insulating a ceiling without attic

{"cid":"91191009","title":"Polyethylene Aluminum Foil Foam , Ceiling Heat Insulation With High Efficiency","imgUrl":"https:\/\/img.ismap.com\/nimg\/64\/10\/e597f22276b2b151fe11a1c21dbb-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"TOP","Model Number":"T-H-B-015","Minimum Order Quantity":"1000pcs","Delivery Time":"25 days after receiving payment","Place of Origin":"CHINA","Payment Terms":"L\/C, T\/T","Supply Ability":"500000 sqm\/day","Packaging Details":"po transparent bags","Reflectivity":"96-97%","Roll size":"1.2mx 10m length","Thickness":"15mm","Density":"20-23kg\/m3","Structure":"AL\/EPE\/AL","Feature":"heat insulation,waterproof, fireproof, moisture barrier","Color":"Silver or other colors can be printed","EPE thickness":"15mm","application":"wall,floor,roof, protect packages"}}

{"cid":"91188973","title":"Eco - Friendly Construction Heat Insulation Foam Thermal Insulation Roof Tiles","imgUrl":"https:\/\/img.ismap.com\/nimg\/9e\/d7\/edf48ab6a82704fb4295acba2943-200x200-1.jpg","attrs":{"Price":"$0.26~$3.96\/SQM","Brand Name":"CYG","Model Number":"XPE","Minimum Order Quantity":"3000SQM","Delivery Time":"15~25 work days","Certification":"Reach,ROHS,CE,ISO9001,UL94,IATF16949","Place of Origin":"Guangdong, China (Mainland)","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"500 tons per month","Packaging Details":"pe bags","Plastic Modling Type":"Extruding","Material":"closed cell xlpe foam","Thickness":"0.5-60MM","Width":"1-1.8m","Density":"28-80KG\/Cubic Meter","Certificate":"SGS CE REACH ISO9001","Color":"black foam","Type":"adhesive backed aluminum foil","Selling Units":"Single item","Single gross weight":"1.2 kg","Package Type":"packing as request or common packing with PE bag."}}