Cable & Membrane Comparison
Product Name
Indoor Use Only
YES
NO, need approval for outdoor
YES
Online Estimator Tool
NO
120V Sizes - designed at approx. 12 w/sqft
8, 12, 15, 25, 30, 40, 50, 60, 70, 80, 85, 95, 110, 120 (sqft)
11, 16, 21, 27, 32, 38, 43, 51, 64, 73, 83, 92, 102, 113, 134 (sqft)
10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100 (sqft)
no guides or straps provided
240V Sizes - designed at approx. 12 w/sqft
15, 20, 25, 35, 45, 55, 65, 70, 85, 90, 100, 120, 135, 145, 160, 170, 190, 215, 240 (sqft)
11, 16, 21, 27, 32, 38, 43, 53, 64, 75, 85, 103, 129, 145, 167, 183, 204, 225 (sqft)
20, 30, 40, 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200 (sqft)
no guides or straps provided
Max Heat Output
15 watts/sqft
15.2 watts/sqft
14.4 watts/sqft
Cable Spacing w/guides
Unknown
12 w/sqft - 3”
15 w/sqft - 3”/2”/3” alternate
N/A
N/A
N/A
10.3 w/sqft - 3.5”
12 w/sqft - 3”
14.3 w/sqft - 2.5”
Cable Spacing w/membrane
10 w/sqft - 3 pillar
12 w/sqft - 3/2/3 alternate pillar
15 w/sqft - 2 pillar
Unknown
12.7 w/sqft - 3 pillar
15.2 w/sqft - 3/2/3 alternate pillar
10.6 w/sqft - 3/4/3 alternate shape
12.3 w/sqft - 3 shape
14.3 w/sqft - 3/2/3 alternate shape
Cable Guides/Straps Included
YES
NO
YES
Self-Leveling Concrete Using Cable Guides
Recommended
N/A
Recommended, or thicker mortar bed
Cable Thickness
3/16”
Unknown
Unknown
Zero EMF
YES
stated as “virtually zero EMF”
< 1 milligauss
Waterproof Cable
YES
No, extra waterproofing layer required
YES
Halfway Marker on Cable
YES
NO
NO
Cable Repair Kit Available
YES
YES
YES
Cable Must be Turned After 10’
No; Unlimited Straight Runs
YES
No; Unlimited Straight Runs
Cold Lead Length
10’
7’
10’
Cable Splice and Sensor Probe Fits without Cutting Membrane
YES
NO
NO
Membrane Rolls Sizes
54 sqft & 161 sqft
134.5 sqft
40 sqft & 161 sqft
Membrane Sheet Sizes
10.6 sqft - 3’3”x3’3”
8.4 sqft - 3’ 2-5/8” x 2’ 7-3/8”
10 sqft - 3.13’ L x 3.28’ W
Membrane Thickness
.22” - 5.5mm
.25” - 5.5mm
.24” - 6mm
Adjusted Floor Height
Cable w/guides - 1/4”
Cable w/membrane - 1/2”
N/A
Cable w/membrane - 1/2”
Cable w/straps - 1/4”
Cable w/membrane - 1/2”
Waterproof Membrane
YES
YES
YES
Self-Leveling Concrete over Membrane
Yes, only approved brands
NO
Unknown
Modified Thin-set Approved Above and Below Membrane
Only Schluter thin-sets are approved over membrane to obtain the warranty
Yes, refer to thin-set & tile manufacturer
Minimum Tile Size Over Membrane
No minimum with use of self-leveler; 2”x2” over thin-set
2”x2” over thin-set
2”x2” over thin-set
UL Approved under Laminate
YES
YES
YES
UL Approved under Luxury Vinyl Tile
YES
YES
YES
UL Approved under Engineered Hardwood
YES
YES
YES
Membrane - Robinson Floor Test - OSB - 19.2” O.C - 12”x12” Porcelain
5/5 - Extra Heavy
DITRA-HEAT - 5/5 - Extra Heavy
DITRA-HEAT-DUO - 2/5 - Light
(16” O.C) - 2/5 - Light
Membrane - Robinson Floor Test - OSB - 24” O.C - 12”x12” Marble
DITRA-HEAT - 2/5 - Light
DITRA-HEAT-DUO - Unknown
Membrane - Robinson Floor Test - Concrete - 12”x12” Porcelain
5/5 - Extra Heavy
DITRA-HEAT - 3/5 - Moderate
DITRA-HEAT-DUO - 2/5 - Light
Membrane - Robinson Floor Test - Concrete - 2”x2” Porcelain
DITRA-HEAT - 2/5 - Light
DITRA-HEAT-DUO - 1/5 - Residential
Membrane - Robinson Floor Test - Concrete - 12”x12” Marble
DITRA-HEAT - Unknown
DITRA-HEAT-DUO - 2/5 - Light
Membrane Approved for Sound Reduction
NO
DITRA-HEAT - NO
DITRA-HEAT-DUO - YES
NO
Is the Membrane a Thermal Break?
NO
DITRA-HEAT - NO
DITRA-HEAT-DUO - YES, floor warmed 80% faster
NO
Cable Warranted in Other Membranes
YES
NO
YES
Membrane Warranted with Other Cable
YES
NO
YES, 5 years
Warranty in Effect After Repairs
YES
NO
YES, must get authorization first
Cable Warranty
Membrane Warranty