FHB Logo Facebook LinkedIn Email Pinterest Twitter X Instagram Tiktok YouTube Plus Icon Close Icon Navigation Search Icon Navigation Search Icon Arrow Down Icon Video Guide Icon Article Guide Icon Modal Close Icon Guide Search Icon Skip to content
Subscribe
Log In
  • How-To
  • Design
  • Tools & Materials
  • Restoration
  • Videos
  • Blogs
  • Forum
  • Magazine
  • Members
  • FHB House
  • Podcast
Log In

Discussion Forum

Discussion Forum

What is this stuff?

Blojoker | Posted in General Discussion on October 3, 2007 02:15am

I have recently agreed to help my girlfriend remodel an old house in southern Saskatchewan, Canada.  The house was built in 1912, and is structurally very sound.

I have no problems with almost all of the renovations, except one.

in accessing the space between the ceiling and the roof (farm house vaulted style ceiling) I am pelted with small square… well..  stones.  I am assuming that as the old roof was ship-lap, the process of removing old shingles (before my time) sent the grains from the shingles into the space between the roof and the th ceiling, hence when I make a hole, they rain down on me.

Am i to assume I am correct, or is there another possibility that I am unaware of before I rip down the ceiling?

Thanks in advance for your help, I will check often to answer any questions.

 

Reply
  • X
  • facebook
  • linkedin
  • pinterest
  • email
  • add to favorites Log in or Sign up to save your favorite articles

Replies

  1. jet | Oct 03, 2007 02:19am | #1

    Thems be the seeds for prairie oysters.
    I have no idea really but maybe someone will come along and have an answer.
    one canadian to another.......welcome

    "No doubt exists that all women are crazy; it's only a question of degree." - W.C. Fields
  2. vinniegoombatz | Oct 03, 2007 02:30am | #2

     

    Petrified guano    good for the garden

     

    "I'm not responsible for my actions."

     

  3. NatW | Oct 03, 2007 02:32am | #3

    I found glass beads about the size of coarse sand in the rock wool in my attic. Apparently they formed when the molten rock was spun, before glass provided better quality control.

    Doesn't sound like what you have (not square), but maybe this will bump you again.

    Can you post pictures and size reference?

  4. User avater
    Sphere | Oct 03, 2007 03:46am | #4

    Probably Vermiculite or perlite...bad news is SOME once had some asbestos in it..wear a mask. I am not joking.

    Really, I am NOT joking.

    Spheramid Enterprises Architectural Woodworks

    "If you want something you've never had, do something you've never done"

    1. Blojoker | Oct 03, 2007 03:51am | #5

      it is square in shape, about 1/8".  almost looks likes cat litter.... multiple colors per grain... very hard, and very dry....

      sound like what you are talking about?

       Brendon F.4th yr Carpenters ApprenticeMiddle of nowhere

    2. Blojoker | Oct 03, 2007 03:55am | #7

      I checked images of both of your suggestions on google, it does not look like either, it looks much more like glass with ....  color grains?

      make sense?Brendon F.4th yr Carpenters ApprenticeMiddle of nowhere

      1. hvtrimguy | Oct 03, 2007 04:40am | #8

        post a picture if you can"it aint the work I mind,
        It's the feeling of falling further behind."Bozini Latinihttp://www.ingrainedwoodworking.com

        1. Blojoker | Oct 03, 2007 04:48am | #9

          I will as soon as my girlfriend returns home with one.

          Thanks very much guys.Brendon F.4th yr Carpenters ApprenticeMiddle of nowhere"I get paid by the hour, I can do it again"

      2. User avater
        Sphere | Oct 03, 2007 05:16am | #10

        Sounds like vermiculite, perlite is a garden additive and more 'fluffy'.  As I said, SOME issues were found with Asbestos in SOME Vermiculite.

        To be certain beyond a doubt, have it tested.

        Still, wear a mask, dampen any that may become airborne from disturbing it.

        Keep kids away, etc. 

        Google "vermiculite containing asbestos "  Ok, I did, here is a link that may help.

        http://www.ccohs.ca/oshanswers/diseases/vermiculite.html

        Many more links for reading using those key words.Spheramid Enterprises Architectural Woodworks

        "If you want something you've never had, do something you've never done"

        1. splintergroupie | Oct 03, 2007 05:22am | #11

          An average paper mask or filter does not keep asbestos fibers out. That's why those hazmat guys get the big bucks.

