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- During cold weather the application of extra mastic must be added in the same manner;
- Apply only a thin, linear, uniform layer of asphalt mastic less than 3 mm thick and 25 mm up from the bottom of the shingle;
- Excess amounts can cause blistering and sticking of the shingles!
- Remember: application on vertical walls and façades is always better during warm weather when self-adhesive bitumen glue is more effective!
- There might be an unvented space behind a mansard roof or vertical wall. It is important to provide a properly ventilated flow-through air space behind the roof sheathing to prevent the entrapment of moisture-laden air;
- Therefore, air must be able to circulate freely between the insulation and the nailable roof deck
- Proper ventilation is crucial to extend the life of the shingle roof;
- For steep slopes and façades it’s ideal to create the required ventilation with IKO Armourvent Multi;
- Most major building regulations require a minimum ventilation ratio of 1 m² net ventilating area per 300 m² of attic floor space (1:300). For steep slopes and façades 1 m² net ventilating area per 600 m² (1:600) is enough. It is always divided evenly between the eaves and the top of vertical wall;
- Remember: the air gap between the insulation and the roof deck must be 4 to 6 cm;
Following these instructions will assist you or your roofer in installing the shingles correctly.
Safety first: working on steep slopes can be dangerous, so be sure to always use a safety rope and harness where needed.
Remember : Shingles should seal to the underlying course when the factory applied asphalt sealant is sufficiently warmed by the heat of direct sunlight. When application conditions might limit the effectiveness of the adhesive strip, such as cool weather or in areas subject to high winds or blowing dust, shingle adherence should be ensured through manual sealing by Shingle Stick or Plastal Stick.
These pictures are a few examples of what can go wrong when you don’t follow the recommended application method.
Failure of buckled shingles on façade because of movement of the wooden boards!
Visible movement of wooden boards and gaps between!
Vertical wall application without extra bitumen glue can cause peel off shingles especially with lack of ventilation and movement of the wooden deck!
Failure of buckled shingles on façade because of movement of the wooden boards!
Visible movement of wooden boards and gaps between!
Vertical wall application without extra bitumen glue can cause peel off shingles especially with lack of ventilation and movement of the wooden deck!
So be sure to follow the recommended application method, in order to create an impressive end result on your roof and wall. Good luck!
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Order your A4/A5 sample here!
