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Posted by pipedown on August 5, 2006, 1:37 am
>
>> Martik wrote:
>>> Rough it up will 80 grit sandpaper
>>
>> Is that all it would take, just a liittle roughing up?
>>
>>> If the laminate is not secure it may eventually
>>> pull away from the wall. Are you covering ALL
>>> the laminate?
>>
>> I'm just doing 2 1/2 rows (15") right above the counter top. The
>> formica goes up twice that far thus the reason for not removing the
>> formica. It seems to be well glued to the wall. I tried pulling it at
>> the edge and it seems hard fast. With the tile also having 6
>> receptical covers and 2 electrical switch covers pulling the tile field
>> and the formica against the wall, I don't think it will come undone.
>>
>> Should this 80 grit sanding be done with a sander or is all that is
>> needed is a light hand sanding?
>
> You want to scratch the surface to give the mastic something to bite into,
> maybe drill some 1/8" holes. Glue one tile down and test the strength
> when it dries.
>
Sanding should be sufficient. hand sanding if you feel fit, otherwise a
sander would be OK. looks are not important but don't get carried away and
sand the area not to be tiled. Just need to break the gloss, might not even
be necessary with a good mastic. Sanding will get any remaining grease and
dirt so its worth it from that standpoint.
If the laminate were weak I might suggest some drywall screws sunk flush to
hold it on but it sounds unnecessary in your case where the laminate is
secure, the substrate is solid and the tile is not very heavy.
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