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WR Meadows HYDRALASTIC 836 5 Gallon Pail
WR Meadows HYDRALASTIC 836 is a cold-applied, solvent-free, single-component waterproofing compound, supplied in a 5 gallon pail. It is intended for positive-side waterproofing of exterior concrete, above or below grade, on plaza decks, planters, parapets, foundations and split slabs.
- No mixing required; can go on green concrete
- About 130 sq ft per 5 gallon pail at 60 mils dry
- VOC 36 g/L; meets EPA, CARB, LADCO, OTC Phase I and II and SCAQMD VOC limits
$342.18
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WR Meadows HYDRALASTIC 836 5 Gallon Pail
WR Meadows HYDRALASTIC 836 (often searched as hydralastic 836) is a cold-applied, solvent-free, single-component waterproofing compound that does not shrink, has a low VOC content and a very low odor. It is intended for exterior concrete surfaces where protection from water intrusion is needed, above and below grade, horizontal and vertical: plaza decks, planter boxes, parapets, positive-side foundation waterproofing and split-slab work. It goes on by trowel, squeegee or roller, skins over in 30 minutes at 75 F (23 C) and cures to a tough, flexible membrane. It is not intended for negative-side waterproofing, as a liner in a water-containing structure, or as an exposed or wearing surface, and it must be covered with a protection course.
Key Features
- Single component, no mixing required
- Solvent-free; VOC 36 g/L
- Skins over in 30 minutes at 75 F (23 C); will not slump
- Can go on green concrete and will not harm EPS or rigid foam insulation
- Does not freeze and is not damaged by freezing weather
Applications
- Plaza decks and podiums (120 mils with REINFORCING FABRIC HCR)
- Planter boxes and parapets
- Positive-side foundation waterproofing
- Split-slab (between-slab) waterproofing
Technical Specifications
| Property | Value |
|---|---|
| Type | Cold-applied, solvent-free, single-component waterproofing compound |
| Standard | ASTM C836 |
| VOC content (ASTM D2369) | 36 g/L |
| VOC compliance | National EPA VOC Emission Standard for Architectural Coatings, CARB, LADCO, OTC Phase I and II, SCAQMD |
| Coverage per gallon | 26 sq ft at 60 mils dry; 17.5 sq ft at 90 mils dry; 13 sq ft at 120 mils dry |
| Coverage per 5 gallon pail | About 130 sq ft at 60 mils; about 87.5 sq ft at 90 mils; about 65 sq ft at 120 mils (dry) |
| Solids by weight (ASTM C1250) | 98% |
| Tensile strength (ASTM D412) | 100 psi |
| Elongation at break (ASTM D412) | 425% |
| Permeability (ASTM E96 BW) | 0.1 perm in. |
| Shore 00 hardness (ASTM D2240) | 57 |
| Service temperature | -40 to 200 F |
| Minimum application temperature | Above 20 F (-7 C) and rising |
| Work life | One hour at 75 F (23 C) |
| Tack-free time | Usually four hours |
| Substrates | Concrete, metal and wood |
| Shelf life | Six months from manufacture, unopened, stored indoors at 40-70 F (4-21 C) |
| Pack | 5 Gallon Pail |
| Part number | 6506005 |
Product documents: WR Meadows HYDRALASTIC 836 Data Sheet (PDF)
Frequently Asked Questions
How much area does a 5 gallon pail of WR Meadows HYDRALASTIC 836 cover?
Per gallon, the data sheet gives 26 sq ft at 60 mils dry, 17.5 sq ft at 90 mils and 13 sq ft at 120 mils. A 5 gallon pail covers about 130 sq ft at 60 mils, about 87.5 sq ft at 90 mils or about 65 sq ft at 120 mils.
How thick should HYDRALASTIC 836 go on?
A single 60 mil coat is used for typical work such as foundation walls and planters. For critical horizontal work such as plaza decks and podiums, the data sheet recommends a 120 mil layer embedded with REINFORCING FABRIC HCR, following the WR Meadows HIGH BUILD REINFORCED SYSTEM technical bulletin.
Does the surface need a primer?
Priming is recommended on porous substrates where air or moisture release could cause pinholes or blisters. Use REZI-WELD LV or REZI-WELD LV STATE; on vertical surfaces only, REZI-WELD 1000 is recommended. Do not use asphalt-based primers.
How should the surface be prepared?
It is intended for concrete, metal and wood. The substrate must be structurally sound, surface dry, dust-free and free of frost, grease, oil, curing compounds and release agents. Lightly roughen or grind smooth concrete, clean with denatured alcohol, and do not use petroleum solvents such as mineral spirits or xylene. Fill bug holes and tie holes with MEADOW-PATCH 5 or MEADOW-PATCH 20.
How long do I have to work it, and when can I recoat?
Work life is one hour at 75 F (23 C) and it skins over in 30 minutes. Put on a second coat as soon as possible, no more than eight hours apart at 75 F. For next-day or second-coat work, wipe a 6-8 Inch tie-in area with acetone or alcohol to remove the oily film that can form. Tack-free time is usually four hours.
What are the limitations?
Do not leave it exposed to exterior UV for more than 14 days, and cover it with MEL-DRAIN (polyester backing film type) or PC2R PROTECTION COURSE once it can be walked on. It is not for use as a liner in a water-containing structure, as an exposed or wearing surface, on surfaces to be painted, or for negative-side waterproofing. Minimum application temperature is above 20 F (-7 C) and rising, and shelf life is six months.
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