--- title: FAQs - Blue60 description: Find answers to common questions about Blue60 fire-rated foam, packers, and wedges. Visit our FAQs page today for expert guidance and product support. --- [+441905674210](tel:+441905674210) [![Blue60 Logo](https://www.blue-60.co.uk/hs-fs/hubfs/Blue60%20Logo.png?width=150&height=43&name=Blue60%20Logo.png "Blue60 Logo")](https://www.blue-60.co.uk/) [![logoMain](https://www.blue-60.co.uk/hs-fs/hubfs/logoMain.png?width=191&height=90&name=logoMain.png "logoMain")](https://www.blue-60.co.uk/) - Our Products - [Fire Rated Frame Foam](https://www.blue-60.co.uk/fire-rated-frame-foam) - [Traditional Fire Rated Packers](https://www.blue-60.co.uk/fire-rated-packers) - [Timberex Wedges](https://www.blue-60.co.uk/hardwood-packers-for-fire-doors) - [Why Use Blue60](https://www.blue-60.co.uk/passive-fire-protection-products-blue60) - [Distributors](https://www.blue-60.co.uk/fire-proof-expanding-foam-distributors) - Resources - [Our Story](https://www.blue-60.co.uk/blue60-story-fire-protection-experts) - [Free Downloads](https://www.blue-60.co.uk/free-downloads) - [Blog](https://www.blue-60.co.uk/blog) - [FAQs](https://www.blue-60.co.uk/faqs) - [Contact Us](https://www.blue-60.co.uk/contact-us) More results [Free Downloads](https://www.blue-60.co.uk/free-downloads) [Free Downloads](https://www.blue-60.co.uk/free-downloads) [Free Downloads](https://www.blue-60.co.uk/free-downloads) - Our Products - [Fire Rated Frame Foam](https://www.blue-60.co.uk/fire-rated-frame-foam) - [Traditional Fire Rated Packers](https://www.blue-60.co.uk/fire-rated-packers) - [Timberex Wedges](https://www.blue-60.co.uk/hardwood-packers-for-fire-doors) - [Why Use Blue60](https://www.blue-60.co.uk/passive-fire-protection-products-blue60) - [Distributors](https://www.blue-60.co.uk/fire-proof-expanding-foam-distributors) - Resources - [Our Story](https://www.blue-60.co.uk/blue60-story-fire-protection-experts) - [Free Downloads](https://www.blue-60.co.uk/free-downloads) - [Blog](https://www.blue-60.co.uk/blog) - [FAQs](https://www.blue-60.co.uk/faqs) - [Contact Us](https://www.blue-60.co.uk/contact-us) [Make An Enquiry](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLK4UhAq1towdm37kbWCT8mmCcVle%2FPNLdWXr7PWmszFxR%2Bg9DD3wFS5mpXW6iorYSOWf4PQjwH0USWTHqiKpcCxMJ2yZCG1bSNmsrA4TSaG887v03oQwhV52e10ighyxxTfrFRsNGBfa6BEM%2Bk9NVL9tKm1whakst4wJOrOQAosqRVmn21puHggvuw%3D&portalId=145879858) [+441905674210](tel:+441905674210) [enquiries@blue-60.co.uk](mailto:enquiries@blue-60.co.uk) # FAQs [Make An Enquiry](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLK4UhAq1towdm37kbWCT8mmCcVle%2FPNLdWXr7PWmszFxR%2Bg9DD3wFS5mpXW6iorYSOWf4PQjwH0USWTHqiKpcCxMJ2yZCG1bSNmsrA4TSaG887v03oQwhV52e10ighyxxTfrFRsNGBfa6BEM%2Bk9NVL9tKm1whakst4wJOrOQAosqRVmn21puHggvuw%3D&portalId=145879858) ## EVERYTHING YOU NEED TO KNOW What fire rating does Blue60™ offer? Blue60™ has been fire tested to 30 & 60 minutes (BS476 Pt20/22: 1987 & BS EN1634-1) in timber doorsets Why is Blue60™ blue? Our foam is coloured blue to make it easily identifiable and to differentiate from other fire foams on the market What is the minimum and maximum gaps Blue60™ can be used? The minimum practical / tested width is 3mm and maximum tested gap is 39mm Do you have to install Blue60™ with specialist packers or fixings? Blue60™ has been tested as a system with Blue60 fire rated packer and with timber packers and standard screw fixings Do I need to cap off Blue60™ with intumescent mastic? There is no need to cap with mastic for fire ratings of up to 60 minutes Can I add architraves over Blue60™? Architraves are optional, Blue60™ Foam has been tested with and without Does Blue60™ foam have a shelf life? Unlike other Fire Foams Blue60™ has a 24-month shelf life whilst stored in temperate conditions (5°C \> 30°C). Blue60™ has also been tested when applied 24 months after manufacture with the same perfect results Where can I find technical and health & safety information?  