adding metal roof & foam board insulation | Ask The Experts Forum

Guest User 6/25/2009	I have a gable roof, poorly insulated r-19, vaulted ceilings and asphalt shingles. 13 roof mount ventilators and a metal chimney. I would like to add 2'foam board insulation and maybe reflective insulation also. Should I go with tar paper or water shield? I have purchased nor clad metal roofing and getting ready to start this project. I need as much direction as possible sure there are several ways to do this project. All help would be appreciated.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13485/find/
Todd Miller Isaiah Industries, Inc. 6/25/2009	Is your attic ventilated? Especially in your climate I would think insulation would best be invested in for the attic (above your ceilings) rather than up on the roof.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13486/find/
Guest User 6/25/2009	Yes, I have r-19 in the ceiling which is vaulted no attic The only way to add insulation is on the roof unless I were to pull down t&g red cedar from the ceiling.The roof has roof mounted ventilations that ron down to the soffit which is screened.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13487/find/
Guest User 6/27/2009	any suggestions todd	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13488/find/
Todd Miller Isaiah Industries, Inc. 6/28/2009	You can put down rigid insulation. I am not a huge fan of it as I feel it makes the roofing process a little more difficult. Make sure that the roofing manufacturer is okay with what you're doing. As far as a radiant barrier ... if it is going to be part of a tight sandwich of materials, it will lose its effectiveness and probably not be worthwhile. I would suggest either 30 pound felt or a synthetic underlayment. I would not ice and watershield the entire roof as that makes the system less breathable and that could lead to condensation issues in your case.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13489/find/
Guest User 6/29/2009	Thanks for the advice.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13490/find/
Todd Miller Isaiah Industries, Inc. 6/30/2009	You are welcome	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13491/find/
Guest User 7/29/2009	What type of adhesive can be used to adhere the insulation to the metal roof?	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13492/find/
Guest User 7/30/2009	Rigid board is typically screwed down to the deck using large, plate type washers.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13493/find/
Todd Miller Isaiah Industries, Inc. 8/1/2009	Thanks.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13494/find/
Aaron Scurlock The Best in Polymer Roofing Soutions 8/25/2009	There are low rise foams that can be used to firmly adhere iso board if you do not want screws penetrating.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/13495/find/

Find a Professional

Get Started Today

Take the first step to increasing the value of your home with a great looking, durable, fire resistant and energy efficient metal roof. Browse our list of qualified MRA Member Roofing Professionals in your area for a free consultation and estimate.

Search Now