TERMOSTYR boards are used for thermal insulation in construction. Among other things, they can be used over old roofing without the need for dismantling. They can be installed directly under roofing with a slope of up to 20%, as an underlayment for roofing felt or concrete screeds, and for other applications for which the declared parameters are appropriate. TERMOSTYR boards are manufactured with a polystyrene core and laminated with a single- or double-sided underlayment on a glass fiber fleece. Board thicknesses range from 50 to 200mm, in 10mm increments. TERMOSTYR boards are manufactured with a polystyrene core in 1x1m and 1x2m boards. Below are the basic performance characteristics for each type.