Coverage table for CreteSafe B-250™, SealRoof B-200™ and MetalSafe B-300™.
Before a spray application of the CreteSafe B-250™ membrane ensure the concrete surface is dry and free of any dirt or loose materials. Voids and joints larger with a width of 1/8" or more should be sealed using a brush coat of TrowelGrade B-400™ over geo textile. All penetrations, right angles and corners need to be coated with TrowelGrade B-400™ prior to spraying with CreteSafe B-250™.
| Required thickness (cured membrane) |
Coverage | |||
|---|---|---|---|---|
| Mils | Mm | ft2/gal | m2/gal | m2/litre |
| 40 | 1,02 | 30 | 2,79 | 0,74 |
| 60 | 1,53 | 20 | 1,86 | 0,49 |
| 80 | 2,04 | 15 | 1,39 | 0,37 |
| 100 | 2,55 | 12 | 1,11 | 0,29 |
| 120 | 3,06 | 10 | 0,92 | 0,24 |
| 140 | 3,55 | 8,5 | 0,78 | 0,21 |
| 160 | 4,08 | 7,5 | 0,69 | 0,18 |
| 180 | 4,59 | 6,6 | 0,61 | 0,16 |
| 200 | 5,10 | 6,0 | 0,55 | 0,15 |
Roof surfaces should be clean and dry. If ponding water is found, remove water and allow the area to dry 48 hours prior to application of SealRoof B-200™. Surfaces should be free of any loose materials, all cracks should be sealed with HighBuild S-200™ over geo textile prior to a spray application of SealRoof B-200™.
For repair and restoration of BUR roofing ensure that all roofing granuals have been removed and the surface power swept. Check and repair flashings, curbs, parapets, drains, roof edges and roof penetrations prior to applying SealRoof B-200™. Do not apply SealRoof B-200™ over existing EPDM or coal tar surfaced roofs. On roof waterproof restoration projects it is recommended that a thermal scan be conducted to identify hidden moisture that can degrade the new membrane.
On new roof surfaces ensure that all construction materials and scrap have been removed and the surface is clean. Seal all joints with a coating of HighBuild S-200™ over geo textile, prior to the spray applied SealRoof B-200™ membrane.
For best results always keep the nozzle tips at right angles to the surface being sprayed. If there is a breeze, ensure that the part ‘B’ or accelerator side of the spray gun is facing the wind.
On vertical surfaces, start at the bottom and work up.