Flat Roof Tapered Insulation Board

Insulfoam i vii ii ix xiv and xv.

Flat roof tapered insulation board.

To drain and insulate dead level roof decks. My roof has a ponding issue my roofer wants to put 1 tapered insulation to correct this problem. Consists of recycled newsprint to provide strength to the board as well as high recycled content. It is designed to enhance water drainage for flat roofs waterproofed with full adhered single ply partially bonded built up felt mastic asphalt and cold liquid applied.

However another roofer advised me not to put tapered insulation. Insulfoam taper is cut from the same high quality eps as our flat insulroof products and meets or exceeds the requirements of astm c578 standard. Factory cut taper that is easy to install and cut builds slope into an otherwise flat roofing system allowing water to drain freely off the roof. Tapered expanded polystyrene eps roof insulation was developed more than 30 years ago with a dual purpose in mind.

High performance tapered insulation for flat roofs kingspan thermataper tt47 is a high performance insulation with a fibre free rigid thermoset polyisocyanurate pir core. Flat tapered eps roofing insulation insulfoam taper is an engineered insulation consisting of a superior closed cell lightweight expanded polystyrene eps. Thus a 0 5 1 5 inch board would cost about 80 85 per 100 sq ft. Energyguard tapered polyiso foam roof insulation.

Tapered flat roof insulation a flat roof should always allow for water channelling and drainage to prevent issues such as ponding. It can also be made using eps rigid or high density styrofoam. We examined the cost analysis of the three standard options in a warm flat roof application across four different case studies of non residential new builds and discovered that using a tapered insulation system to achieve a u value of 0 16 w m k could be up to 43 cheaper than the alternative methods. What is the best way to go because our association cleans and repaints our tile roof 2 times within 6 years.

Standard tapered insulation is typically an iso board with fiberglass mats on both sides. Because this is a specialty product it costs about 60 80 more than a flat foam insulation of the same thickness. Engineering design board layouts are available from your plans and field verified dimensions.