Watch as Peter Twining demonstrates his method for protecting the edges of your Thermasheet (or Wedi, Marmox or other similar products).

I highly recommend this for thermasheet boards and shapes.  Once finished this way, you can then mosaic the edges, or paint, according to your preference.

NOTE: Merlin Mosaica sells Cement Based adhesive that you can use for this here: https://merlinmosaica.com/product/merlin-mosaica-cement-adhesive-1-kg/

Free Postage (Australia only) on orders above $250 will NOT apply:

• – If more than one parcel is required.  I will apply Free Shipping to the most expensive (shipping-wise) parcel.  I will bill you for shipping on other parcel(s) in the order.
• – If a Seniors/Pension Discount code is used.  Please consider carefully which option presents the best value to you.

Some errors may occur in shipping calculations, due to the complexities of combining products in one order.  If you have overpaid shipping I will refund, or issue a credit. If you have underpaid, I will invoice for the difference.

I operate this business without assistance.  Whilst I DO endeavour to ship as soon as I possibly can, I cannot guarantee to ship out the same day as the order is received. I am currently shipping orders on Tuesdays, Wednesday and Fridays.

1-10 Silverback mini glass sheets will fit into a STANDARD SMALL post box.
1-5 Hobby Squares will fit into a SMALL glass box.
Larger orders will require one or more LARGE glass boxes.  Express postage on these parcels is dependant on your postcode. Please email me for a quote if required.

I package carefully. However, damage may occur during transit. Product is shipped entirely at your own risk.

International Shipping:

My website does not allow international customers to check out. Please e-mail me a list of the products you want (you can create a wishlist and email it to me), your shipping address and the preferred method of payment. I will prepare a quote and email it to you.  If acceptable, I will send a payment request/invoice. Items will be shipped once payment has cleared.

Apologies – I do NOT ship glass internationally.  Grouts ship to Australia and New Zealand only.

Your understanding is appreciated.

ThermaSheet is easy to use and can be fixed using cement based flexible tile adhesive – solvent based, or ready mixed adhesives MUST NOT be used. ThermaSheet provides a perfect surface on which to apply decorative finishes such as tiles, synthetic renders, decorative plaster etc.

It is light, strong, 100% waterproof and can be cut to any shape with a craft knife. It is inert, and will not warp, shrink or expand over time. Being waterproof it is suitable for exterior as well as interior use. It is virtually identical to wedi or marmox board, which is commonly used as a mosaic substrate in Europe and America. It is designed as a backing board for ceramic tiles in bathrooms, saunas and steamrooms.

Thermasheet has an extruded, polystyrene core and is covered in a fibreglass mesh and polymer-modified cement coating. The glass mesh adds strength and rigidity to the panel. The strength of ThermaSheet is in its complex composite construction. The closed cell structure means it has excellent properties for waterproofing both walls and floors, as well as insulating beneath underfloor heating.
Merlin Mosaica also supplies fixings that include special washers for protecting the surface, allowing bolts to secure D rings for a hanging mechanism. The D rings are rated at 12kgs each, so two of them can support a 24kg mosaic project. Instructions are supplied for attaching the fixings and preparing your board for a mosaic project.

Technical details

Thermasheet is made up of three components: high-density extruded blue polystyrene, fibreglass mesh, and an outer layer of polymerised mortar. It is inherently waterproof. The foam is extruded under enormous pressure, creating a dense mass of tiny, closed cells so tightly packed together that water cannot penetrate the insulation, nor can the insulating air escape from the cells. The foam is then covered with a glass fibre mesh to add strength and rigidity, which in turn is coated with a polymer-modified cement coating. The cement coating allows for adhesion as a bonding surface.