Product Data, W. R. MEADOWS
07 10 00
No. 719 Click for .PDF
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MEL-DRAIN™

ROLLED MATRIX DRAINAGE SYSTEM

DESCRIPTION
MEL-DRAIN is a dimple-raised, molded polystyrene sheet bonded to high strength polypropylene fabric. This geocomposite allows the passage of moisture through the fabric while preventing fine soils from entering the drainage channel. Various drain designs are available, depending on soil pressure and flow specifications. (An optional polyester backing film is available when used in conjunction with flexible waterproofing material.) The family of MEL-DRAIN products provides excellent protection in vertical, horizontal, and site applications.

USES
Used in conjunction with a total W. R. MEADOWS moisture protection system, MEL-DRAIN is the ideal choice for enhanced waterproofing protection of basement walls, plaza decks, earth-sheltered homes, commercial buildings, retaining walls, underground parking, site drainage, etc.

FEATURES/BENEFITS
  • High flow capacity, without clogging/Relieves hydrostatic pressure buildup.
  • High compressive strength/Dependable, long life performance.
  • Easy to install; durable under jobsite conditions/Lower total installed cost.
  • Chemically resistant to all naturally occurring soil conditions/Wide variety of applications.
  • Provides added protection for waterproofing materials/Enhances waterproofing performance.
  • Part of a complete W. R. MEADOWS moisture protection system/Worry-free, single-source solution.

INSTALLATION

For vertical, below-grade applications, unroll MEL-DRAIN with flat, core side against the wall or waterproofing material. W. R. MEADOWS POINTING MASTIC or MEL-PRIME™ primer are excellent adhesives compatible with this installation. The flat side core lip is overlapped to provide a continuous drainage layer. Extra filter fabric is provided at the edges for overlapping with the next sheet. MEL-DRAIN is easily cut with construction knives or scissors.

For horizontal applications, unroll and overlap so that water runs with overlap. Add appropriate ballast as needed to hold down drainage board.

 Mel-Drain cross section

TECHNICAL DATA
PHYSICAL
PROPERTIES		 5012 5012-B 5035 5035-B 7055 7555 7572 9055 TEST
METHOD (ASTM)

Fabric
Weight, oz./yd²

Grab tensile, lbs.
Mullenburst, PSI
EOS (AOS)

Flow rate, gpm/ft²

4 (n/w)

110
215
100

150

4 (n/w)

110
215
100

150

4 (n/w)

110
215
100

150

4 (n/w)

110
215
100

150

6 (n/w)

165
310
80

120

6 (mono)

465 x 290
560
70

28

6 (mono)

465 x 290
560
70

28

8 (n/w)

230
695
100

80

D 3776

D 4632
D 3786
D 4751

D 4491

Core
Compressive
strength, Ib/ft²

Flow capacity,
gpm/ft of width 



10,800


9



10,800


9



15,000


16



15,000


16



21,000


16



21,000


18



30,000


9



18,000


16



D 1621 (mod)


D 4716
Drain Board
Thickness, inch
Roll weight, lb.
Roll length, ft.
Roll width, inch
Backing film


1/4
30
50
48
No


1/4
32
50
48
Yes


7/16
40
50
48
No


7/16
45
50
48
Yes


7/16
40
50
48
No


7/16
48
50
48
No


1/4
42
50
48
No


7/16
52
50
48
No


D 1777

Material last updated May 2008.

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