Hardboard Roof Insulation

I calculate insulation resistance to heat loss or r percentage improvement always as relative to the original number.
Hardboard roof insulation. Eps has the lowest average r value of the three most common types of rigid foam insulation around r 4 per inch. Hardboard high density standard tempered 1 4 thick per inch. Enhance concrete quality improve durability and save money with our range of admixtures or fill and seal gaps with our assortment of mortars from brands such as everbuild and cementone. It also makes roofing easier with physical properties that generate structural rigidity and dimensional stability the wood fiberboard composition of structodek hd possesses natural bonding qualities resulting in superior adhesion capabilities.
Composed of a closed cell polyisocyanurate foam core bonded in the foaming process to 1 2 thick duraboard an expanded perlite mineral aggregate board on one side and a fiber glass reinforced facer on the other. The increase r21 r3 exactly 18 the value by which you are increasing the r value. Structodek hd is not only an integral roofing system component. They keep your home at a comfortable temperature without the need to crank your heat.
It also is the least expensive. Polyisocyanurate is another option coming in as the densest and more expensive option for foam board. Rigid foam insulation also known as insulating boards provide high r values. Rigid roof insulation board.
It s light weight provides ease of handling. Add to list click to add item johns manville fiberglass face polyiso roof decking insulation 4 x 8 to your list. You can even place it under the foundation slab. R3 r18 r21 total roof r value.
Insulating roof deck intermediate and nail base sheathing insulating formboard and sound deadening board are the most recently developed of the products. Select store buy. Eps is suitable for ground contact and can be treated to resist insects. Rigid insulation is one of the best tools to reduce your energy costs.
Eps is the insulation used most widely in insulated concrete forms and structural insulated panels sips. Expanded or styrofoam insulation is a budget friendly option while extruded insulation has great water resistance and is ideal for use in areas like crawl spaces. No more insulation should be installed than can be covered completely with roofing on the same day. Ship to store free.
High density fiberboard roof insulation is a non structural non load bearing material.