How to clean cardboard type layer off subfloor

orchidcaFebruary 7, 2009

We have removed the asbestos layers off our 1915 year old fir floor and now have this kind of cardboard looking layer left that is adhered to the fir subloor. Note: we had the floor layers tested and the asbestos culprits was sandwiched between other layers so we are not dealing with asbestos in this final layer.

How do we safely remove it?

I've heard of pouring water on the subfloor to loosen the adhesive, but we don't want to introduce too much water into the insulation below.

Thank you for reporting this comment. Undo
joed

Are you intending to refinsh the fir? Sanding will take the layer off.
If the fir is finished, heat should work by loosening the finish underneath. The finish and the cardboard will come up.

    Bookmark   February 8, 2009 at 9:54AM
Thank you for reporting this comment. Undo
orchidca

We are intending to refinish the floor. The cardboard/adhesive layer is pretty thick. What kind of sander do you recommend? If it's a powerful hand sander, would we run the risk of creating an uneven floor?

The fir is not finished.If we tried heat, what form? Thanks!

    Bookmark   February 8, 2009 at 12:02PM
Thank you for reporting this comment. Undo
Circus Peanut

I got some scary gunk off of my fir subfloor by using the Silent Paint Remover, it's an infrared heater. You hold it over the surface for a number of seconds, and it softens & bubbles up the layer enough to get a nice sharp scraper underneath it to scrape it up. Tedious, but it worked very well without damaging the floor or creating any low spots or dips. I sanded the fir for refinishing afterwards.

The SPR is very pricy at $390, but I was able to resell mine almost at cost -- look on eBay etc for a used one perhaps? And in all honesty, if you have an infrared space heater, I bet it would work just as well. Just exercise caution, as always!

Here is a link that might be useful: Silent Paint Remover

    Bookmark   February 8, 2009 at 1:37PM
Thank you for reporting this comment. Undo
kudzu9

Before you sand, have you had the adhesive under the cardboard layer tested for asbestos?

    Bookmark   February 12, 2009 at 3:52PM
Thank you for reporting this comment. Undo
Billl

Before you break out all the harsh chemicals, you might try some hot water and a little vinegar. You don't have to pour water all of the place - just spray or mop it on and wait for the cardboard to absorb it. Do a little test area and see if it works.

    Bookmark   February 12, 2009 at 4:05PM
Sign Up to comment
More Discussions
Old-Growth Heart pine paneling -- reused as flooring?
Hi, My new 1939 colonial has a family room and foyer...
dyhgarden
White Cedar Shingles: Best price?
Hi all, My wife and I are gearing up to restore the...
dmatlosz
Strip flooring with unusual cross section
(Cross posted from Flooring forum) I'm renovating a...
ferretbee
Radon
Hi. I have never posted in this particular forum before,...
ilovemytrees
interesting plaster job - what to do to fix it?
I'm doing some work in my dining room that includes...
mccb1
Sponsored Products
Leucos | Laguna S105 Platinum Suspension Light
YLighting
Thermostatic Shower System, 12 Round Ceiling Head, Handset & Body Jets
Hudson Reed
Couristan Recife Checkered Field Indoor/Outdoor Area Rug - Natural/Cocoa Multico
$179.00 | Hayneedle
Wall Sconce No. 368-PL by Minka-Lavery
$119.00 | Lumens
Natural Herringbone Jute Rug
$29.99 | zulily
Rustic Detail Framed Canvas Print
Grandin Road
INSPIRE Q Clybourn 18-inch Toss Mocha Wavy Stripe Accent Pillow (Set of 2)
Overstock.com
Echo Chandelier
Lightology
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™