          1. User avater
            Sphere | Oct 03, 2007 05:23am | #12

            True that, but I didn't also want to contribute to his death by anxiety...ya know what I mean?Spheramid Enterprises Architectural Woodworks

            "If you want something you've never had, do something you've never done"

          2. splintergroupie | Oct 03, 2007 05:29am | #13

            Except for it being hard, it soundeda lot like Zonolite. I'm curious what it is now. There was a program on public TV recently about the Libby MT vermiculite mine and the attempts by the townspeople to get the place cleaned up via Superfund money and how the Rep. Governor stonewalled the designation. A WR Grace offical came to answer questions. Talk about sending a sacrificial lamb...he looked clueless, but guilty.

          3. User avater
            Sphere | Oct 03, 2007 06:14am | #16

            There's enough stuff out there that it could be, but better safe than dead is my motto.

            I know you have vast exp. in many fronts on this subject, I relinquish the reins to thou.Spheramid Enterprises Architectural Woodworks

            "If you want something you've never had, do something you've never done"

          4. Blojoker | Oct 03, 2007 05:30am | #14

            lol, thanks.

            I will be careful, I have worked in asbestos (loose fill) before, and have the gear.

             

            Will post pic in about 1 hr from now.

            thanks.

             Brendon F.4th yr Carpenters ApprenticeMiddle of nowhere"I get paid by the hour, I can do it again"

          5. User avater
            Sphere | Oct 03, 2007 06:12am | #15

            I'll look in in the A.M.  Hittin the sack.Spheramid Enterprises Architectural Woodworks

            "If you want something you've never had, do something you've never done"

          6. Danno | Oct 03, 2007 02:22pm | #17

            I agree with Sphere--vermiculite or similar granular insulation. The grains do look like shiny cat litter and light weight. One house we had to go up into the attic had it--we also remodeled a couple baths and every hole we cut into the ceiling caused a rain of that stuff. Recently put a ceiling fan in an old house--same thing. It will also get ground into floors and scratch them (nice oak floors). I kept sweeping it up because the guy I worked with would just walk on it and grind it in. He stood on the bed to work--did cover most of the bed with a drop cloth first.

  5. User avater
    BarryE | Oct 03, 2007 03:52am | #6

    Does it look like this?:

    http://www.epa.gov/asbestos/pubs/insulation.html


    Barry E-Remodeler

     

Log in or create an account to post a comment.

Sign up Log in

Become a member and get full access to FineHomebuilding.com

Video Shorts

Categories

  • Business
  • Code Questions
  • Construction Techniques
  • Energy, Heating & Insulation
  • General Discussion
  • Help/Work Wanted
  • Photo Gallery
  • Reader Classified
  • Tools for Home Building

Discussion Forum

Recent Posts and Replies

  • |
  • |
  • |
  • |
  • |
  • |
View More Create Post

Up Next

Video Shorts

Featured Story

Picture-Perfect Pergola

Built from locally sawn hemlock, this functional outdoor feature uses structural screws and metal connectors for fast, sturdy construction.

Featured Video

SawStop's Portable Tablesaw is Bigger and Better Than Before

The 10-in. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws.

Related Stories

  • Design and Build a Pergola
  • Podcast Episode 689: Basement Garages, Compact ERVs, and Safer Paint Stripper
  • FHB Podcast Segment: Are Single-Room ERVs the Answer?
  • Fire-Resistant Landscaping and Home Design Details

Highlights

Fine Homebuilding All Access
Fine Homebuilding Podcast
Tool Tech
Plus, get an extra 20% off with code GIFT20

"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Fine Homebuilding Magazine

  • Issue 332 - July 2025
    • Custom Built-ins With Job-Site Tools
    • Fight House Fires Through Design
    • Making the Move to Multifamily
  • Issue 331 - June 2025
    • A More Resilient Roof
    • Tool Test: You Need a Drywall Sander
    • Ducted vs. Ductless Heat Pumps
  • Issue 330 - April/May 2025
    • Deck Details for Durability
    • FAQs on HPWHs
    • 10 Tips for a Long-Lasting Paint Job
  • Issue 329 - Feb/Mar 2025
    • Smart Foundation for a Small Addition
    • A Kominka Comes West
    • Making Small Kitchens Work
  • Issue 328 - Dec/Jan 2024
    • How a Pro Replaces Columns
    • Passive House 3.0
    • Tool Test: Compact Line Lasers

Fine Home Building

Newsletter Sign-up

  • Fine Homebuilding

    Home building tips, offers, and expert advice in your inbox.

