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
1918 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 garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... 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... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp1