Sikalastic RoofPro is a fully-reinforced, cold liquid-applied membrane family of single-component moisture-triggered aliphatic polyurethane resins (with Reemat fiberglass or Sika Fleece polyester reinforcement), plus Sikalastic-500 silicone for coating-only restorations. RoofPro system tiers (Metal/10/15/20/25) correspond to warranty terms, with total dry film from 32 to 84 mils.
Coating products & published specs.
Sikalastic 601 BC (US)
Polyurethane
- CoverageRoofPro 10: 35 wet mils at 45 sf/gal
- Solids78.0% by volume / 84.3% by weight
- Film build35-45 wet mils per base layer
- WarrantyRoofPro 10/15/20/25-year reinforced system tiers
Full specs & data sheet
Application
Coverage: RoofPro 10: 35 wet mils at 45 sf/gal; RoofPro 15/20/25: 45 wet mils at 35 sf/gal (base/embedment layer)
Film build: 35-45 wet mils per base layer; total RoofPro system dry film 52-84 mils
Physical properties
Solids: 78.0% by volume / 84.3% by weight
- System breaking strength psi 1030 (RoofPro 20 w/ Reemat Premium, ASTM D751)
- 900 w/ Sika Fleece 140
- System elongation % 21 (Reemat) / 82 (Fleece 140)
- Tear strength lbf in 300 (Reemat) / 200 (Fleece)
- Voc 212 g/L
- Color Oxide red
- Packaging 5-gal pails
Warranty
RoofPro 10/15/20/25-year reinforced system tiers
Sikalastic 621 TC (US)
Polyurethane
- Coverage20 wet mils at 80 sf/gal (RoofPro Metal) to 45 wet mils at 35 sf/gal (RoofPro 20/25)
- Solids81.3% by volume / 87.4% by weight
- Film build20-45 wet mils per layer (Reemat systems)
- WarrantyRoofPro Metal / 10 / 15 / 20 / 25-year system tiers
Full specs & data sheet
Application
Coverage: 20 wet mils at 80 sf/gal (RoofPro Metal) to 45 wet mils at 35 sf/gal (RoofPro 20/25); with Sika Fleece 70-100 wet mils at 23-16 sf/gal
Film build: 20-45 wet mils per layer (Reemat systems); 70-100 wet mils wet-on-wet (Fleece systems); total system 32-84 dry mils
Physical properties
Solids: 81.3% by volume / 87.4% by weight
- Solar reflectance initial 0.88 (white RAL 9016, ASTM C1549)
- Sri initial 110
- Voc 183 g/L
- Approvals FM 4470 Class 1, Miami-Dade NOA, Energy Star (white), ASTM D7311 compliant
- Colors White, Pearl Gray, Steel Gray, Mushroom, Copper Green
Warranty
RoofPro Metal / 10 / 15 / 20 / 25-year system tiers
Sikalastic-641 Lo-VOC
Polyurethane
- CoverageWith Sika Reemat Premium: 32-80 sf/gal depending on 20-50 wet mil spec
- Solids89% by volume (ASTM D2697)
- Film buildSystem dry film 62 mils (10/15-yr) to 89 mils (25-yr Fleece)
- WarrantyRoofPro reinforced system warranties (10-25 year tiers)
Full specs & data sheet
Application
Coverage: With Sika Reemat Premium: 32-80 sf/gal depending on 20-50 wet mil spec; with Sika Fleece: 24-64 sf/gal at 25-66 wet mils
Film build: System dry film 62 mils (10/15-yr) to 89 mils (25-yr Fleece); metal systems 36 mils dry minimum
Physical properties
Solids: 89% by volume (ASTM D2697)
- System tensile psi 1030 (w/ Reemat Premium) / 900 (w/ Fleece 140)
- Low-VOC, low-odor version for occupied buildings and VOC-regulated regions
Warranty
RoofPro reinforced system warranties (10-25 year tiers); sample warranties published by Sika
Sikalastic-500
Silicone
- CoverageRoofCoat 10: 1.5 gal/100 sq ft
- Solids92-96% by volume and by mass (ASTM D2697)
- Film build24 wet / 23 dry mils (10-yr)
- WarrantySika RoofCoat 10/15/20-year coating system tiers
Full specs & data sheet
Application
Coverage: RoofCoat 10: 1.5 gal/100 sq ft; RoofCoat 15: 2.0 gal/100 sq ft; RoofCoat 20: 2.5 gal/100 sq ft
Film build: 24 wet / 23 dry mils (10-yr); 32 wet / 31 dry (15-yr); 40 wet / 38 dry (20-yr)
Physical properties
Solids: 92-96% by volume and by mass (ASTM D2697)
- Tensile psi 300 (ASTM D2370)
- Tear strength 45 lb/in (ASTM D624)
- Shore a hardness 50 +/- 5
- Solar reflectance 0.88 initial (ASTM C1549)
- emittance 0.91
- SRI 112
- Voc 35.4 g/L
Warranty
Sika RoofCoat 10/15/20-year coating system tiers
Specs from published manufacturer data sheets — researched August 2026. Always confirm current specifications and pricing with the manufacturer or your distributor.
Application rates by warranty term and substrate.
Sikalastic-500 (RoofCoat)
Silicone94% volume solids
| Substrate | Warranty term | Total rate | Coats | Dry film | Primer | Source / notes |
|---|---|---|---|---|---|---|
| All approved substrates | RoofCoat 10-year | 1.5 gal/sq | 1 | 23 mils (24 wet) | — | |
| RoofCoat 15-year | 2 gal/sq | 1 | 31 mils (32 wet) | — | ||
| RoofCoat 20-year | 2.5 gal/sq | 1 | 38 mils (40 wet) | — |
Rates transcribed from the manufacturer’s published quick specs and data sheets — September 28, 2026. Premium members load any term straight into the material calculator. Always confirm current specifications with the manufacturer.
Where to buy Sika coatings.
Sikalastic roofing liquids are sold through Sika's reps and installed by approved applicators for the 20-year warranty; not a retail or shelf-stocked distributor brand.
Sika contractors by state.
Find your Sika rep.
- ME, NH, VT, MA, CT, RI, NY, NJ, PA, DE, MD, WV, Northern VA, DC — Brian Weissberg, Regional Sales Manager – Eastern — 917-885-5567 — weissberg.brian@us.sika.com
- VA (except DC), NC, SC, TN, MS, GA, AL, FL, Puerto Rico, Bermuda, Bahamas, Virgin Islands — Chris Whitehouse, Regional Sales Manager – Southeast — 909-746-3576 — whitehouse.chris@us.sika.com
- MN, ND, SD, WI, IL, MI, IN, OH, KY, NE, OK, TX, IA, KS, MO, AR, LA — Bill Schaefer, Regional Sales Manager – Central — 312-720-4792 — schaefer.bill@us.sika.com
- NM, CO, UT, WY, MT, ID — Eric Karman, Regional Sales Manager – Mountain — 714-878-3692 — karman.eric@us.sika.com
- CA, OR, WA, NV, AZ, AK, HI — Rob Erklin, Regional Sales Manager – Western — 312-720-5597 — erklin.rob@us.sika.com
✓ From Sika’s published roster · verified August 2026
Is this your brand?
Claim this profile to manage your products, feature your certified contractors, and reach building owners comparing systems right now.