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Using-polystyrene-as-floor-insulation, you can actually buy polystyrene blocks specifically made for use as loft insulation from at least one of the big diy chains, as well as wall veneer, ceiling tiles and coving out of the stuff so i guess the fire-risk has been reduced to an acceptable level.. Every home needs to be insulated and there are dozens of products on the market, from polystyrene insulation to using recycled denim., polystyrene foam insulation board, also known as eps board, is a white object from polystyrene beads containing a volatile liquid blowing agent after heating advance, heated in the mold and molding.. the eps board provides an r-value of 4 per inch of thickness and is the cheapest type of foam board insulation. eps board is used under roofing, over foundation walls, and beneath the siding..

If your local bco really has just said 75 mm insulation, then that is incomplete info. as you have discovered pir, extruded polystyrene and expanded polystyrene all have different u values., timber-frame floors are typically insulated with polystyrene boards or sheet insulation made from glasswool (fibreglass), wool, polyester, wool/polyester mix, and mineral wool. concrete slab floors are typically insulated with polystyrene board. sections within this page are insulating timber-framed floors, insulating concrete slab floors.

I have a new extension being built. we have 100mm concrete over which we are putting 138mm thickness polystyrene and then 75mm screed. question is i have been recommended the polystyrene by the insulation supplier, it has been delivered but i am not sure it is up to the job. the polystyrene sheets seem rather soft - you can easily push your finger in about 5-10mm., uses. our range of polystyrene comes in a variety of different sizes and can be used for a vast range of different projects. mainly our portfolio of polystyrene sheets can be used for insulation or other construction jobs..

Types of floor insulation. each underfloor insulation material has got its own specific properties and working method. because of this, no single job is the same and you will always have to choose a different insulation material., we own an old victorian cottage that was originally built in 1840 and are having an extension built. it has timber suspended flooring. our builder has quoted for 50mm celotex but i have seen that they are using 50mm polystyrene..

About 10% of heat loss from an average home is through the ground floor. if your floor isn't already insulated, this could be a good move to help you cut your energy bills. not sure whether you ...