Insulating Metal Roof In Cold Climates

You want your entire metal roof including the eaves as ventilated as possible and are very well insulated.

Insulating metal roof in cold climates.

Some roof assemblies use very impermeable materials such as peel and stick membranes on the exterior. That s a ton of insulation but you need it in these cold climates. However while metal roofing can act as a repellent for snow it requires additional insulation for colder climates. In cold climate zones the minimum total r value for the entire unvented roof assembly should be r 40.

Ventilating the underside of the roof insulating the attic floor and plugging air leaks are usually the answer. Some metal roofing can also withstand strong winds making it ideal for blizzard climates. Pros and cons of metal roofs in cold climates. Insulate the ceiling adequately.

We recommend always having a roof deck installed so there can be an underlayment applied for ice dam protection. Zones 5 6 7 and 8 in that the manufacturers of these materials assume that roof deck may require ventilation to assist drying. Keep the entire roof as cold as the eaves. Stainless steel tends to be soft.

Don t forget to make sure it s plugged in. In very cold climate zones this minimum r value should be increased to r 50. Otherwise homeowners will find their heating system has to work harder to keep the home warm. Metal roofs are a good long term investment for those in colder areas of the country.

Fiberglass is also one of the preferred materials for metal and steel buildings and homes. Ask me how i know. In order to control ice damming heat flow form the interior to the roof cladding must be minimized. Colors such as bronze brown or dark gray versus white or light earth tones will help do the trick.

Care should be taken with these assemblies particularly in cold climate zone locations i e. In the northern parts of the country zones 5 8 energystar recommends insulating your attic to somewhere between r49 60. Rigid board made from fiberglass would be the best option for roofs and basements as the high insulation rating allows it to insulate the home better than say loose fill or batt and blanket. Consider a roof color with a high solar absorption value that will help thaw snow and ice.

Stay away from stainless steel screws because the heads twist off. You want a cool roof a cool roof is essential when installing one in the cold climate of minnesota or wisconsin. Heat rises and without sufficient insulation under your roof you will be loosing all that precious and expensive heat out of the top of the house. You can purchase 14 in.

Avoid roof geometry that causes shading which can lead to ice damming. Use designs with a cold roof such as those featuring a vented attic.