About the S.B.S Flat Top Roofing System
A Torch Down Modified Bitumen roof; or as it is commonly known a 2-ply SBS roof system (consisting of a T.P. 180 base sheet and T.P. 250 cap sheet), is a very popular roofing system in the market today. Consisting of polyester or fiberglass reinforcing mat sandwiched between two layers of rubberized asphalt, the two-ply roof system is quite durable. There are several ways of connecting pieces of this material. In a heat application process the seams are heated (torched) to melt the asphalt together and create a seal.
We use IKO's two-ply modified bitumen roof membranes. Building owners have relied on IKO to fulfill their most demanding roofing requirements since 1951. Today, IKO continues to provide the most durable two-ply modified bitumen roofing system on the market. Backed by a full range of warranties and proven performance history, building owners can be confident in IKO's commitment to quality manufacturing. We are IKO certified installers.
IKO's two-ply modified bitumen roof membranes provide:
- Proven long-term durability
- High tolerance for building stress
- Outstanding strength and toughness
- Exceptional puncture resistance
- Good resistance to thermal shock
- Generally superior fire resistance (Class C - A, using IKO prevENt™)
- Lower maintenance and inspection costs on average
Compare the Facts...
| IKO | Duro-Last | A | B | |
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| Membrane Type | S.B.S | PVC | TPO | EPDM |
| Custom Prefabricated Deck Sheets? | No, all seams are handmade on site | Yes, eliminates 80-85% of field seams. | No, all seams are handmade on site | No, all seams are handmade on site |
| Sheet Construction | Roll goods only - 100 sq ft coverage per typical roll | Factory pre-fabricated into panels up to 2,500 sq ft | Roll goods only - 500-1,000 sq ft coverage per typical roll | Roll goods only - 1,000 sq ft per coverage per typical roll |
| Custom Prefabricated Curb & Stack Flashings |  |
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| Custom Prefabricated Scuppers & Parapets? | |
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| All Flashing material reinforced | |
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| Flashing Method | Torch applied | All Heat Welded | Adhesive or heat welded | Glued, with the seams taped to finish the seal. |
| Warranty Coverage | Repair only | Repair and replacement | Repair only | Repair only |
| Warranty Issued at No Additional Cost? | |
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| Warranty Coverage for Consequential Damages? | |
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