johnnypcrystal, can you please update? Have you had any success with Allstate?
I have the Atlas Alpine on my roof which has also been discontinued like the Chalet. I have filed 2 claims over the past 3 years. Both times they told me to repair it with the estimated cost below the deductible. They have also told me that it is Allstate's policy to repair not replace. I had a roofer meet with the adjuster for the 2nd claim and they asked him to do a brittle test. He refused. I have until June 2017 to convince Allstate that my roof needs to be replaced. At the beginning of June it will have been 2 years since the claim and then I can not file suit/negotiate with Allstate.
I have letters from Atlas if anyone wants them for the Atlas Chalet and Atlas Alpine that state essentially that the manufacturer does not approve repairs for those shingles since there is no comparable shingle on the market that matches those dimensions. They will void warranty for all remaining shingles after storm damage and repairs. Referring to IRC code, chapter 9 for roofs, it states repeatedly that manufacturer guidelines/instructions should be followed. Allstate is violating building code.
I have finally negotiated for a half roof replacement but they want me to remove shingles from the replaced slope and use those to replace the damaged shingles on other slopes. Once you remove a shingle it is damaged because of the nail holes which will then double upon reinstallation; the area of the shingle will be reduced and thus weakened; the water tight seal will have been broken; and not to mention creases, cracks, and other damage that may be internal and not visible to the eye. Allstate and says that they do not cover poor workmanship or damaged/faulty material. So, if I do what they are asking and get hit with more storm damage, file another claim...you guessed it...it's not insured. Allstate commits fraud on so many levels.
Also, I was able to negotiate with Allstate to replace half the roof by siting the case tried in the Georgia Supreme Court, Mabry vs. State Farm. It has to do with devaluation of property (auto or home). Essentially it states that in terms of replacing with "like kind or like quality" does refer to matching. The property needs to be restored to its former state before the damage occurred. If you can tell that a repair has been made, then the property has been devalued. Or even if it is not obvious that the damage ever occurred, the fact that auto was involved in an accident still devalues a vehicle. So, if the warranty for the remaining shingles has been voided, the home has been devalued. Allstate by law is responsible to replace the roof.
Hope this helps some one....