SPECIFIC THERMAL RESISTANCE OF VARIOUS MATERIALS
Roberto Escardo May 2003
		Material	Density of Material in kg/m³	Specific Heat	Material Specific Thermal Conductivity	Specific Thermal Resistance  Rm
				Ce=	l =	SI units	B units
				J/kg*K	W/m*K	m*K/W	ft2*h*ºF/BTU*in
		Conversion  factor				1.00	0.1442
	1	Expanded polypropylene	20		0.02	50.00	7.21
	2	Polyurethane (foamed-in-place)			0.02	43.34	6.25
	3	Air, low humidity	1		0,026 - 0,023	40.00	5.77
	4	Autoclaved Aerated Concrete			0.04	27.05	3.90
	5	Rock wool/glass wool	150		0.04	25.00	3.61
	6	Perlite			0,04-0,06	19.28	2.78
	7	Rock wool on expanded metal	200		0.06	16.67	2.40
	8	Wood wool, loose	150		0.06	15.62	2.25
	9	Vermiculite			0,06-0,08	14.77	2.13
	10	Straw or thatch	240		0,07 - 0,08	13.33	1.92
	11	Wood shavings, loosely packed	250		0.08	12.50	1.80
	12	Sawdust, loose	270		0.09	11.76	1.70
DA	13	50/50 sawdust/clay	729	701	0.08	12.34	1.78
	14	Softboard, low density	300		0.10	10.00	1.44
DA	15	Pumice brick	770	835	0.107	9.35	1.35
DA	16	85% vermiculite 15% clay	559	698	0.12	8.33	1.20
DA	17	85% pearlite 15% clay  Fired 1400F	439	921	0.13	7.81	1.13
	18	Plywood, multiplex	530		0,138 - 0,116	8.33	1.20
	19	Medium Density Fibre (MDF)	500-600		0.14	7.14	1.03
	20	Hardboard medium quality, paper	570		0.14	7.14	1.03
DA	21	El Coco Baldosa	1328	835	0.181	5.52	0.80
	22	Wood	817		0,138 - 0,233	4.29	0.62
DA	23	Guatamalan Baldosa	1691	812	0.219	4.57	0.66
	24	Chipwood panels, low density	450		0.25	4.00	0.58
	25	Fibre cement, Eternit	800		0.30	3.33	0.48
	26	Soil-grass (dry 1:1) lime water bonded and compacted	1000		0,35 Estimated	2.86	0.41
	27	Terrazzo floors	1500		0.41	2.44	0.35
	28	Adobe blocks	1100		0.48	2.08	0.30
	29	Water	1000		0.58	1.72	0.25
	30	Soil-cement mortar (10:1)	1400		0.60	1.67	0.24
	31	Cement blocks, solid, low quality	2000		0.65	1.54	0.22
DA	32	Ordinary Brick	1600	840	0.7	1.43	0.21
	33	Soil, not compacted,	1300		0.71	1.41	0.20
	34	Soil-stabilised, compacted, dry	1400		0,75  Estimated	1.33	0.19
	35	Low quality concrete,	2100		1.70	0.56	0.08
	36	Stone, solid granite	2500		2,8-2,9	0.35	0.05
	37	Corrugated metal sheet, steel	7800		50 - 58	0.02	0.00