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Posted by Frank Warner on March 22, 2006, 2:39 pm
Looks like we're installing ceramic floor tile in the living room. I've
done plenty of tile work before. Tub surrounds, custom showers, kitchen
counters & backsplashes, but never a floor.
Underlayment is 40-yr-old concrete slab. We're pulling up old linoleum
floor tile squares from the 60s. These were adhered to the slab with
asphalt mastic.
We intend to use thinset to lay the ceramic tiles but don't know if we
should attempt to remove the old asphalt mastic first, down to bare
concrete. This is NOT an easy or non-messy job. Size of the area would
require several gallons high VOC and highly flammable solvent to remove
the asphalt. (I should know. I've done this job before, too.)
Can we apply thinset & tile over the old asphalt mastic?
We appreciate knowledgeable answers from experienced individuals.
-Frank
--
Here's some of my work:
http://www.franksknives.com/
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Posted by troy on March 22, 2006, 3:07 pm
You would need a polymodified thinset.
Your floor would be as strong as the old asphalt mastic.
If you remove to bare concrete, then you would not need the polymodified.
I am a profesionall tile layer, I recommend bare concrete.
> Looks like we're installing ceramic floor tile in the living room. I've
> done plenty of tile work before. Tub surrounds, custom showers, kitchen
> counters & backsplashes, but never a floor.
> Underlayment is 40-yr-old concrete slab. We're pulling up old linoleum
> floor tile squares from the 60s. These were adhered to the slab with
> asphalt mastic.
> We intend to use thinset to lay the ceramic tiles but don't know if we
> should attempt to remove the old asphalt mastic first, down to bare
> concrete. This is NOT an easy or non-messy job. Size of the area would
> require several gallons high VOC and highly flammable solvent to remove
> the asphalt. (I should know. I've done this job before, too.)
> Can we apply thinset & tile over the old asphalt mastic?
> We appreciate knowledgeable answers from experienced individuals.
> -Frank
> --
> Here's some of my work:
> http://www.franksknives.com/
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Posted by Frank Warner on March 22, 2006, 4:26 pm
wrote:
> > Looks like we're installing ceramic floor tile in the living room. I've
> > done plenty of tile work before. Tub surrounds, custom showers, kitchen
> > counters & backsplashes, but never a floor.
> > Underlayment is 40-yr-old concrete slab. We're pulling up old linoleum
> > floor tile squares from the 60s. These were adhered to the slab with
> > asphalt mastic.
> > We intend to use thinset to lay the ceramic tiles but don't know if we
> > should attempt to remove the old asphalt mastic first, down to bare
> > concrete. This is NOT an easy or non-messy job. Size of the area would
> > require several gallons high VOC and highly flammable solvent to remove
> > the asphalt. (I should know. I've done this job before, too.)
> > Can we apply thinset & tile over the old asphalt mastic?
> > We appreciate knowledgeable answers from experienced individuals.
> > -Frank
> You would need a polymodified thinset.
> Your floor would be as strong as the old asphalt mastic.
>
> If you remove to bare concrete, then you would not need the polymodified.
> I am a profesionall tile layer, I recommend bare concrete.
>
Thanks, Troy. That puts a name on what I need to do the job one way.
I saw some stuff at HD today; Jasco Sealer & Adhesive Remover
http://www.jasco-help.com/products/prod_ft.htm#0221-4
that is advertised to remove old mastic. Sure sounds better than a 5
gallon can of lacquer thinner.
Ever used this stuff or similar?
-Frank
--
Here's some of my work:
http://www.franksknives.com/
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Posted by troy on March 22, 2006, 5:50 pm
You will need a good scraper with plenty of blades. Its a lot of work.
I have used jasco and it helps soften up the mastic. Gloves are a must so
you
don't get blisters.
> wrote:
>> > Looks like we're installing ceramic floor tile in the living room. I've
>> > done plenty of tile work before. Tub surrounds, custom showers, kitchen
>> > counters & backsplashes, but never a floor.
>> > Underlayment is 40-yr-old concrete slab. We're pulling up old linoleum
>> > floor tile squares from the 60s. These were adhered to the slab with
>> > asphalt mastic.
>> > We intend to use thinset to lay the ceramic tiles but don't know if we
>> > should attempt to remove the old asphalt mastic first, down to bare
>> > concrete. This is NOT an easy or non-messy job. Size of the area would
>> > require several gallons high VOC and highly flammable solvent to remove
>> > the asphalt. (I should know. I've done this job before, too.)
>> > Can we apply thinset & tile over the old asphalt mastic?
>> > We appreciate knowledgeable answers from experienced individuals.
>> > -Frank
>> You would need a polymodified thinset.
>> Your floor would be as strong as the old asphalt mastic.
>> If you remove to bare concrete, then you would not need the polymodified.
>> I am a profesionall tile layer, I recommend bare concrete.
> Thanks, Troy. That puts a name on what I need to do the job one way.
> I saw some stuff at HD today; Jasco Sealer & Adhesive Remover
> http://www.jasco-help.com/products/prod_ft.htm#0221-4
> that is advertised to remove old mastic. Sure sounds better than a 5
> gallon can of lacquer thinner.
> Ever used this stuff or similar?
> -Frank
> --
> Here's some of my work:
> http://www.franksknives.com/
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Posted by SQLit on March 22, 2006, 7:44 pm
> Looks like we're installing ceramic floor tile in the living room. I've
> done plenty of tile work before. Tub surrounds, custom showers, kitchen
> counters & backsplashes, but never a floor.
> Underlayment is 40-yr-old concrete slab. We're pulling up old linoleum
> floor tile squares from the 60s. These were adhered to the slab with
> asphalt mastic.
> We intend to use thinset to lay the ceramic tiles but don't know if we
> should attempt to remove the old asphalt mastic first, down to bare
> concrete. This is NOT an easy or non-messy job. Size of the area would
> require several gallons high VOC and highly flammable solvent to remove
> the asphalt. (I should know. I've done this job before, too.)
> Can we apply thinset & tile over the old asphalt mastic?
> We appreciate knowledgeable answers from experienced individuals.
> -Frank
> --
> Here's some of my work:
> http://www.franksknives.com/
Every one I know that has tried it with out removing the mastic was LESS
than satisfied.
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> done plenty of tile work before. Tub surrounds, custom showers, kitchen
> counters & backsplashes, but never a floor.
> Underlayment is 40-yr-old concrete slab. We're pulling up old linoleum
> floor tile squares from the 60s. These were adhered to the slab with
> asphalt mastic.
> We intend to use thinset to lay the ceramic tiles but don't know if we
> should attempt to remove the old asphalt mastic first, down to bare
> concrete. This is NOT an easy or non-messy job. Size of the area would
> require several gallons high VOC and highly flammable solvent to remove
> the asphalt. (I should know. I've done this job before, too.)
> Can we apply thinset & tile over the old asphalt mastic?
> We appreciate knowledgeable answers from experienced individuals.
> -Frank
> --
> Here's some of my work:
> http://www.franksknives.com/