All relevant information can be downloaded on our website: www.blue-60.co.uk How many doors can I seal per can? A 750ml can will seal 3-4 standard single doors with a max 10mm x 70mm gap or 2-3 with a 10mm x 100mm gap Does Blue60™ have an acoustic rating? Yes, Blue60™ sound reduction capabilities of up to 45 dB Rw Can I use Blue60™ when door sets are required to have smoke control? Blue60™ has smoke leakage evidence to BS EN 1634-3: 2004 What fire rating does Blue60™ offer? It saves time and money against traditional methods like mineral wool & mastic and most importantly is the most widely tested system on the market for fire stopping around a fire door frame Is Blue60™ approved for use by the NHBC and similar bodies? Yes My customer is insisting that I cap the Blue60 with a mastic what can I use? Blue60™ has been tested with Orange240™ mastic being used to over gap the  Blue60™, cutting back the  Blue60™ 10mm deep and filling the gap with Orange240™ The structural opening is running out, only leaving a 2mm gap at the bottom of the frame. How do I work with this? Use  Blue60™ in the normal way, down to the point where the gap goes below 3mm and it becomes impossible to get a foam nozzle into the gap and guarantee the gap is fully filled, then fully fill the remaining gap with Orange240™. This method has been fully tested  ## NEED GUIDANCE ON FIRE PROTECTION? Our team of experts is here to help. Whether you have questions about our products, installation or compliance, we’ll provide clear, reliable advice tailored to your project. Fill in the form and one of our specialists will get back to you shortly. --- #### ![logoMain](https://www.blue-60.co.uk/hs-fs/hubfs/logoMain.png?width=158&height=74&name=logoMain.png) Blue60 is a specially formulated expanding foam that, when used with Blue60 fire-rated packers, provides up to 60 minutes of fire protection for timber doorsets — with no need for additional mastics or sealants. [mailto:enquiries@blue-60.co.uk](mailto:enquiries@blue-60.co.uk) [Join us on Slack](tel:+441905674210) [Join us on Linkedin](https://www.linkedin.com/company/blue60-foam-and-packers-systems/) [Join us on X](http://x.com/blue60fire) Products - [Fire Rated Frame Foam](https://www.blue-60.co.uk/fire-rated-frame-foam) - [Traditional Packers](https://www.blue-60.co.uk/fire-rated-packers) - [Timberex Wedges](https://www.blue-60.co.uk/hardwood-packers-for-fire-doors) About - [Why Use Blue60](https://www.blue-60.co.uk/passive-fire-protection-products-blue60) - [Our Story](https://www.blue-60.co.uk/blue60-story-fire-protection-experts) - [Distributors](https://www.blue-60.co.uk/fire-proof-expanding-foam-distributors) Resources - [Blog](https://www.blue-60.co.uk/blog) - [Free Downloads](https://www.blue-60.co.uk/free-downloads) - [FAQs](https://www.blue-60.co.uk/faqs) - [Contact Us](https://www.blue-60.co.uk/contact-us) Copyright © 2026 Blue60      VAT Number: GB266839651  |  Company Number: 10671733 - [Terms & Conditions](https://www.blue-60.co.uk/terms-and-conditions) - [Cookies](https://www.blue-60.co.uk/cookie-policy) - [Privacy](https://www.blue-60.co.uk/privacy-policy) ```json { "@context" : "https://schema.org", "@type" : "Organization", "alternateName" : "Blue60", "contactPoint" : { "@type" : "ContactPoint", "areaServed" : "GB", "availableLanguage" : "en", "contactType" : "customer service", "telephone" : "01905 673171" }, "logo" : "https://www.blue-60.co.uk/hs-fs/hubfs/logoMain.png?width=191&height=90&name=logoMain.png", "name" : "Blue60", "sameAs" : [ "https://x.com/blue60fire", "https://www.youtube.com/@Blue-dw1kt" ], "url" : "https://www.blue-60.co.uk/" } ``` ```json { "@context" : "https://schema.org", "@type" : "FAQPage", "mainEntity" : [ { "@type" : "Question", "acceptedAnswer" : { "@type" : "Answer", "text" : "Blue60™ has been fire tested to 30 & 60 minutes (BS476 Pt20/22: 1987 & BS EN1634-1) in timber doorsets" }, "name" : "What fire rating does Blue60™ offer?" }, { "@type" : "Question", "acceptedAnswer" : { "@type" : "Answer", "text" : "Our foam is coloured blue to make it easily identifiable and to differentiate from other fire foams on the market" }, "name" : "Why is Blue60™ blue?" }, { "@type" : "Question", "acceptedAnswer" : { "@type" : "Answer", "text" : "The minimum practical / tested width is 3mm and maximum tested gap is 39mm" }, "name" : "What is the minimum and maximum gaps Blue60™ can be used?" }, { "@type" : "Question", "acceptedAnswer" : { "@type" : "Answer", "text" : "Blue60™ has been tested as a system with Blue60 fire rated packer and with timber packers and standard screw fixings" }, "name" : "Do you have to install Blue60™ with specialist packers or fixings?" }, { "@type" : "Question", "acceptedAnswer" : { "@type" : "Answer", "text" : "There is no need to cap with mastic for fire ratings of up to 60 minutes" }, "name" : "Do I need to cap off Blue60™ with intumescent mastic?" }, { "@type" : "Question", "acceptedAnswer" : { "@type" : "Answer", "text" : "Architraves are optional, Blue60™ Foam has been tested with and without" }, "name" : "Can I add architraves over Blue60™?" }, { "@type" : "Question", "acceptedAnswer" : { "@type" : "Answer", "text" : "Unlike other Fire Foams Blue60™ has a 24-month shelf life whilst stored in temperate conditions (5°C > 30°C). 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