Alldry Wall n Roof 12
A one-pack, self-priming elastomeric coating for terraces, parapets and exterior walls. It stretches over cracks and also helps cool the roof.
Best for: Terrace and roof waterproofing, Parapets, sunshades and balconies, Exterior walls needing waterproofing
At a glance
- Coverage
- Exterior walls (fresh) 25 sq.ft per litre for 2 coats; repaint 30 sq.ft per litre for 2 coats; horizontal surfaces 10 sq.ft per litre for 3 coats; parapets 30-35 sq.ft per litre for 2 coats
- Coats
- Walls 2; terrace and horizontal 3
- Touch dry
- 4-6 hours
- Recoat after
- 4-6 hours
- Thinning / mixing
- 35% with potable water
- Apply with
- Brush or roller
- Pack sizes
- 4 L, 20 L (information sheet); product page lists 1 L, 4 L, 10 L, 20 L
- Shades
- White
- Warranty
- 12 years against water ingress through terrace; up to 14 years on exterior walls (depends on topcoat)
- Shelf life
- 36 months
- Curing
- Air cure 7 days, then ponding test
- Good to know
- Elongation up to 300%. Apply between 10 and 45 degrees C; not if rain is due within 48 hours. Foot traffic only.
How much will I need?
A rough estimate from the coverage on the data sheet. Real coverage depends on the wall.
Enter the wall area or room size.
Why choose it
- Resists water pressure up to 12 bar
- Bridges cracks up to 3 mm; stretches up to 300%
- Cuts surface temperature by up to 12 degrees C
- Reflective white finish (SRI above 100)
- Acrylic and PU hybrid polymers
How to use it
Make sure plaster has cured 28 days. Scrub off algae and plants, then jet-wash. Repair spalls and fill cracks. Apply on a surface that is saturated dry (SSD). Add extra coats at corners, joints and outlets.
Recommended system
- Self-priming, no separate primer needed
- Alldry Repair Master (defects over 5 mm)
- Alldry Crack Master Paste (cracks up to 5 mm)
- 45 gsm glass fibre mesh between coat 1 and 2 in high-movement areas
Source These details are taken from Birla Opus's official website and technical data sheet, and written in simple words by APS. Brands update their products from time to time, so please check the pack and the latest data sheet before use. See the official page
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