Home/Glossary
Glossary

The terms
we use

A dictionary of the material and the process: what solid surface, ATH, ADC, seamless bonding and the other words on this site and in our documentation actually mean.

Solid surface
A class of cast composite materials, homogeneous through their full thickness, with a non-porous surface and the ability to be bonded seamlessly. Also called cast stone or acrylic stone.
Acrylic solid surface
Solid surface on PMMA acrylic resin with mineral filler. It differs from polyester stone by containing no styrene, holding up under UV and being fully repairable.
Cast stone
A general trade term covering every cast stone-like material: acrylic, polyester and quartz agglomerate alike. The actual composition has to be checked separately.
PMMA
Polymethyl methacrylate, acrylic resin. The binder of acrylic solid surface: it governs translucency of the mass, UV stability and restoration of the surface by sanding.
ATH
Aluminium trihydrate, Al(OH)₃. Mineral filler derived from bauxite: it adds hardness, suppresses combustion and removes fading.
ADC
Adaptive Density Composite — the LISTACRYL line with a density range of 900–1800 kg/m³. Density and thickness are set to the type of part.
ALM
Active lightweight modifier — the ADC component that lowers the density of the mass without sacrificing homogeneity or hygiene.
Seamless bonding
Joining parts with a two-component acrylic adhesive matched to the sheet colour, then sanding the joint flush. The junction stops reading by eye or by hand.
Thermoforming
Heating the sheet until it softens and forming it in a mould. It allows curved fronts, bowls and three-dimensional elements to be made from a flat sheet.
Gelcoat
The decorative surface layer on polyester composite products. Homogeneous acrylic solid surface has none: colour and structure are identical through the thickness.
Styrene
The monomer of polyester resins. It can be emitted under heat and in service. Acrylic formulations do not use it.
Flammability group G2
Classification under GOST 30244: moderately flammable materials. For 12 mm sheet it is confirmed by the fire safety certificate together with groups V2, D2 and T2.
Mohs hardness
A relative mineral hardness scale from 1 to 10. LISTACRYL sheet rates 4, which is typical for acrylic solid surface and means it can be worked with ordinary tooling.
Water absorption
The share of moisture the material takes up over a set time. LISTACRYL sheet absorbs 0.2 %, which means the surface is effectively non-porous.
Thermoformed bowl
A basin or sink drawn from sheet rather than cast separately. It lets the worktop and the bowl be made as one piece with no joint.
Work with us

Request samples
and supply terms

We send sheet samples, the current price list and technical documentation. Expect a reply within one business day.