COMMUNITY FORUM

DelawareTodd

05:41AM | 01/14/06
Member Since: 01/13/06
2 lifetime posts
Bvflooring
I am rebuilding a screened porch and turning it into a four season porch/sunroom. The floor is a 4 inch poured concrete slab over an unheated utility room. The house was built in the late fifties and the slab floor has been painted at least once. I can tell you from working in this area that the paint/coating does seem to be well adhered to the concrete. I was going to have a professional install the tile floor but was told that they could not warrant the job based on the fact that the tile would be applied over a painted slab. My question is.......What would be the proper way to proceed?

Thanks.

Todd

Tileguybob

03:42PM | 01/14/06
Member Since: 07/03/05
283 lifetime posts
The tile installer is right. Even though nothing may happen, nobody has a crystal ball and the track record of tile over painted floors is not great so he is basing his decision on historical data.

You could do two things.

1. Check around for some membranes that could be put over the paint. I dont know of any offhand but maybe Noble Company or Schluter which makes Ditra. The tile could then be set to the membrane with thinset.

2.Grind the paint off. Some of the more industrial type rental ceneters will rent you a machine that looks like a floor buffing machine. They will sell you the bricks that mount to the underside and grind away everything, plus make the floor more even by removing any high spots. A shop vac hooks up to the outflow port to gather the unbelievable amount of dust that it will create.

Billhart

05:48PM | 01/14/06
Member Since: 04/25/05
1916 lifetime posts
Protecto wrap makes a peal and stick anti-fracture menbrane that might work.

http://www.protectowrap.com/cat_floor.php

I ran into another company that has a glue down membrane (vs the thinset type). But I forgot the name.

Also you can get the concrete scrafied.

Shot blasting is one process.

Probably done by company that do concrete resurfacing and restoration work.


DelawareTodd

10:52PM | 01/15/06
Member Since: 01/13/06
2 lifetime posts
My understanding is that there may be a problem down the road with the bond between the paint and the concrete. I am considering laying hardie backer board down over the painted concrete and attaching it using mechanical fasteners. How does this approach sound?

Tileguybob

12:44PM | 01/16/06
Member Since: 07/03/05
283 lifetime posts
Not a good idea. The Hardi is designed to be nailed or screwed down over a wood subfloor system. You also put thinset under it to fill in the voids between the wood layer and the cement board. The Hardi gets nailed or screwed at 6" intervals around the perimeter and 8" intervals in the body of the board. Thats a lot of screws ($$$) to set into a concrete floor, about 60+ a board. The thinset under the board is IMPERATIVE and the Tapcons or Walldogs ($$$) must be set so the head is flush with the surface of the board unless you want to pour self leveling cement over the whole floor ($$$). After all that the cost of a grinding machine for the day will be under $200, but you will need help to transport it, they are very heavy.
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

This thin bamboo panel, which appears to float in midair, lets dappled sunlight pass through to the seating area below. Th... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp2