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The big advantage of a bituminous underlayment is that every penetration by a nail is waterproofed. A bituminous underlayment is mostly used over wooden decks, especially under shingles or sometimes even under metal roofing as a safety hydro-insulation. We know many types of these underlays:
- reinforced with fibers or polyester
- finished with the sand or polypropylene
- self-adhesive or non-self-adhesive
IKO has a well-known range of products called Armourbase underlayments. All the IKO Armourbase underlayments are on a bituminous base, reinforced with polyester and finished with a polypropylene fabric. They are very light but at the same time also very strong and durable. The average weight of these rolls (30 m²) is only 9 kg, so the handling on a roof is very comfortable. The tear resistance of Armourbase underlayments is enormous, which means a roofer can feel safe, even on steeper slopes. The polypropylene fabric prevents slippery conditions and holds a firm contact with the wooden deck.
IKO has four types of underlayment in its range:
- Armourbase ECO
- Armourbase PRO
- Armourbase PRO PLUS
- Armourbase STICK
IKO Armourbase underlayment range
Armourbase ECO is an economic version of underlayment. One roll is 50 m². The polyester inlay is saturated with modified bitumen. The polypropylene finishing is black with a white IKO logo. This underlayment is suitable for bigger projects, with standard slopes where the investor wants to reduce some costs, without having to worry about quality loss.
Armourbase PRO is the IKO flagship and is the most sellable underlayment. One roll contains 30 m². The Underlayment has a strong polyester inlay saturated with modified bitumen and the polypropylene fabric is green with a black IKO logo. Armourbase PRO is recommended for any residential project where the quality comes first.
Armourbase PRO PLUS is another modern underlayment with self-adhesive bituminous strips for the adhesion of the overlapping. One roll is 30m². The finishing polypropylene is a grey-purple color with horizontal and vertical lines (grid) and with a black IKO logo. These lines are very useful for a better alignment of the shingles. Because of the self-adhesive horizontal strips, the underlayment is recommended for roof projects with slopes less than 20 degrees.
