant barrier insulation will perform the best when used with a corrugated panel that has a built in airspace due to the corrugation. Basically speaking ignoring sub insulated roofs which are a special case with rigid foam board insulation directly under the metal roofing the roofing needs proper support to be able to handle snow ice loads wind loads and walking on during installation cleaning and maintenance. After all you ll be making a significant and long term investment.

Roof edge detail overhang extended to hide the thickness of the over roofing rigid insulation. Can i install a new metal roof over shingles. 3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof. A layer of soundproof insulation can help but it adds to the cost even more.

Both metal and shingle roofs are great options for your next roofing project. Installation of metal roofing over shingles.