Insulation and cover boards play an important role in the performance of bituminous roofing systems, contributing to thermal efficiency while providing a suitable substrate for the waterproofing layer. Sika's range of insulation boards includes Sikatherm® PIR and Sikatherm® mineral wool insulation boards designed for use in bitumen roof systems. The range includes glass tissue-faced PIR boards offering low thermal conductivity, high compressive strength and lightweight handling, bitumen-surfaced PIR boards designed for compatibility with bituminous roofing systems, and dual-density mineral wool boards that provide excellent fire performance, sound reduction properties and support for adhered roof build-ups.

Our Range of Insulation & Cover Boards for Bitumen Roofs

Sikatherm® PIR GT

PIR glass tissue faced thermal insulation board
Sikatherm® PIR BN RK1

BITUMEN COATED GLASS TISSUE FACED PIR THERMAL INSULATION BOARD
Sikatherm® MW DD

MINERAL WOOL THERMAL INSULATION BOARD
DensDeck® Prime Roof Board

Coated glass mat gypsum roof board

Discover More Bitumen Roof Accessories

Construction workers installing commercial flat roof membrane

Bitumen Vapour Control Layers

VCLs designed to help manage moisture movement within bituminous roof build-ups and support roof performance.
Close up view of bitumen membrane applied on roof at parapet

Walkways

Bituminous walkway pads to protect bitumen roof membranes from regular foot traffic.
Construction workers applying waterproof membrane on roof

Bitumen Primers

Primers for preparing roof substrates and promoting adhesion between bituminous membranes and the roof deck.
Flat roof drain with waterproof membrane

Drainage Units

Preformed rainwater outlets, leaf guards and drainage accessories to simplify detailing and support effective drainage.
Worker heat welding textured flooring sheet

Solar & Lightning Protection Accessories

Components designed to seamlessly integrate lightning protection and solar mounted systems on bitumen roof decks.