9mm ply

[Eddie]

Im going to be laying travertine onto a bathroom floor. the guy has already bought the ply it's only 9mm. i,ve told him it aint thick enough and i cant guarantee the tiles or grout wont crack, but he is insisting i use it, what would you do?

cheers, Edd

 

[myhometiling]

whats the ply going on top off??

 

[frogeye]

Hi Eddie
so someone is going to the expense of refitting his bathroom with Travertine and hiring a professional tiler - only to ignore advice at the first opportunity? What is the reason for insisting on 9mm - to save money or keep the floor height down? You have options - tell him you can do it, but obtain a signed disclaimer that he ignored advice on the ply thickness - hence no guarantee, walk away ( it only takes one bad job to ruin your reputation), or convince him of the need for at least 15mm (or whatever you insist on). Me? I'd tell him that I wasn't prepared to lower my spec for the job and to find someone else.
Best of luck
frogeye

 

[Saltire69]

You could suggest hardi backerboard if height is an issue. Comes in 6 & 9mm. It's easy to lay as well.

 

[GazLC81]

Wouldn't risk it. It's your rep thats at stake.

If you do go ahead then do as Frogeye says and get him to sign something to say he insisted on the 9mm ply and therefore you can offer no guarantee.

Gaz

 

[iain1979]

explain that the tiles will crack and if he still insists do as above, but h sounds stupid he should listen 2 the pro??

 

[marky]

Hi all am getting a bit confussed with all this ply on t/g flooring if a 2part does the job them why ply.And why so thick up to 15mm it just makes astep in the door way,2part was made for t/g.

 

[GazTech]

Ed...two part flexibl adhesive and grout...is fine directly onto any timber floors....or minimum 18mm plywood wbp,or 10mm backerboard with single or rapid flex still with flexible grout.....Gaz
BAL Fastflex Powder & Liquid

A two part, rapid-setting, sulphate-resistant, water-resistant and frost-resistant floor tile adhesive and isolating, anti-fracture underlay, suitable for use in interior and exterior locations. Suitable for fixing ceramic floor and porcelain tiles and mosaics (including fully vitrified), dark natural stone and slate. Suitable for use on tile backer boards, glazed tiles, concrete bases, cement:sand screeds, tongue & groove floorboarding, plywood overlay, floating plywood/chipboard floors, ceramic/quarry tile/terrazzo/hard natural stone bases, vinyl tiles/sheet, mastic asphalt, steel, glass reinforced polyester (GRP), steel and galvanised steel. Conforms to BS EN 12004, Type C, Class 1F.



HardieBacker™ 1/2'' Cement Board


HardieBacker™ 1/2'' Cement Board for walls and floors delivers superior protection againstured, wallpapered, or tiled. moisture damage and mold growth. Its smooth surface may be painted, text

BAL Rapidset Flexible

A flexible, rapid-setting, non-slip, water-resistant and frost-resistant wall and floor tile adhesive especially suitable for fixing tiles, including fully vitrified and porcelain tiles to low porosity backgrounds and bases. Suitable for use on concrete/brick/block walling, cement:sand rendering, plaster, plasterboard, cement sheets, tile backer boards, concrete bases, cement:sand screeds, plywood overlay, ceramic/quarry tile/terrazzo/hard natural stone, vinyl tiles/sheet, mastic asphalt. BAL Rapidset Flexible white is especially ideal for fixing natural stone, slate, marble (including translucent marble) and travertine. Conforms to BS EN 12004, Type C, Class 2FT.


BAL Wide Joint Grout

A water-resistant, frost-resistant cement-based powder grout designed for grouting ceramic floor tiles, mosaics, quarries etc. Also suitable for use on walls. Not recommended for soft glazed wall tiles, or tiles with metal decor or lustre. Suitable for use in interior and exterior locations in both wet and dry conditions. Suitable for swimming pools. Conforms to BS EN 13888, Type C, Class G1.

NOTE: The physical properties of BAL WIDE JOINT GROUT can be enhanced by the addition of BAL ADMIX GT1. The polymer admixture imparts flexibility, increases adhesion and reduces the water permeability thus widening the application possibilities of the grout, with a classification of BS EN 13888, Type C, Class G2.


BAL Admix GT1

A polymer additive for BAL cement-based grouts. Not for use with adhesives. The addition of BAL ADMIX GT1 greatly improves the physical properties and characteristics of the grout.

• Increased mechanical strength.
• Increased flexural strength and flexibility.
• Reduced water permeability.

 

[Eddie]

So if i use a two part fexi adhesive will that be ok? the prob is that she got the adhesive and gout free because her tiles were three weeks late. Could i put the latex additive into s,p,f rapid white adhesive?

 

[CptPugWash]

bal fast flex issa horrible horrible adhesive :ninja: