Aga Ranges Fired Earth Manual De Usuario

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If your tiling is to last, it is essential that

the surface onto which the tiles are to be

laid is sound. Careful consideration must be

given to the floor surface to confirm that

the surface is level, clean, dry, free of dust,

grease and any loose material.

Your tiler must confirm the suitability of

the subfloor before tiling.

When tiling onto a new screed, a minimum

period of one week for each 25mm of new

screed should elapse to allow the screed to

be suitably dry. Further time may be

necessary, depending on weather and site

conditions. We do not recommend tiling

onto anhydrite or fast setting screeds

without careful consideration - please

contact our Technical Department for

further advice.

A new screed may shrink as it dries, and

this may result in cracks across the screed.

If cracking does occur it is likely to appear

across any tiles that are fixed to the screed.

Ensure that the screed is suitably dry and

stable before any tiling is started.

Any movement or day joints in the screed

must be carried through into the tiled

surface. Day joints or construction joints

must not be tiled over without the

inclusion of an expansion joint.

Minor irregularities can be overcome with

up to 5mm of Fired Earth Universal

Levelling Compound* or Fired Earth Thick

Bed Adhesive*. If the floor is very uneven,

with undulations of more than 5mm, Fired

should be used in conjunction with clean

granite chippings.

Suspended timber floors/floating insulated

floors (polystyrene with water resistant

chip board over) should be rigid, non-

flexing and stable enough to bear the

additional load. In order to minimise the

damaging effect of lateral movement in the

floor surface, it is recommended that the

floor is prepared using Fired Earth

Fleximat*. Our Sales Team will be happy to

provide our separate information sheet.

If the suspended timber floor is subject to

vertical movement, the floor must be

stiffened. Remove flexing by fixing a

minimum 18mm, WBP plywood over the

existing timber, screwed down at 150mm

centres. If the floating insulted floor is

subject to vertical movement the floor

must be braced by screwing and gluing

WPB plywood to its surface, or removing

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some of the boards so 'bearers' can be

fitted below to provide further support. 

Seal all the surfaces of the plywood boards

with Fired Earth Universal Bonding Agent*

Fired Earth would recommend that all

existing floor covering and residue adhesive

are removed before tiling. However it is

possible to tile over existing tiles provided

the surface is completely sound, secure and

thoroughly cleaned to remove all

contaminants such as oil, wax and grease,

using an appropriate cleaner.

Cork and woodblock floors must be

removed and any bitumen left on the

subfloor should be scraped away and all

loose material removed. 

Vinyl tiles must be primed with Fired Earth

Prior to fixing tiles, damp of any nature

should be rectified. Consult a specialist if

any doubt exists.

The finished level of an existing floor will

be raised by the maximum thickness of the

tile plus approximately 3–4mm adhesive

bed. Any resultant discrepancy with the

levels of adjoining rooms can be minimised

with the use of threshold/reducer strips.

Fired Earth floor tiles can be used over most

underfloor heating systems. The heating

should be correctly commissioned prior to

tiling and switched off during tiling. There

must be no cracks in the screed otherwise

any floor tiles fitted on top will crack.  

Fired Earth Fleximat* can be used as an 

anti-fracture membrane over Fired Earth

Underfloor Heating. Our Sales Team will 

be happy to provide our separate

information sheet.

Always use flexible adhesive and grout and

provide an expansion gap around all

perimeters and abutments. As a general

guide, do not tile continuously over areas

with a length of over 6 metres, fit an

expansion gap to prevent stress building up 

in the floor. Always fit expansion joints in

doorways of adjoining tiled rooms. 

DO NOT switch the heating on for at least

two weeks after tiling, then, starting from

ambient temperature,  do not increase the

temperature by more than 5°C in a 24 

hour period until the normal working

temperature is reached.

Please refer to our Waterproofing Showers

and Bathrooms Installation Guide for 

further advice.  

When tiling onto walls with floor tiles,

consideration must be given to the weight

of the tile and suitability of the substrate.

Our Sales Team will be happy to confirm the

weight of any of our tiles.