  • Green Building Advisor

    Building science and energy efficiency advice, plus special offers, in your inbox.

  • Old House Journal

    Repair, renovation, and restoration tips, plus special offers, in your inbox.

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters

Follow

  • Fine Homebuilding

    Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

    Start Free Trial Now
    • Facebook
    • Instagram
    • X
    • LinkedIn
  • GBA Prime

    Get instant access to the latest developments in green building, research, and reports from the field.

    Start Free Trial Now
    • Facebook
    • YouTube
  • Old House Journal

    Learn how to restore, repair, update, and decorate your home.

    Subscribe Now
    • Facebook
    • Instagram
    • X
  • Fine Homebuilding

    Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

    Start Free Trial Now
    • Facebook
    • Instagram
    • X
    • LinkedIn
  • GBA Prime

    Get instant access to the latest developments in green building, research, and reports from the field.

    Start Free Trial Now
    • Facebook
    • YouTube
  • Old House Journal

    Learn how to restore, repair, update, and decorate your home.

    Subscribe Now
    • Facebook
    • Instagram
    • X

Membership & Magazine

  • Online Archive
  • Start Free Trial
  • Magazine Subscription
  • Magazine Renewal
  • Gift a Subscription
  • Customer Support
  • Privacy Preferences
  • About
  • Contact
  • Advertise
  • Careers
  • Terms of Use
  • Site Map
  • Do not sell or share my information
  • Privacy Policy
  • Accessibility
  • California Privacy Rights

© 2025 Active Interest Media. All rights reserved.

Fine Homebuilding receives a commission for items purchased through links on this site, including Amazon Associates and other affiliate advertising programs.

  • Home Group
  • Antique Trader
  • Arts & Crafts Homes
  • Bank Note Reporter
  • Cabin Life
  • Cuisine at Home
  • Fine Gardening
  • Fine Woodworking
  • Green Building Advisor
  • Garden Gate
  • Horticulture
  • Keep Craft Alive
  • Log Home Living
  • Military Trader/Vehicles
  • Numismatic News
  • Numismaster
  • Old Cars Weekly
  • Old House Journal
  • Period Homes
  • Popular Woodworking
  • Script
  • ShopNotes
  • Sports Collectors Digest
  • Threads
  • Timber Home Living
  • Traditional Building
  • Woodsmith
  • World Coin News
  • Writer's Digest
Active Interest Media logo
X
X
This is a dialog window which overlays the main content of the page. The modal window is a 'site map' of the most critical areas of the site. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page.

Main Menu

  • How-To
  • Design
  • Tools & Materials
  • Video
  • Blogs
  • Forum
  • Project Guides
  • Reader Projects
  • Magazine
  • Members
  • FHB House

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Popular Topics

  • Kitchens
  • Business
  • Bedrooms
  • Roofs
  • Architecture and Design
  • Green Building
  • Decks
  • Framing
  • Safety
  • Remodeling
  • Bathrooms
  • Windows
  • Tilework
  • Ceilings
  • HVAC

Magazine

  • Current Issue
  • Past Issues
  • Magazine Index
  • Subscribe
  • Online Archive
  • Author Guidelines

All Access

  • Member Home
  • Start Free Trial
  • Gift Membership

Online Learning

  • Courses
  • Project Guides
  • Reader Projects
  • Podcast

More

  • FHB Ambassadors
  • FHB House
  • Customer Support

Account

  • Log In
  • Join

Newsletter

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Follow

  • X
  • YouTube
  • instagram
  • facebook
  • pinterest
  • Tiktok

Join All Access

Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.

Start Your Free Trial

Subscribe

FHB Magazine

Start your subscription today and save up to 70%

Subscribe

Enjoy unlimited access to Fine Homebuilding. Join Now

Already a member? Log in

We hope you’ve enjoyed your free articles. To keep reading, become a member today.

Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine.

Start your FREE trial

Already a member? Log in

Privacy Policy Update

We use cookies, pixels, script and other tracking technologies to analyze and improve our service, to improve and personalize content, and for advertising to you. We also share information about your use of our site with third-party social media, advertising and analytics partners. You can view our Privacy Policy here and our Terms of Use here.

Cookies

Analytics

These cookies help us track site metrics to improve our sites and provide a better user experience.

Advertising/Social Media

These cookies are used to serve advertisements aligned with your interests.

Essential

These cookies are required to provide basic functions like page navigation and access to secure areas of the website.

Delete My Data

Delete all cookies and associated data