P: Please add layflat paper offered by Blurb in Book module

I've just attempted this and still having the same issue. And received the same response from Blurb - Adobe is responsible for the Book module within Lightroom. Blurb will be working with Adobe to see if they will add support for Standard Layflat Paper. 

Mine was brilliant: vivid, exact color, robust paper, and a smooth cover. 

None of which matters as it's off-topic. This thread is about LR supporting a Blurb configuration, not whether we like the resulting product. And good or bad, it would be nice if the option were available.

Don't waste your time on layflat layer. I just order one, the result is awful...
And I was really happy with the "usual" print option.
The layflat come from another printing company .

It's really important to read most or all of the comments above which already address the idea of exporting from LR to a PDF.

If LR doesn't understand that layout of the book, especially the cover, as well as how the pages join, then creating a PDF isn't adequate. No amount of "work around" is going to get you a good result.

So what Valerie points out (again) is (still) correct.

The only solution is to use the blurb tool. I just did this, excellent results, not difficult, other than having to collect and export my images as large, hi-res files. The end result was worth it.

A few days ago, I read on Blurb's support area that doing this was not recommended from Lightroom to Blurb as the pdf file dimensions would be slightly off. Now that I have searched for it again on Blurb, it seems to mysteriously be missing, I will keep searching and share here if I find it. Thanks for the suggestion tho.

You could Export your book to PDF and upload the PDF to Blurb.
Check that your cover design and page numbers conform to Blurb's requirements.

Please add the Layflat option to the Book Module in Lightroom!!

PLEASE make this a priority! I was so excited to see Blurb added the lay flat option! So excited, in fact, that I built my very first Blurb book in Lightroom two weeks ago only to find that I could not order lay flat? WTH? I couldn't believe it, after hours of laboring over getting my first, ever Blurb book via LR just right. So upset. I never thought LR wouldn't have been able to manage lay flat once Blurb thought of doing it, isn't there a partnership here? Thanks....frustrated.

That page is only helpful if you're using InDesign or Acrobat Pro, which allow editing the cover layout dimensions. For the LR Book cover PDF you will need to do this manually based on what you see in the uploaded PDF on Blurb's website. The wider binding when using layflat paper will cause placed photos and text on the cover to shift slightly towards the binding. You can move these placed items slightly in the LR Book module if necessary, upload the revised PDF, and check the preview again on Blub's website. As I mentioned the cover may look fine without any changes depending on your cover layout.

Try uploading your LR Book PDFs at the Blurb 'PDF To Book' link, select the Layflat paper option, and check the cover preview.

 http://www.blurb.com/pdf-to-book

Thanks Todd and Gary for your comments.
I have never sent any of my books to Blurb with PDF uploader, I always [Send to Blurb] from the Lightroom Book module interface. (Does this achieve the same result?)
The fact that Blurb offered (in an email) to print my "Existing Book" as LayFlat led me to believe that it might be possible for a simple option on the Blurb ordering page.
I could not see any reference to Layflat at- http://www.blurb.com/make/pdf_to_book/booksize_calculator#book-attributes
I look forward to Adobe making it a simple option in the Lr Book module.