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Fastwarm® Underfloor Heating Insulation Technical Information

Comparison of popular construction boards

Properties	Marmox	Wedi	Aquapanel Thermal	Fastwarm®-Xtra
Thermal Conductivity (W/mK)	0.027	0.033	0.027	0.029
Compressive Strength (kPa)	300	250	220	300
Water Absorption (Capillarity)	Nil	Nil	Nil	Nil

Comparison of popular thermal insulation boards

Properties	Celotex GA3000Z	Kingspan TF70	FloorTherm	Fastwarm®
Thermal Conductivity (W/mK)	0.023	0.023	0.023	0.027
Compressive Strength (kPa)	120	140	150	300
Water Absorption (Capillarity)	Nil	Nil	Nil	Nil

Technical data for different depths

Fastwarm®-Xtra Board Sizes	Thermal Conductivity (W/mK) 90 days @ 10°C	Resistance (K-Value m²)	U-Value (W/m²K)	Compressive Strength (kPa) 1 kPa = 1 kg/cm²	Weight (kgs)
1250 x 600 x 6mm	0.029	0.20	4.80	300	1.6
1250 x 600 x 10mm	0.029	0.34	2.90	300	1.8
Standard	ISO 8301/BS EN 12667			BS EN 826

Fastwarm® Board Sizes	Thermal Conductivity (W/mK) 90 days @ 10°C	Resistance (K-Value m²)	U-Value (W/m²K)	Compressive Strength (kPa) 1 kPa = 1 kg/cm²	Weight (kgs)
1200 x 600 x 6mm	0.027	0.22	4.50	300	0.13
1200 x 600 x 10mm	0.027	0.37	2.70	300	0.22
1250 x 600 x 20mm	0.029	0.69	1.45	280	0.45
1250 x 600 x 30mm	0.029	1.03	0.97	280	0.68
1250 x 600 x 40mm	0.029	1.38	0.72	280	0.90
1250 x 600 x 50mm	0.029	1.72	0.58	280	1.13
1250 x 600 x 60mm	0.029	2.07	0.48	280	1.35
1250 x 600 x 80mm	0.029	2.76	0.36	280	1.80
Standard	ISO 8301/BS EN 12667			BS EN 826

Thermal energy moves from a higher temperature to a lower one, the bigger the difference the faster the transfer.

Thermal Conductivity	Measure of the rate at which material will pass heat energy, expressed in units of watts per square metre per degree Celsius of temperature difference (W/mK).
Resistance	Each type of material has it's own particular rate of thermal conductivity affecting the speed of thermal transfer (K-Value)
U Value	Measure of how much heat energy will pass through a square metre of structure when air temperatures on either side differ by one degree Celsius. The fabric of any building will typically consists of a number of components each with their characteristic resistance value, the U-Value is a combination of all these values. U-Values are expressed in units of watts per square metre per degree of temperature difference (W/m²K)

Fastwarm® technical data sheet

Properties	Standard	Unit	Data
Density	EN 1602	Kg/m²	28
Thermal conductivity, 90 days, 10ºC	ISO 8301	W/mK	0.027
Compressive strength at 10% deflection or yield, (vertical)	EN 826	kPa	300
Compressive modulus	EN 826	kN/m²	12-20,000
Tensile strength	EN 1607	kPa	500
Tensile modulus	EN 1607	kPa	12-20,000
Shear strength	EN 1209	kPa	250
Shear modulus	EN 1209	kPa	8,000
Design compressive stress, <2% compression	EN 1606	kN/m²	110
Water vapour resistivity	EN 12086	(Uu)- value	100-160
Water absorption by immersion (28 days, full boards)	DIN 53434	Vol-%	0.5
Capillarity	-	nil	nil
Coefficient of linear thermal expansion	BS 3837: Method 13	mm/mK	0.07
Temperature limits	-	°C	-50/+75
Fire classification	Bs 3837: Pt2: 1990	-	-
Edge profile	-	-	butt
Surface finish	-	-	planed

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