Roof Insulation On Metal Deck

Heat and cold penetrate metal.

Roof insulation on metal deck.

On one project in kansas we installed 1 x 1 along both sides of the rafters and then added 3 8 plywood to them. Free ventilation area of attic ventilation for every 150 sq. Tectum e tectum e n acoustical roof deck description. Three in one composite roof deck panels provide acoustics insulation and a nailable surface that accepts a wide variety of roofing materials.

This type of fastening also is acceptable on other deck types including cast in place concrete and gypsum. 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. Because the insulation is so close to the roof and you want to avoid unwanted moisture buildup these roofs will need to be completely sealed off. It involves adding an air chamber under the roof deck.

Insulation must secure properly to the roof deck to provide an acceptable substrate for the roof covering. The dew point is typically within the insulation layer lowering condensation risks. For most of us in the low slope roofing industry it s considered to be absolutely standard to have insulation placed above the roof deck. Make sure there is adequate air flow from the eave vents to the attic area.

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. Air sealing hot roofs is critical. Mechanical fastening with self tapping screws and plates is the most common and approved method for insulation attachment on steel and wood roof decks. Of attic floor area and where at least 30 percent of the free ventilation area.

Our new smooth series cellular deck offers a blemish free beam to pan rivet. Metal roofs are durable and last much longer than conventional roof deck and shingle constructions but they come with a drawback. Remove existing roofing and non adhered underlayment to expose roof sheathing. This gives a 1 air space between the roof deck and the insulated area.

Insulation with a thermal resistance of at least 0 85hr ft2 degree f btu or at least 3 4 inch air space is added to the roof deck over an attic or 7. Ceiling insulation is then installed on the attic floor. We then vented that space through the roof deck as was the normal practice for roofing. Metal roofs are poor insulators.

Vented attics have insulation installed underneath the roof deck in direct contact with the decking. In climate zones 10 12 and 13 with 1 sq. R 19 insulation is typically installed in the vented attic application. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.