Hi guys and gals, been lurking for a while but now have an issue that can hopefully be resolved by asking a question so heres the first post!

Got a porcelain mosaic to fix to a floor in a wet area. Impey aqua dec is being used to create the falls. Rest of floor area is suspended 22mm boards that arn't T&G, these will be over boarded with 12mm ply. Underfloor heating is also being used.

Adhesive will be either N&C rapidflex or fastflex, (Tanking is the Bal WP1 kit, not the Impey system).

Problem is that the joint in the mosaic mats vary from less then 1mm up to around 10mm. Bal dont make a grout suitable and neither do Ardex or Nicobond so anyone got any suggestions?

Cheers,

Ian

Hi Ian...

Mapei Ultra colour plus...

Fast setting and drying, high performance, anti-efflorescence grout, polymer modified, for joints from 2 to 20 mm. Water-repellent with DropEffect® and antimold with BioBlock® technology.
Applications:
Interior and exterior floor and wall grouting of all types of ceramic tiles (double-fired, single-fired, klinker, porcelain tiles, etc.), terracotta, stone material (natural stone, marble, granite, agglomerates, etc.), glass and marble mosaics. Ensures complete uniformity of colour, does not produce surface efflorescence, dries quickly and therefore floor and wall coverings are ready for use quickly.
BioBlock® technology applied to this product blocks various types of mould from forming and proliferating on the surface of the grout in humid conditions. Also, the use of special hydrophobic additives (DropEffect® technology) gives grouting mortars high water-repellent properties, making them less prone to dirtiness and with excellent durability.
Ideal for grouting exterior façades, balconies, terraces, swimming pools, bathrooms and kitchens. Especially suitable for grouting floors of supermarkets, highway service stations, restaurants, airports and public service grounds.
Technical data:
Pot life: 20-25 minutes.
Waiting time before finishing: 15-30 minutes.
Set to light foot traffic: approx. 3 hours.
Ready for use: after 24 hours (48 hours for basins and swimming pools).
Colours: 26.
Application: MAPEI rubber trowel or squeegee.
Finishing: Mapei sponge or Scotch-Brite® pad.
Storage: 12 months.
Consumption
according to the size of the joint.
Packaging
23 kg bags, 4x5 kg and 9x1 kg boxes according to the colour.

Hi Dave, thanks for that. Joint sizes from 2mm though which is the same as Nicobond. Some of the joints on the mats are just about big enough to slide a fag paper into! Im tempted to get this choice of tile sent back and for the customer to choose from another range.........Never come across this issue before.

The grout will go into a thinner joint.. you might have to just pack it in to make sure.. as long as it is tanked the grout is there for ease of cleaning etc..

Happy days, thanks for the input!

.....And the next question is.....

Mapei suppliers in and around the Southampton/Portsmouth area are...?????

Tile Giant at
UNIT 1, HELLICAL TRADE CENTRE
MILLBROOK ROAD
SOUTHAMPTON
SO15 0LE
Telephone: 023 807 75255

Cheers bud. Looking at your loc I guess you did a web search? What string did you use? I've been pulling a blank regardless of what I googled!!!!

Tile Giant - Ceramic Tile Merchants, they have as store locator.