I concur with RJ! Your new shingles will not last nearly as long laid over old ones, the wind is more likely to remove them, the heat to distort and accelerate their failure and you won't have the opportunity to inspect the decking for prospective repair and/or maintenance. The extra cost is really an investment.
Like RJ, I see no value in adding a layer of roofing felt. I believe he has it right. ----- Original Message ----- From: RJ To: [email protected] Sent: Monday, July 28, 2008 1:11 PM Subject: Re: [BlindHandyMan] Roofing A utility knife will cut the shingles. Just cut them on the reverse side. If there was any way to talk you out of shingling over the old shingles, I would. Felt isn't necessary if you insist on going over the old shingles. Tips. I would put down drip edge on all edgesand a guide is a handy tool made of a 3/4 inch board about 3 inches wide and 7 or 8 inch high. Just cut out the groove length needed for the shingles you are applying. 4 or 5 inches is standard. You will also find slits on the shingle on the top you can run your first row and than start from any where on the roof using the slits. There is also slits on the side for the right spacer of the shingles. I don't use these but the spacer jig. , to make sure your tabs are in alinement. architectural shingles I like the best , but only put them on once. They are easy to apply, but they had a line where to apply the nail. Had to make a jig to air nail the shingles in the right area. RJ, ----- Original Message ----- From: Ralph Supernaw To: [email protected] Sent: Monday, July 28, 2008 12:35 PM Subject: [BlindHandyMan] Roofing I am making plans to shingle my house. It currently has one layer so I'm planning to shingle over the current layer rather than remove it. I have a couple questions: 1. What do you use to cut the shingles. I can't imagine what would stay sharp after two or three shingles. 2. Do I need to lay down a layer of felt or can I put the shingles directly on the current layer? Any other tips and tricks you might suggest would be appreciated. Ralph [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.5.6/1577 - Release Date: 7/28/2008 6:55 AM [Non-text portions of this message have been removed]
