Hi LJL,
Articles that claim silica used in mattresses to be a health hazard (your definition of what constitutes a health hazard is completely individual) don’t take into account that there are different types of Silica besides “silica glass” (crystalline) and they don’t pose a respiratory hazard at all in the form they are used in an inherent viscose/silica fire barrier. As the link shows, Crystalline Silica is the form that can cause Silicosis and is both toxic and fibrogenic. Amorphous silica is toxic but not fibrogenic, and silica gel or silicic acid (the form in inherent fire barrier fabrics) is neither toxic or fibrogenic. You can read more about this in post #2 here but I would consider a viscose/silica fire barrier to be a very safe material.
Your question is very broad. I’m guessing you are asking about spraying the product with extra chemicals to meet FR guidelines. That would be a question best addressed to CPR directly, but I don’t believe that they use any chemical treatments to help pass FR.
You can read more about microcoils (or nanocoils) that are used in comfort layers in this article and in post #8 here and post #2 here. They would be a durable choice that can work well for those that prefer the more springy feel of microcoils in the comfort layers of their mattress. The mattress also uses latex, which is a durable material. They don’t provide the complete specifications about the thickness of these layers, or exactly what is used in their quilt, so you’d want to find out that information and make sure it all meets with the mattress durability guidelines I linked to in my earlier reply.
In my previous reply I also commented on not using other people’s reviews (positive or negative) as a manner in determining the value or appropriateness of any mattress and how it might work for you.
The only reliable way to assess the “safety” of different materials in more general terms is based on lab tests and the certifications they have for harmful substances and VOCs (regardless of whether they are organic or natural or synthetic) so that you have some assurance than the VOCs are below the testing limits for the certification. If the materials in a mattress or the mattress itself has a reliable “safety” certification, then for most people they would certainly be “safe enough” … regardless of the type of material or the name of the manufacturer on the label.
There is more information in post #2 here and more about some of the differences between organic and safety certifications in post #2 here and there are also some comments in post #42 here that can help you decide whether an organic certification is important to you for environmental, social, or personal reasons or whether a “safety” certification is enough, if you’re concerned about having certifications for the materials in any mattress.
This seems like that is what they are trying to achieve but they are not completely detailed with their specifications so you’d want to place a phone call with them and discuss this. When you can’t test a mattress in person then the most reliable source of guidance is always a more detailed phone conversation with a knowledgeable and experienced retailer or manufacturer that has your best interests at heart and who can help “talk you through” the specifics of their mattresses and the properties and “feel” of the materials they are using (fast or slow response, resilience, firmness etc.) and the options they have available that may be the best “match” for you based on the information you provide them, any local testing you have done or mattresses you have slept on and liked or other mattresses you are considering that they are familiar with, and the “averages” of other customers that are similar to you. They will know more about “matching” their specific mattress designs, options, and firmness levels to different body types, sleeping positions, and preferences (or to other mattresses that they are familiar with) than anyone else.
You haven’t listed the exact specifications of the model you mentioned, so there’s no way for me to make any objective comments upon that particular mattress in terms of quality of componentry.
While I can certainly help with “how” to choose … It’s not possible to make specific suggestions or recommendations for either a mattress, manufacturers/retailers, or combinations of materials or components because the first “rule” of mattress shopping is to always remember that you are the only one that can feel what you feel on a mattress and there are too many unknowns, variables, and personal preferences involved that are unique to each person to use a formula or for anyone to be able to predict or make a specific suggestion or recommendation about which mattress or combination of materials and components or which type of mattress would be the best “match” for you in terms of “comfort”, firmness, or PPP or how a mattress will “feel” to you or compare to another mattress based on specs (either yours or a mattress), sleeping positions, health conditions, or “theory at a distance” that can possibly be more reliable than your own careful testing (hopefully using the testing guidelines in step 4 of the tutorial) or your own personal sleeping experience (see mattress firmness/comfort levels in post #2 here).
If you want to look online you can use the experience and expertise of the members listed in post #21 here who are all very experienced and knowledgeable and specialize in providing the type of help and guidance on the phone that can help you make good choices, and there are some who have brick and mortar stores in Canada and ship in Canada. I believe that all of them compete well with the best in the industry in terms of their quality, value, service, and transparency. There is also a list of online mattress sources for Canadians in post #21 here.
Phoenix