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During fastening of the wooden roof constructions, the roof rafter spacing depends on temporary and constant roof loads an on form of roof. It ranges from 600 mm up to 1500 mm. Depending on the roof rafter spacing, different preparatory layers of different thicknesses and materials are used. Please check your local building codes or static calculations. The following table is only a guideline.

• Properly ventilate the attic. This eliminates the amount of moisture absorption by deck panels and thereby reduces the amount of swelling and shrinking of the wood. This wood movement often causes the the buckling problems with shingles.
• Leave the roof sheathing panels (plywood, OSB) to acclimate to local humidity levels before installation. This reduces swelling after the panels are installed and avoid buckling problems with shingles.
• Space deck panels 3 mm apart on all sides when fastening them to the roof framing.
• Immediately cover the roof panels with an underlayment after installation in order to keep the wood dry.

• Cementitious wood fiber
• Gypsum plank
• Lightweight concrete
• Insulation boards

These materials are not acceptable as a roof deck for direct application of IKO shingles. These products are not likely to provide a proper surface for nails to hold the bitumen shingles. Direct shingle application can lead to over-driven or under-driven nails. Over-driven fasteners can damage the shingle, increasing the chance of wind blow-off and leakage due to wind driven-rain or ice-dam backup.

The heads of under-driven nails, or of those that back out, may prevent shingles from sealing, reduce the wind blow-off resistance, and puncture the shingle tabs above, leading to leaks.

These roof surfaces must be covered with an acceptable decking material, with ventilation as required, prior to the application of IKO shingles.

Summer is the ideal time to install a new shingles roof! Asphalt roof shingles have been used successfully in various climatic zones around the world for many decades, including desert and tropical regions. In the last few years, Europe is also dealing with tropical and hot weather during the summer. In order to guarantee you improved application efficiency and, more importantly, an enhanced long-term shingle performance, we list some hot weather application recommendations:

1. Storage of roof shingles
2. Proper footwear
3. Planning the roof installation
4. Avoid footprints and scuffing from work
5. Sponges to avoid sliding/burning
6. Protect yourself
7. Cool the shingle surface
8. Wind-seal dots side up

Let’s take a look at the first 4 tips!